B roads in Zone 4 of the Great Britain numbering scheme

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B roads are numbered routes in Great Britain of lesser importance than A roads. See the article Great Britain road numbering scheme for the rationale behind the numbers allocated.

The numbering zones for roads in Great Britain

3 digits[edit]

Road From To Notes
B400 A4 Fleet Street A40 Holborn Chancery Lane. One way only Northbound
B401 A40 High Holborn B402 Long Acre Endell Street. One way only Southbound. Formerly included Bow Street and Wellington Street further south.
B402 A400 Charing Cross Road A4200 Kingsway Road Names: Cranbourn Street, Long Acre, Great Queen Street. One-way westbound along Cranbourn Street; one-way eastbound along Long Acre.
B404 A401 Shaftesbury Avenue A400 Charing Cross Road Road Names: Monmouth Street, Upper St Martin's Lane, St Martin's Lane. One-way southbound. Crosses Seven Dials and south end is near St Martin-in-the-Fields, the National Gallery and Trafalgar Square.
B405 A4204 Palace Gardens Terrace, near Notting Hill Gate A4204 Kensington Church Street Road Names: Palace Gardens Terrace, Vicarage Gate.
B406 A5204 Wigmore Street, Marylebone A4201 Regent Street, Mayfair Road Names: Welbeck Street, Henrietta Place, Vere Street, New Bond Street, Conduit Street. One-way southbound except along Conduit Street.
B408 A315 King Street, Hammersmith A4020 Shepherd's Bush Road Names: Dalling Road, Paddenswick Road, Askew Road. South part of Dalling Road is one-way southbound.
B409 A402 Goldhawk Road, Stamford Brook B490 at Acton Green Road Names: Stamford Brook Road, Bath Road, South Parade
B410 A402 Bayswater Road A4205 Praed Street at Paddington station Road Names: Leinster Terrace, Craven Hill, Craven Road
B411 A402 Bayswater Road A404 Harrow Road Road names: Queensway, Porchester Road, Lord Hills Bridge. Also includes Inverness Place and Inverness Terrace, for one-way southbound traffic (south part of Queensway is one-way northbound).
B412 A219 Shepherds Bush A4207 Notting Hill To the West of Ladbroke Grove it follows North Pole Road, St Quentin Avenue, St Marks Road and Cambridge Gardens.

To the East, though Westbourne Park Road. Crosses Portobello Road.

B413 A5 Maida Vale B450 Chamberlayne Road In two parts: Maida Vale to Kilburn Park Road, and Kilburn Park Road to Kensal Green. Via Warwick Avenue Underground station. Road Names: Clifton Road, Clifton Gardens, Warwick Avenue, Formosa Street, Shirland Road, Carlton Vale, Kilburn Lane
B414 A5 Maida Vale A404 Harrow Road at Westbourne Green Road Names: Kilburn Park Road, Walterton Road, Fernhead Road
B415 A4206 Pembridge Road, near Notting Hill Gate B450 Ladbroke Grove Road Names: Kensington Park Road, Elgin Crescent
B416 A4 Wellington Street / A332 roundabout at Slough A413 Amersham Road at Gerrards Cross
B425 A45 in Sheldon, West Midlands A41 in Solihull
B430 A34 at Weston-on-the-Green M40 at Ardley
B439 A46 at Salford Priors A4390 at Stratford-upon-Avon Formerly the A439
B450 A402 at Holland Park B451 at Kensal Rise Much of this is Ladbroke Grove in Notting Hill and passes close to Portobello Road market.
B451 A404 at Kensal Green A5 at Kilburn Via Kensal Green railway station. Road Names: College Road, Mortimer Road, Harvist Road, Brondesbury Road
B452 A3002 at Brentford A40 at Perivale Via Brentford railway station, Northfields Underground station and West Ealing railway station. Road Names: Windmill Road, Northfield Avenue, Drayton Green Road, Argyle Road, Teignmouth Gardens
B454 A315 at Isleworth A4127 at Southall Via Syon Lane railway station, and crosses Osterley Park. Road Names: Spur Road, Syon Lane, Windmill Lane.
B455 A315 at Brentford A312/A4180 roundabout at Yeading Via South Ealing Underground station and Ealing Broadway railway station. Road Names: Ealing Road, South Ealing Road, Saint Mary's Road, Ealing Green, Bond Street, Ealing High Street, Ealing Broadway, Haven Green, Castlebar Road, Castlebar Hill, Kent Gardens, Scotch Common, Ruislip Road East, Greenford Broadway, Ruislip Road. Haven Green, Ealing Broadway and Ealing High Street are one-way southbound; Bond Street is one-way northbound.
B456 A40 Western Avenue A4005 at Alperton Road Name: Alperton Lane
B457 A4005 at Roxeth A409 at Harrow Via Harrow School and Harrow-on-the-Hill station. Road Names: London Road, Harrow High Street, Peterborough Road, Station Road
B461 A4140 at Stanmore A5 at Edgware Whitchurch Lane, past Canons Park station
B462 A411 at Bushey Arches A5183 at Radlett
B463 Defunct Was given to Paines Lane and Pinner High Street. Declassified in the 1980s after the rerouting of the A404 north of Pinner.
B465 A4020 at Hillingdon A408 at Stockley Park Road Name: West Drayton Road
B466 A4020 at Hillingdon A404 at Pinner Via West Ruislip railway station. Road Names: Long Lane, Ickenham High Road, Ickenham Road, Eastcote Road, Eastcote High Road, Cuckoo Hill
B467 A4020 at Uxbridge B466 at Ickenham Road Names: Harefield Road, Swakeleys Road
B469 A404 at Northwood A4215 at Northwood Via Northwood Underground station. Road Name: Green Lane
B470 A408 at Cowley A4 at Windsor Via Langley railway station.
B471 Pangbourne, Berkshire A4074 at Woodcote, Oxfordshire
B472 A404 at Northwood Hills B466 at Eastcote Via Northwood Hills Underground station. Road Name: Joel Street
B473 A407 at Willesden A4088 at Neasden Via Neasden Underground station. Road Name: Neasden Lane
B474 A40 at Beaconsfield A404 at Hazlemere
B480 A4130 Fair Mile, Henley-on-Thames Iffley
B481 A4155 Caversham B480 just south of Watlington Connects Reading to B4009 at Watlington and hence the M40 2.5miles north of Watlington
B482 A4155 Marlow A40 Stokenchurch By way of Lane End, Bolter End and Cadmore End
B483 A4020 at Uxbridge A40 at Ickenham Road Name: Park Road
B485 A416 at Chesham A413 at Great Missenden
B488 Aston Clinton, Tring A4146 south of Leighton Buzzard, Begins at a grade separated junction east of Aston Clinton.
B489 B4009 at Aston Clinton A5/A505 at Dunstable Formerly started on the A41, now crosses the bypassed A41 and starts in Aston Clinton on the B4009.
B490 A315 at Chiswick A4020 at Acton Via Chiswick Park Underground station. Road Names: Acton Lane, Beaconsfield Road, Acton Lane, Winchester Street
B491 A315 at Chiswick B490 near Acton Via Turnham Green Underground station. Road Names: Turnham Green Terrace, The Avenue, Southfield Road

4 digits (40xx)[edit]

Road From To Notes
B4000 A4/A34 at Speen, Berkshire A361 at Highworth, Wiltshire via Lambourn, Ashbury and Shrivenham
B4001 A4 at Hungerford, Berkshire A417 north of West Challow via Lambourn
B4004 Defunct The former classification of Ringland Way in Newport. Subsequently reclassified A455, and then A48 as part of the Southern Distributor Road.
B4005 M4 Motorway junction 16 at Swindon and Wooton Bassett A346 road east of Chiseldon via Wroughton
B4008 Stroud Quedgeley Formerly part of the A419.
B4009 A4 / A339 at Newbury A4074 south of Wallingford Part One of B4009 route, follows route of the ancient Roman road Icknield Way. Links Oxfordshire with the western M4, crosses the River Thames at Goring-on-Thames and Streatley.
B4009 A4074 at Benson A41 at Tring, Hertfordshire Part Two of B4009 route; follows route of the ancient pre-Roman Icknield Way via Watlington, Chinnor and Wendover; links Oxfordshire, Buckinghamshire, Bedfordshire and Hertfordshire.
B4011 A418 at Thame A41 near Bicester via Long Crendon. Turnpiked in 1833.
B4014 A429 north of Malmesbury A46 at Nailsworth via Tetbury and Avening. Formerly part of A434.
B4015 A415 Clifton Hampden B480 Chiselhampton
B4016 B4017 Drayton A417 Blewbury via Sutton Courtenay, Appleford-on-Thames and East Hagbourne
B4017 B4044 Farmoor A4130 Milton Hill via Cumnor, Abingdon and Drayton. The section of road between Abingdon and Milton Hill was formerly part of the A34.
B4019 Faringdon, Oxfordshire A419 at Broad Blunsdon, Wiltshire via Highworth
B4022 A40 at Cogges, Oxfordshire A361 near Great Tew via Witney, Charlbury and Enstone. The former route of the A40 between Cogges and Witney
B4025 A34 in Hall Green, Birmingham A41 at Solihull
B4027 A40 at Wheatley A44 at Glympton by way of Beckley. Number formerly duplicated - road in Warwickshire once so numbered is now B4428
B4030 A44 near Enstone B4100 at Bicester Town Centre via Church Enstone, Gagingwell, Westcott Barton, Middle Barton, Bartongate, Hopcroft's Holt, Lower Heyford and Middleton Stoney. Turnpiked in 1797 and disturnpiked in 1876.
B4031 A361 near Great Tew A43 near Croughton, Northamptonshire via Deddington
B4032 A413 near Winslow A4146 at Linslade
B4033 A413 near Winslow, Buckinghamshire A421 near Nash, Buckinghamshire
B4034 A421 in south western Milton Keynes A422 in northern Milton Keynes For much of route is more commonly referred to as the V8 Marlborough Street
Multimap incorrectly assigns this number to the B4304 in Llanelli
B4035 Banbury A4184 in Evesham via Broughton, Tadmarton, Swalcliffe, Brailes, Shipston-on-Stour, Chipping Campden, Bretforton and Badsey
B4036 Daventry A5 at Long Buckby Wharf Formerly continued to Market Harborough via Naseby, site of the English Civil War battle of that name, and ran close to a junction with the A14 and M1 junction 18
B4037 A361 at Badby A45 near Dodford Road is about 3 miles (5 km). Goes via Newnham.
B4038 A361/A5 at Kilsby A428 at Hillmorton Road can be accessed from the A5 or A361. Road was formerly much longer as it is what is now part of the A361 between Daventry and Kilsby. Today the road is only about 3 miles (5 km), linking Kilsby and Rugby, whilst bypassing J18 of the M1.
B4039 A420 west of Chippenham B4040 at Acton Turville
B4040 A46 at Old Sodbury, South Gloucestershire A419 at Cricklade, Wiltshire via Malmesbury
B4041 A419 in Cricklade, Wiltshire A4361 near Broad Hinton, Wiltshire via Wootton Bassett. The northernmost section, from Cricklade to north of Purton, is now part of the B4553.
B4042 A429 in Malmesbury, Wiltshire A3102 in Wootton Bassett, Wiltshire
B4043 A458 in Quinton, West Midlands A456 in Halesowen, West Midlands
B4044 A420 at Botley A40 at Eynsham Passes over Swinford Toll Bridge. Part of the A40 until the 1930s, later renumbered as the A4141.
B4046 A420 in Kingswood, South Gloucestershire A431 in Hanham|
B4047 Witney, Oxfordshire A40 west of Minster Lovell Former route of the A40
B4048 A432 in Fishponds, Bristol A4017 near Kingswood, South Gloucestershire Lodge Causeway
B4051 A4018 at Park Street top, Bristol M32, Junction 3 Park Row, Marlborough St and Ashley Road
B4052 B4051 at Sussex Place, Bristol A38 at Horfield, Bristol Ashley Hill and Ashley Down Road
B4053 The Centre, Bristol Temple Gate, Bristol Baldwin Street, Bristol Bridge and Victoria Street
B4054 A38 at Gloucester Road, Bristol A4 at Avonmouth Cranbrook Road, Parry's Lane and Shirehampton Road
B4055 A4018 at Westbury-on-Trym, Bristol New Passage The route is in two parts separated by a mile of the A4018. One runs from Westbury-on-Trym through Henbury to the south end of Cribbs Causeway and the other from J17 of the M5 to New Passage.
B4056 A4018 at Durdham Down, Bristol A38 at Filton Henleaze Road and Southmead Road
B4057 B4054 at Kingsweston A4018 at Brentry Part One
B4057 A38 at Patchway B4058 at Winterbourne, Gloucestershire Part Two: the two parts are separated by Filton Airfield, and were connected before the runway was extended in 1949.[1]
B4058 A432 at Eastville, Bristol A46 at Nailsworth
B4059 A432 at Yate B4427 at Earthcott via Iron Acton
B4060 A432 at Yate A4135 at Cam via Wotton under Edge
B4061 A38 at Alveston, Glos A38 near Whitfield Connects Thornbury with the A38
B4062 B4058 east of Charfield, Gloucestershire B4060 at Kingswood, Stroud District
B4063 A40 west of Cheltenham Gloucester Formerly part of the A40
B4066 A419 at Dudbridge, Gloucestershire Sharpness via Dursley and Berkeley
B4068 A436 west of Naunton, Gloucestershire Stow-on-the-Wold
B4069 A3102 north of Lyneham Chippenham, junction with A420 Formerly part of the A420
B4070 A417 at Birdlip, Gloucestershire Stroud
B4071 A38 south of Whitminster, Gloucestershire Saul, Gloucestershire
B4072 Gloucester A38 at Tuffley
B4073 Gloucester A46 at Painswick
B4077 A46 & A435 at the Teddington Hands east of Tewkesbury A429 in Stow-on-the-Wold via Teddington, Toddington, Stanway, Ford and Upper Swell
B4078 Winchcombe, Gloucestershire A46 at Sedgeberrow
B4079 B4080 at Bredon, Worcestershire A46 at Aston Cross, Gloucestershire via Kinsham and Aston on Carrant
B4080 A4104 at Defford, Worcestershire A38 at Tewkesbury, Gloucestershire via Eckington, Bredon's Norton, Bredon and Bredon's Hardwick
B4081 A44 west of Blockley, Gloucestershire B4632 at Mickleton via Chipping Campden
B4082 A422 at Upton Snodsbury, Worcestershire A44 at Pinvin, Worcestershire via Naunton Beauchamp
B4083 A44 at Pinvin, Worcestershire A4104 at Pershore, Worcestershire via Wyre Piddle
B4084 A4184 and B4035 at Evesham, Worcestershire M5 at Whittington, Worcestershire Previously the A44. There is also a spur named the B4084 between the new A44 at Egdon and the main B4084 near Windmill Hill
B4085 B439 at Bidford-on-Avon, Warwickshire B4035 at Badsey, Worcestershire via Marlcliff, Cleeve Prior, The Littletons and Blackminster
B4086 A422 in Stratford-upon-Avon B4100 near Warmington via Tiddington, Wellesbourne, Compton Verney, Kineton and Edge Hill
B4087 B4086 in Wellesbourne, Warwickshire A422 and A445 in Leamington Spa, Warwickshire via Whitnash, Warwickshire
B4088 A422 and A441 west of Alcester, Warwickshire A44 north of Evesham, Worcestershire via Weethley, Dunnington, Iron Cross, Norton and Harvington. Formerly continuation of A441.
B4089 A3400 at Wootton Wawen, Warwickshire A435 and B4090 at Alcester, Warwickshire via Little Alne, Great Alne and Kinwarton
B4098 A51 south of Kingsbury, Warwickshire Coventry City Centre. Entire route formerly classified A423
via Nether Whitacre, Furnace End, Over Whitacre, Fillongley, Corley and Coundon. Section from Kingsbury to Coventry later renumbered A51.
B4099 A445 in western Leamington Spa A425 in south-eastern Leamington Spa

4 digits (41xx)[edit]

Road From To Notes
B4100 Bicester M40 near Bishop's Tachbrook (and upon reprisal - A441 Digbeth). Former alignment of A41 prior to the opening of M40. Starts in Bicester near the Bicester Village designer outlet and crosses the A43 near M40 J10. Continues via Baynards Green and Aynho then multiplexes with the A4260 from Adderbury for approximately 3.5 miles. It then regains its status from the Warwick Road, Banbury for less than ½ a mile as it becomes the A422 briefly. It then fully regains its status as the B4100, near Drayton where it continues for 14 miles passing M40 J12 & J13 at Gaydon and Warwick, respectively.

The road is briefly reprised in Birmingham City Centre as a continuation of the A34 until it meets with the B4114 and A47 in Birmingham City Centre.

B4101 Coventry City Centre Redditch Town Centre Passes through the villages of Balsall Common, Knowle, Dorridge, Hockley Heath, Wood End and Aspley Heath
B4102 Nuneaton Town Centre B4101 near Earlswood, West Midlands
B4103 A452 at Kenilworth A452 near Kenilworth
B4104 A452 at Kenilworth B4103 at Kenilworth
B4106 A4114 at Allesley, Coventry B4101 at Spon End, Coventry
B4107 A429 at Earlsdon, Coventry B4098 at Radford, Coventry
B4109 Coventry City Centre Hinckley Town Centre
B4110 B4109 at Hillfields, Coventry A45/A46 at Willenhall, Coventry
B4111 B4114 in Hartshill, Nuneaton Atherstone
B4112 A426 in Rugby, Warwickshire B4114 in Church End, Warwickshire
B4113 A444 in Nuneaton A452 near Leamington Spa
B4114 A47 in Saltley, Birmingham A5460 at Fosse Shopping Park, Leicestershire Connects Birmingham to Coleshill. Formerly part of A47.
B4115 A45 in Finham, Coventry A46/A429 near Warwick
B4116 B4098, B4114 at Over Whitacre, Warwickshire B5006 near Measham, Leicestershire
B4117 B4118 in Water Orton, Warwickshire A446, near Coleshill, Warwickshire
B4118 Castle Bromwich, West Midlands A446, near Water Orton, Warwickshire
B4119 B4118 in Castle Bromwich, West Midlands B4114 in Castle Bromwich
B4120 A38 in Longbridge, Birmingham A441 near Alvechurch, Worcestershire
B4121 A4123 at Quinton, Birmingham A441 at Cotteridge, Birmingham
B4122 A435 in King's Heath, Birmingham A4040 in King's Heath
B4124 A4540 in Ladywood, Birmingham A4040 in Harborne, Birmingham
B4124 A41 in Hockley, Birmingham A34 in Great Barr, Birmingham
B4125 A456 in Edgbaston, Birmingham A4092 in Smethwick, West Midlands
B4126 A41 in Sparkbrook, Birmingham B4145 near Small Heath, Birmingham
B4127 A38 Suffolk Street Queensway in Birmingham A4540 Islington Row Middleway in Birmingham
B4128 A45/A4540 in Bordesley, Birmingham A4040 near Stechford, Birmingham
B4129 A457 in Cape Hill, Birmingham A4040 in Harborne, Birmingham
B4132 A41 in Birmingham A38(M) at Aston
B4133 A4540 Dartmouth Middleway, Birmingham A47 in Nechells, Birmingham
B4135 A457 in Smethwick, West Midlands A457 in Cape Hill, Birmingham
B4136 A4092 in Smethwick, West Midlands A41 in Handsworth, Birmingham
B4137 A4040 in Witton, Birmingham A47 in Nechells, Birmingham
B4138 A453 in Perry Barr, Birmingham A4026 in Little Aston, Staffordshire
B4140 A41 in Hockley, Birmingham A4040 in Witton, Birmingham
B4142 A5127 in Erdington, Birmingham A453 in New Oscott, Birmingham
B4144 A41 in Hockley, Birmingham B4132 in Nechells, Birmingham
B4145 A41 in Sparkhill, Birmingham B4114 in Saltley, Birmingham
B4146 A41 in Tyseley, Birmingham A435 in King's Heath, Birmingham
B4147 A4040 in Stechford, Birmingham B4114 in Hodge Hill, Birmingham
B4148 A453 in Whitehouse Common, Sutton Coldfield A38 in East Birmingham; A5127 in Erdington Two branches south/west of Walmley
B4149 B4166 in Greets Green, West Midlands A4041 in West Bromwich
B4149 A4041 in Pheasey, West Midlands A453 in New Oscott, Birmingham
B4150 A420 Headington Hill A40 Oxford Northern Bypass Marston Road and Marsh Lane in Oxford.
B4151 A4148 in Walsall A453 near Bassetts Pole, Warwickshire Terminus is actually in Staffordshire
B4152 A454 in Aldridge, West Midlands A452 in Brownhills, West Midlands
B4153 A461 B4152 Coppice Road in Walsall Wood. Not signposted.
B4154 A4041 in Pheasey, West Midlands B5013 in Hednesford, Staffordshire
B4155 A452 in Brownhills, West Midlands A5 near Brownhills, in Staffordshire Part of former B4155 downgraded and closed when improved A5 opened.
B4156 A460 in Fallings Park, Wolverhampton A34 in Great Wyrley, Staffordshire
B4158 Chippenham, junction with A420 A350 north of Chippenham This is known as Malmesbury Road in Chippenham
B4160 Redditch Ring Road. One-way throughout its length.
B4161 A4039 in Blakenhall, Wolverhampton A41 near Tettenhall
B4162 A41 in Bilston A4039 in Bilston. Previously also met A463 at A4039 junction prior to opening of Black Country Route (A463/A454).
B4163 A41 in Bilston A461 in Dudley Port, Sandwell
B4166 A461 near Great Bridge, West Midlands A4034 in Oldbury, West Midlands
B4167 B4124 in Hamstead, Birmingham A4041 in Great Barr, West Midlands
B4169 Smethwick Town Centre, West Midlands A4034 in Blackheath, West Midlands Divides into two branches, each joining A4034 north and south of Blackheath
B4170 A457 in Oldbury, West Midlands B4169 in Langley Green, West Midlands
B4171 A459 Dudley, West Midlands Blackheath, West Midlands Extended via former route of A461 Trindle Hill to meet A459 when bypass opened.
B4172 A461 in Brierley Hill A4100 in Brierley Hill
B4173 A459 in Netherton, West Midlands A458 in Cradley
B4174 A4100 in Quarry Bank, West Midlands A458 in Cradley
B4175 A449 in Wall Heath A459 in Upper Gornal, Dudley
B4176 A459 in Dudley A442 south of Telford
B4177 B4171 in Dudley A459/A461 junction in Blowers Green, Dudley King Street was part of A461 until Dudley Southern Bypass opened. Blowers Green Road part of A459 until bypass opened.
B4178 A449 in Wall Heath A4101 west of Kingswinford Town Centre Called Swindon Road along its entirety and runs for approximately half a mile
B4179 A4101 in Pensnett, West Midlands A461 in Brierley Hill Town Centre Previously continued along Tansey Green Road to B4175 Stallings Lane.
B4180 A491 in Wordsley, West Midlands A461 in Brierley Hill Eastern section of Brockmoor High Street is one way, traffic redirected along Hickman Road
B4182 A456 in Bearwood, West Midlands B4170 in Langley Green, West Midlands
B4183 Halesowen Town Centre, West Midlands A456 in Hayley Green, West Midlands Formerly route of A456 until Halesowen by-pass opened.
B4184 A441 in Redditch Bromsgrove Town Centre
B4185 B4091 in Catshill, Worcestershire A38 near Lydiate Ash, Worcestershire
B4186 A458 in Wollaston, West Midlands A4036 just south of Lye
B4187 A491 in Stourbridge A456 in Hagley, Worcestershire Entire route originally A450.
B4188 A491 near Belbroughton, Worcestershire A456 in Blakedown, Worcestershire
B4189 A449 near Kidderminster, Worcestershire A442 near Kidderminster, Worcestershire Bridges the River Severn north of Kidderminster
B4190 B4189 near Kidderminster, Worcestershire A456 near Bewdley, Worcestershire Crosses the River Severn at Bewdley
B4192 A419 at Swindon, Wiltshire A4 in Hungerford, Berkshire
B4193 A449 near Hartlebury, Worcestershire A4025 at Stourport, Worcestershire
B4194 B4196 at Areley Kings, Worcestershire B4363 near Kinlet, Shropshire Goes through Bewdley
B4195 B4190 at Bewdley, Worcestershire A451 at Stourport, Worcestershire
B4196 A451 at Areley Kings, Worcestershire A443 at Holt Heath, Worcestershire
B4197 A443 at Great Witley, Worcestershire A44 at Knightwick, Worcestershire
B4199 B4194 near Kinlet, Shropshire B4363 near Kinlet, Shropshire 1 mile long

4 digits (42xx)[edit]

Road From To Notes
B4200 Wednesbury, West Midlands A4038 near Darlaston, West Midlands Originally (1922—1927) the route number for the A4117 in Shropshire
B4201 A4117 near Cleobury Mortimer, Shropshire B4363 near Cleobury Mortimer, Shropshire
B4202 A443 at Abberley, Worcestershire A4117 near Cleobury Mortimer, Shropshire
B4203 A443 at Great Witley, Worcestershire A44 at Bromyard, Herefordshire
B4204 A443 at Worcester A4112 at Tenbury Wells, Worcestershire
B4206 A443 at Worcester A449 at Worcester
B4210 Walsall, West Midlands A462 near Essington, Staffordshire
B4211 A4104 at Upton upon Severn, Worcestershire A417 between Corse and Hartpury, Gloucestershire
B4214 A438 at Ledbury, Herefordshire A4117 at Cleehill, Shropshire 28 miles long
B4217 Five Ways, Birmingham A4040 Fox Hollies Road at Acocks Green, Birmingham Route of the number 1 bus
B4221 B4215 at Newent A40 at Ross-on-Wye
B4223 A4058 at Llwynypia A4061 near Treorchy
B4224 A438 at Hereford A4136 at Mitcheldean
B4225 A449 at Old Gore B4224 at Old Gore Very short road to be used to cut the Old Gore Crossroads and Give Way traffic.
B4230 A438 near Byford A4112 near Weobley By way of Mansell Gamage, Norton Canon and Weobley
B4233 Abergavenny Monmouth By way of Llanvapley and Rockfield
B4237 A48 at Newport A48 at Newport Now the former A48 route through Newport. The previous route, including Newport Transporter Bridge is now unclassified.
B4242 A4109 at Aberdulais Pontneddfechan
B4245 A48 at Llandevaud A48 at Caldicot
B4246 A4043 at Abersychan A465 at Govilon
A465 at Llanfoist
By way of Blaenavon
B4260 A40 near Bridstow A40 near Hildersley, Ross-on-Wye
B4261 A469 at Cardiff A4161 at Cardiff Road Name: City Road
B4265 A4226 near Cardiff International Airport A473 at Bridgend
B4266 A4226 at Weycock Cross A4050 at Barry Road name: Pontypridd Road
B4267 A4119 at Canton A4055 and A4231 at Ty Verlon Industrial Estate
B4268 B4270 at Llandow A48 at Pentre Meyrick
B4269 A4042 at Llanellen B4246 at Llanfoist
B4270 B4265 North of Llantwit Major A4222 at Cowbridge
B4271 A4118 near Upper Killay B4295 at Llanrhidian
B4275 A4054 at Abercynon A4059 at Penywaun Originally the A4059 route.
B4278 A4093 near Gilfach Goch A4058 near Dinas This road originally ran through Dinas and Tonypandy but was upgraded to the A4058 route.
B4278 A4058 near Porth A4233 near Stanleytown
A4058 near Llwynypia
This road was originally the A4233 and A4058 but following the completion of the Porth Relief road these roads were downgraded.
B4280 A473 near Pencoed A4061 at Bryncethin
B4282 A4017 at Cwmafan A4063 at Cwmfelin
B4283 A48 near Groes, Port Talbot A4229 at South Cornelly
B4284 Five Ways, Birmingham B4124 in Edgbaston, Birmingham
B4286 A4241 at Port Talbot B4287 at Pontrhydyfen
B4287 B4434 at Neath A4107 at Pontrhydyfen
B4290 B4489 at Swansea railway station A4067 at Victoria Park
B4290 A483 near Jersey Marine A4230 at Neath Abbey
B4291 A48/A4230 near Peniel Green B4603 at Clydach
B4295 A4216 at Cockett B4271 at Llanrhidian north Gower road
B4296 A4118 at Killay A48 at Pontarddulais
B4297 A484 near Bynea A4138 near Llangennech
B4298 A40 west of Carmarthen B4299 at Meidrim
B4299 A4066 at St Clears B4333 south of Newcastle Emlyn by way of Trelech

4 digits (43xx)[edit]

Road From To Notes
B4301 A484 at Bronwydd A485 at Pontarsais
B4302 A483 near Llandeilo A462 near Crugybar
B4303 A476 near Felinfoel B4297 near Penceiliogi
B4304 A484/A4138 at Parc Trostre A484 in Sandy, west Llanelli
B4304 A484 in central Llanelli B4304 at Morfa
B4306 A4138 in Hendy B4309 near Bancycapel
B4308 B4309 at Llanelli A484 near Kidwelly
B4309 A484 in central Llanelli A484 near Cwmffrwd
B4313 A487 in Fishguard, Pembrokeshire Narberth, Pembrokeshire Starts at Main St, Fishguard (A487), winds generally S or SE finishing in Narberth (junction with B4314), via Gwaun Valley, Llanychaer, crosses B4329 at Greenway, Rosebush, Maenclochog, crosses A40; approximately 21 miles.
B4314 A4066 in Pendine A40 at Robeston Wathen
B4329 A487 W of Eglwyswrw A40 at Haverfordwest Crosses Preseli Mountains N to S, reaching 404 metres (1,325 ft); scenic views across south and west Wales
B4330 A487 in Haverfordwest A487 at Croes-goch Joins W-bound A487 to NE-bound A487
B4331 A40 at Letterston A487 at Mathry
B4332 A487 at Eglwyswrw, Pembrokeshire A484 at Cenarth, Carmarthenshire Via Newchapel (Manordeifi) and Boncath; crosses A478 near Blaenffos
B4333 A487 at Aberporth Airport A484 at Cynwyl Elfed Via Aberporth, Beulah, Cwm-cou (Carmarthenshire) and Newcastle Emlyn
B4337 A487 at Llanrhystud, Ceredigion B4302 near Llansawel, Carmarthenshire
B4355 A44 at Kington, Herefordshire A483 at Dolfor, Powys Crosses A488 at Knighton
B4347 A4348 near Vowchurch, Herefordshire Rockfield, Monmouth Crosses A465
B4348 B4350 at Hay-on-Wye, Brecknockshire A49 near Llandinabo, Herefordshire Crosses A465
B4356 Presteigne, Powys A483 at Llanbister, Powys
B4357 A44 near Kington, Herefordshire B4355 near Knighton, Powys
B4358 A483 at Beulah, Powys A4081 near Llandrindod Wells, Powys
B4360 A44 at Leominster, Herefordshire A4110
B4361 A49 at Ludlow, Shropshire A49 at Leominster, Herefordshire
B4362 A49/A456 at Brimfield, Herefordshire A44 near Kington, Herefordshire
B4363 A454 at Bridgnorth, Shropshire A4117 at Cleobury Mortimer, Shropshire
B4364 Bridgnorth, Shropshire A4117 near Ludlow, Shropshire
B4365 A49 at Ludlow, Shropshire B4368 at Corfton, Shropshire Crosses over the tracks of Ludlow Racecourse - traffic is stopped when course is in use
B4366 A4086 at Caernarfon A4244 / B4547
B4367 B4368 near Craven Arms, Shropshire A4113 at Bucknell, Shropshire
B4368 A458 near Bridgnorth, Shropshire A483 at Abermule, Powys Crosses A49 (at Craven Arms), A488 and A489
B4369 B4367 at Broome, Shropshire B4368 at Aston on Clun, Shropshire 0.5 miles long
B4370 A49 at Marshbrook, Shropshire A489 at Horderley, Shropshire The northern section from Little Stretton to All Stretton was renumbered to B5477 in 2004
B4371 A458 at Much Wenlock, Shropshire B5477 in Church Stretton town centre, Shropshire Intersects with the A49 at Church Stretton
B4372 A44 at New Radnor, Powys B4357
B4373 B5060 at Donnington, Telford, Shropshire Bridgnorth, Shropshire Goes through Ironbridge Gorge
B4375 B4373 at Broseley, Shropshire B4376 near Much Wenlock, Shropshire
B4376 B4373 at Broseley, Shropshire A458 at Much Wenlock, Shropshire
B4378 A458 at Much Wenlock, Shropshire B4368 at Shipton, Shropshire
B4380 A4169 near Ironbridge, Shropshire A5 at Montford Bridge, Shropshire Passes through the south and west of Shrewsbury
B4381 A490/A458 at Welshpool, Powys B4388 near Welshpool
B4382 B4389 near Llanfair Caereinion, Powys B4393 near Lake Vyrnwy, Powys Crosses A495
B4383 A488 near Bishop's Castle, Shropshire A489 near Bishop's Castle, Shropshire 1 mile long
B4384 A488 at Bishop's Castle, Shropshire B4385 at Bishop's Castle, Shropshire Schoolhouse Lane; less than 0.5 miles long
B4385 A4113 at Leintwardine, Shropshire A458 near Llanfair Caereinion Passes through Montgomery, Powys; crosses A488, A489 and A483
B4386 A458/A488 at Shrewsbury A483 at Abermule, Powys 26 miles long; crosses A5 and A490
B4387 A488 at Minsterley, Shropshire A458 at Halfway House, Shropshire
B4388 Montgomery, Powys A458 near Welshpool, Powys Crosses A490
B4389 A495 near Llanfair Caereinion, Powys A483 near Newtown, Powys Crosses A458
B4390 A483 at Berriew, Powys B4389
B4391 A490 near Llanfyllin, Powys A494 at Bala, Gwynedd
B4392 A483 at Arddleen, Powys A458 at Cyfronydd, Powys Crosses A490
B4393 A458 at Ford, Shropshire Lake Vyrnwy Crosses A483 and A495; encircles Lake Vyrnwy
B4394 A442 at Wellington, Shropshire B4380 at Wroxeter Crosses A5
B4395 A458 at Llangadfan, Powys B4393 near Lake Vyrnwy
B4396 A5 at Nesscliffe, Shropshire B4393 near Lake Vyrnwy Crosses A483 and A495
B4397 B4396 at Knockin, Shropshire B5063 near Wem, Shropshire
B4398 B4396 at Knockin, Shropshire B4393 Llansantffraid, Powys

4 digits (44xx)[edit]

Road From To Notes
B4401 A5 at Corwen, Denbighshire A494 near Bala, Gwynedd
B4402 A494 B4391
B4403 A494 at Llanuwchllyn, Gwynedd B4391 near Bala, Gwynedd Runs along the eastern side of Bala Lake
B4404 A489 at Cemmaes Road, Powys A487 near Machynlleth, Powys
B4405 A487 at Minffordd, Gwynedd A493 near Tywyn, Gwynedd
B4406 B4407 south west of Llyn Conwy, Gwynedd A5 south east of Betws-y-Coed, Gwynedd by way of Penmachno
B4407 B4391 near Ffestiniog, Gwynedd A5 near Pentrefoelas, Gwynedd by way of Ysbyty Ifan
B4410 A498 north of Prenteg A487 near Maentwrog Sarn Helen - crosses A4085 at Garreg
B4411 A487 at Glan-Dwyfach, Gwynedd A497 at Criccieth, Gwynedd
B4416 A470 near Dolgellau, Gwynedd A494 near Dolgellau, Gwynedd
B4418 A487 near Pen-y-Groes and Llanllyfni, Gwynedd A4085 at Rhyd-Ddu, Gwynedd by way of Nantlle
B4422 Bodorgran (Anglesey) with road A4080 [53.198809,-4.402857] B5109 Llangefni Anglesey [53.258975,-4.326489]
B4425 A40 near Burford A429 east of Cirencester Formerly part of the A433
B4427 B4058 at Hambrook, South Gloucestershire A38 at Rudgeway Old Gloucester Road
B4429 A428 at Rugby M45/A45 at Thurlaston
B4434 A474 in Neath A465 at Resolven
B4436 A4118 near Langrove A4067 at Blackpill
B4437 A44 near Wootton, Oxfordshire A361 north of Burford via Charlbury
B4438 A452 in Bickenhill, West Midlands B4102 at Catherine-de-Barnes, West Midlands Passes through Birmingham Airport
B4442 A404 at Little Chalfont A413 at Chalfont St Giles
B4445 A418 at Thame B4009 at Chinnor
B4449 B4044 at Eynsham, Oxfordshire A4095 at Bampton
B4450 Chipping Norton, Oxfordshire A436 east of Stow-on-the-Wold via Bledington
B4451 B4100 at Gaydon, Warwickshire A425 at Southam, Warwickshire
B4453 A445 in Leamington Spa, Warwickshire A45 at Dunstore Heath near Rugby, Warwickshire
B4455 A429 near Halford, Warwickshire A5 at High Cross, Leicestershire Part of the Fosse Way (Roman road)
B4461 M48 at Aust B4061 at Alveston
B4464 A454, near Willenhall, West Midlands A454/M6 junction, Bentley, West Midlands Former route of A454 through Willenhall Town Centre. Extended through Bentley to M6 junction 10 when A454 rerouted along Black Country Route.
B4465 A420 at Easton, Bristol A46 near Tormarton Passes through Chester Park, Staple Hill and Pucklechurch, ending near Junction 18 of the M4. Prior to c1962, continued east from Pucklechurch, through Hinton, to A46 at Burton.
B4466 A4 (Hotwells Road), Bristol A4018 at Clifton, Bristol Jacob's Wells Road
B4467 B3129 in Clifton, Bristol A4176 at Clifton Down Pembroke Road
B4468 A4018 at Durdham Down, Bristol A38 at Horfield, Bristol Coldharbour Road and Kellaway Avenue
B4469 A38 at Horfield, Bristol A420 at St George, Bristol Muller Road and Rose Green Road
B4473 A458 west of Shrewsbury B4380 at Montford Bridge, Shropshire 1 mile long; crosses A5
B4483 B4163 in Coseley, West Midlands A457 in Woodsetton, West Midlands Not signposted off A457.
B4484 A460 in Fallings Park, Wolverhampton Bilston Town Centre Rerouted in Willenhall when town centre pedestrianised. Extended into Bilston along former A463 route when Black Country Route opened.
B4485 A44 at Worcester A4440 at Worcester
B4489 A483 at Swansea A48 and the M4 at Junction 46
B4491 North Circular Road at Gunnersbury B452 at Northfields, near Northfields Underground station Passes Gunnersbury Park. Road Names: Popes Lane, Little Ealing Lane.
B4492 A4000 at Gypsy Corner, North Acton just north of the A40, Western Avenue A4000 at Harlesden, just south of the A404 "Alternative" route through Park Royal via North Middlesex Hospital. Road Names: Park Royal Road, Acton Lane.
B4493 A34 at Chilton, Oxfordshire A4130 at Didcot, Oxfordshire Road originally ran through Harwell, Oxfordshire and terminated on the A417 but was extended to Chilton in 2016 to meet a new junction with the A34 and A4185.
B4494 A4 at Newbury Wantage
B4495 A4144 Abingdon Road, Oxford A4165 Banbury Road, Summertown, Oxford Passes through the east of Oxford, over Donnington Bridge, through Cowley and Headington, then Marston Ferry Road
B4499 A488 at Minsterley, Shropshire B4386 at Brockton, Shropshire

4 digits (45xx)[edit]

Road From To Notes
B4500 B5070 at Chirk, Wrexham B4580 at Llanrhaeadr, Powys
B4501 A543 at Denbigh, Denbighshire A4214 at Fron-Goch, Gwynedd passes Llyn Brenig, Alwen Reservoir and crosses A5 at Cerrigydrudion
B4505 A4251 at Hemel Hempstead A416 at Newtown, Chesham
B4509 B4060 at Wickwar A38 at Falfield
B4511 A4049 at Aberbargoed A4048 at Bedwellty
B4512 A4058 at Ystrad A4233 near Tylorstown
B4514 B4217 in Acock's Green, Birmingham A41 in Olton, Birmingham
B4516 B4145 in Saltley, Birmingham B4114 in Washwood Heath, Birmingham
B4517 A4037 in Tipton, West Midlands A461 in Great Bridge, West Midlands Road diverted through new tunnel under railway in Tipton replacing level crossing on West Coast Main Line.
B4518 A470 at Rhayader, Powys Llanbrynmair
B4519 A483 at Garth, Powys B4520 north of Upper Chapel, Powys runs beside MoD's artillery range on Mynydd Epynt
B4520 A483 at Builth Wells, Powys B4601 at Brecon, Powys
B4521 A49 five miles west of Ross-on-Wye, Herefordshire A40 at Abergavenny, Monmouthshire Road is approximately 20 miles long, heading in a south westerly direction from Herefordshire into South Wales. Near its western end it forms a part of the border of the Brecon Beacons National Park.
B4522 A4061 at Treherbert, Rhondda Cynon Taf Blaencwm, Rhondda Cynon Taf Road lasts approximately ¾ of a mile. Although on OS maps it is not displayed as the B4522, it is signposted as the B4522 on the A4061 in the local vicinity. Maps show it as Dunraven/Gwendoline Street, Treherbert.
B4524 A48 near Corntown, Vale of Glamorgan B4265 at Ewenny, Vale of Glamorgan
B4525 A422 at Middleton Cheney, Banbury A43 near Syresham, Brackley Road begins 1 mile east of the M40 J11 and is classified as a country route which connects to the A43, whilst bypassing Brackley. This road has been greatly truncated at its eastern end. Formerly, it ran to Northampton by way of Thorpe Mandeville, Moreton Pinkney, Adstone, Litchborough and Bugbrooke this route has been declassified.
B4526 Goring, Oxfordshire A4074 near Woodcote, Oxfordshire
B4528 A420 in Chippenham B4158 Malmesbury Road in Chippenham Road is ½ a mile long.
B4529 A4110 near Leominster, Herefordshire B4360 near Leominster
B4530 A4113 at Walford, Herefordshire A4110 at Adforton, Herefordshire
B4531 A4040 in Erdington, Birmingham A5127 in Erdington
B4532 A456 in Edgbaston, Birmingham B4217 in Edgbaston
B4534 A3102 in Freshbrook, Swindon A4311 in Blunsdon Begins near M4 J16 and banks in a north-westerly direction. A change in the road system in Blunsdon meant closure of part of the original route at Lady Lane, which is no longer accessible to motor vehicles. The B4534 regains its status at the northern end of Lady Lane where it continues to its terminus at the A4311.
B4536 B4084 in Pershore A4104 on the outskirts of Pershore
B4537 A461 in Wollaston, West Midlands A458 near Wollaston
B4540 B4506 near Edlesborough A5 near Dunstable
B4541 B489 in Dunstable B4540 near Whipsnade
B4542 A4125 in Eastbury A4125 near Oxhey and A4008 in South Oxhey
B4544 A429 in Coventry A4600 in Coventry
B4545 A5 at Valley A5154 at Holyhead
B4546 A487/A478 road roundabout near Cardigan Poppit Sands goes through St Dogmaels
B4547 A4086 at Cwm-y-glo A4244 / B4366
B4548 A487 near Cardigan Gwbert
B4549 A456 Bewdley Hill at Kidderminster, Worcestershire A451 Stourport Road at Kidderminster Sutton Park Road; 1 mile long
B4550 Near A38 in Worcester Near A4536 in Worcester Road links Worcester City Centre to the north of Worcester.
B4551 A456/A459 in Halesowen, West Midlands A491 near Lydiate Ash, Worcestershire
B4553 B4040 in Cricklade A3102 in Toothill
B4555 Bridgnorth, Shropshire B4363 near Highley, Shropshire
B4557 A406, Neasden B4565 at Wembley Stadium Link road between Wembley Stadium and industrial estates with IKEA store and Tesco in Brent Park
B4558 (England) A459 in Upper Gornal, Dudley B4176 in Dudley Town Centre Roads named Burton Road, Highland Road and Salop Street
B4558 (Wales) A40 east of Brecon A4077 southwest of Crickhowell Parallels A40 in the Usk valley; passes through Pencelli, Talybont-on-Usk, Cwm Crawnon and Llangynidr
B4560 A40 near Bwlch A4047 at Beaufort, Blaenau Gwent
B4563 A459, High Holburn, Sedgley A463, Gospel End Street, Sedgley. Vicar Street, Sedgley. Passes All Saints Parish Church. Not signed.
B4564 A4093 at Hendreforgan B4564 at Gilfach Goch
B4565 A4089 at Wembley Park A404 at Wembley Clock Tower Along Empire Way past Wembley Stadium complex
B4568 A470 near Caersws, Powys B4389 near Newtown, Powys
B4569 B4518 at Llanidloes, Powys B4568 at Caersws, Powys
B4570 A484 near Cardigan B4333 at Cwm-cou
B4573 A496 at Harlech, Gwynedd A496
B4574 A4120 at Devil's Bridge, Aberystwyth B4518 near Rhayader, Powys Described by the AA as one of the ten most scenic drives in the world.[2]
B4576 A485 at Abermad, Ceredigion B4342 at Nantcwnlle, Ceredigion
B4579 A5/A483 at Oswestry, Shropshire B4500 at Glyn Ceiriog, Wrexham
B4580 A5/A495 at Oswestry, Shropshire B4391 near Llanfyllin, Powys
B4582 A487 at Llantood, north Pembrokeshire A487 near Newport, Pembrokeshire Via Glanrhyd and Nevern
B4587 B4176 in Dudley Town Centre B4177 in Dudley
B4590 B4484 near Willenhall, West Midlands A462 near Willenhall Previously part of A454 when first section of The Keyway opened. Not signed as B4590.
B4591 B4237 at Newport A467 at Abercarn The former A467 route into central Newport.
B4593 A4067 at Mumbles Caswell Bay
B4594 A44 near Walton, Powys B4567 near Erwood
B4595 A4058 near Pontypridd A4119 at Talbot Green Road originally started at Llantwit Fardre but following the completion of the Church Village bypass, most of the former A473 route became part of the B4595. The A4058 near Glyntaff also became part of the B4595. This road also has three road links, one near the A470 in Glyntaff where the A4058 originally started, the other in Tonteg near Powerstation hill and another near Beddau where the A473 originally ran.
B4596 B4591 at Newport B4236 at Caerleon Bridge The former A449 route into central Newport.
B4599 A4067 in Ystalyfera A4067 near Penrhos

4 digits (46xx)[edit]

Road From To Notes
B4601 A470/A40 roundabout east of Brecon, Powys A470/A40 roundabout southwest of Llanfaes near Brecon, Powys former route of A40 prior to construction of Brecon Bypass
B4602 A470 junction northeast of Brecon, Powys B4601 Heol Gouesnou, Brecon, former route of A470 prior to construction of Brecon Bypass
B4603 A483/A4118 junction at Greenhill, Swansea A4067 near Cilmaengwyn
B4620 A483 at Fforestfach A4240 at Loughor
B4624 A44 at Evesham A4184 at Evesham Worcester Road.
B4632 Stratford-upon-Avon Cheltenham Old A46. Passes through Winchcombe, Prestbury, near Stanton, Broadway, Aston-sub-Edge, Wootton-sub-Edge, Mickleton, Clifford Chambers
B4640 Newbury Tot Hill Old A34 road. Until it was replaced by the Newbury Bypass it was originally the only part of the road between Oxford and Winchester that was not a dual carriageway.
B4642 A4071 south west of Rugby, Warwickshire A426 in central Rugby Old route of the A4071 before the building of the Rugby Western Relief Road.
B4669 B590 at Hinckley B4114 at Sapcote


  1. ^ "New Popular Edition Maps". www.npemap.org.uk.
  2. ^ "Cycling in the UK - Cycling Trips & Routes - Visit Wales". www.cycling.visitwales.com.