British carriage and wagon numbering and classification
A number of different numbering and classification schemes have been used for carriages and wagons on Britain's railways, and this page explains the principal systems. Carriages and wagons (either not self-propelled, or part of a multiple unit which has power units distributed throughout a semi-permanent formation of carriages) have frequently had similar arrangements for classification and numbering, so are considered together. There are also links to other pages that deal in greater depth with the particulars of individual types.
Note on classification
Carriage and wagon classification has never been quite the same as locomotive and multiple unit classification. For most railways, specific types were identified by their Diagram Number. This could simply be arranged by consecutive number, or there could be some greater organisation of numbers so that similar types were grouped together.
However, carriages and wagons have rarely been referred to in general terms by their Diagram Number. Instead there have been a variety of other codes and designations, referring to generic designs rather than specific types. For instance, there were the BR (adapted from the LNER system) and LMS carriage codes, which indicated interior layout or usage. The GWR identified their non-passenger carriages and wagons through a series of animal designations, including sea life for departmental (non-revenue earning) stock, followed by a letter for detail differences, e.g. Beetle A.
The majority of the sections below deal solely with carriage and wagon numbering series, though where a particular classification system was used this is also described.
Before nationalisation in 1948, each railway company had its own numbering arrangements.
- The Great Western Railway and London, Midland and Scottish Railway (from 1933) adopted a system which allocated number ranges within a series for different types.
- The Southern Railway followed a similar approach, but used two series; for passenger carriages and for non-passenger carriages.
- The London and North Eastern Railway numbered its carriages with the first digit indicating the area it was allocated to.
- The Great Western Railway Diagram Numbers included a letter to indicate the general layout or usage, followed by a serial number issued consecutively.
British Railways inherited the stock of the 'Big Four' and a substantial number of 'Private Owner' wagons. It also inherited the stock of the Pullman Car Company when it was nationalised in the late 1950s.
Arrangements at Nationalisation
The numbers of carriages and wagons inherited from the 'Big Four' companies were left unchanged, but with a prefix letter to show where they had originated from, as follows:
|E:||London & North Eastern Railway|
|M:||London Midland & Scottish Railway|
|W:||Great Western Railway|
A "D" prefix in front of the regional prefix indicated departmental (non-revenue earning) stock. Departmental stock (including locomotives) inherited from the Southern Railway carried numbers with an "S" suffix (indicating Service stock, an alternative term for departmental) which was deleted and replaced with the "DS" prefix.
Former 'Private Owner' wagons, owned by industrial concerns rather than the railway companies, had a prefix letter "P" but were renumbered into a new series commencing at 3000.
Some carriages and wagons built by British Railways to the designs of the 'Big Four' companies were numbered in their series and carried the appropriate letter prefix. BR then introduced its own number series, for wagons beginning with B. Initially most designs were based on, or similar to, those of the pre-Nationalisation companies.
Arrangements from 1951
In 1951, the first carriages built to British Railways' designs appeared, known as the 'Mark I'. Numbers had a prefix letter (or letters) to indicate the region to which the carriage was allocated. The inherited carriages then had a suffix letter indicating the region responsible for heavy maintenance, usually the same as the company of origin.
New carriages had no suffix: when Pullman Car Company carriages were added, their numbers carried a suffix (indicating regional allocation) but no prefix.
The regional allocation letters used were:
|GE:||Great Eastern lines|
|M:||London Midland Region|
|NE:||North Eastern Region|
Wagons retained the existing prefixes indicating their origin, and new stock built to British Railways designs was given a "B" prefix.
British Railways adopted the following numbering system for carriages and wagons built to its own designs (a small number of types built to pre-Nationalisation designs were later allocated numbers in this series, but only following rebuilding to new types):
|1||-||499||First class Restaurant & Kitchen|
|500||-||999||Pullman (after Pullman Car Company nationalised)|
|1000||-||1999||Third class & Unclassified Restaurant & Kitchen|
|2000||-||2399||First class Sleeper|
|2500||-||2899||Third class Sleeper|
|2900||-||2999||Royal saloons (later all Royal Train)|
|3000||-||3499||First class Open|
|3500||-||3699||Second class Open|
|3700||-||9199||Third class Open|
|9200||-||12999||Third class Brake Open|
|13000||-||13999||First class Corridor|
|14000||-||14999||First class Brake Corridor|
|15000||-||20999||Composite First & Third class Corridor|
|21000||-||23999||Composite First & Third class Brake Corridor|
|24000||-||33999||Third class Corridor|
|34000||-||39999||Third class Brake Corridor|
|50000||-||54999||Single-ended Driving Motor Diesel Mechanical Multiple Unit|
|55000||-||55999||Double-ended Driving Motor Diesel Mechanical Multiple Unit|
|56000||-||58999||Driving Trailer Diesel Mechanical Multiple Unit|
|59000||-||59999||Trailer Diesel Mechanical Multiple Unit|
|60000||-||60999||Diesel Electric Multiple Unit|
|61000||-||67999||Motor Electric Multiple Unit|
|68000||-||68999||Parcels Electric Multiple Unit|
|69000||-||69999||Restaurant and Kitchen Electric Multiple Unit|
|70000||-||74999||Trailer Electric Multiple Unit|
|75000||-||78999||Driving Trailer Electric Multiple Unit|
|79000||-||79999||Diesel Multiple Unit (pre-Modernisation Plan)|
|80300||-||80499||Travelling Post Office|
|80500||-||99999||Hauled non-passenger carrying|
Numbers 100000 to 999999 were used for non-passenger rated stock (including wagons, vans and departmental (non-revenue earning) carriages), while internal user vehicles (stock used for internal purposes (e.g. stores) at specific locations and unlikely to move) took numbers in the 0xxxxx series. For more details see below.
Initially some non-gangwayed carriages were numbered in the 5xxxx series, but these were renumbered 4xxxx when the Modernisation Plan Diesel Multiple Units started to arrive. Another change came when Third Class was renamed Second Class. There had been very few Second Class carriages before this change (mainly used in Boat Trains since ships still used all three classes), and most were absorbed into former Third Class carriages, although they had fewer seats.
The same series was used for 'Mark II' coaches built in the 1960s, but when 'Mark III' carriage was introduced in the early 1970s new number ranges were carved out of the old series. These new ranges were perpetuated for 'Mark IV' carriages in the 1980s, and were as follows:
|10000||-||10499||Restaurant and Kitchen|
|11900||-||11999||Composite First & Second class|
|40000||-||40999||High Speed Train Restaurant & Kitchen|
|41000||-||41999||High Speed Train First class|
|42000||-||42999||High Speed Train Second class|
|43000||-||43999||High Speed Train Driving Motor|
|44000||-||45999||Second class Brake|
|48000||-||48999||Advanced Passenger Train Trailer|
|49000||-||49999||Advanced Passenger Train Motor|
|82000||-||82999||Driving Van Trailer|
Diesel multiple unit builds in the 1980s utilised the 52xxx, 55xxx, 57xxx and 58xxx series for carriages, all of which were motored. The 55xxx and 58xxx contained a mix of driving and non-driving motors, but the 52xxx and 57xxx cars were all driving motors. Some series have been used for conversions of carriages, e.g. 63xx has been used for a variety of miscellaneous carriages, including generator vans and observation saloons. Privately owned carriages were allocated numbers in the 99xxx series, with bullion and exhibition vans.
A major change in 1983 when prefix and suffix letters was abandoned, and any carriage that had the same number as another carriage or a locomotive was renumbered. The programme worked as follows:
|14000-14999||to||17000-17999||to avoid clashing with Southern Railway carriages|
|to||7000-7999||to avoid clashing with Southern Railway carriages|
|25000-26999||to||18000-19999||to avoid clashing with Class 25 and 26 locomotives|
|40000-40099||to||40400-40499||to avoid clashing with Class 40 locomotives|
|50000-50999||to||53000-53999||to avoid clashing with Class 50 locomotives|
|56000-56999||to||54000-54999||to avoid clashing with Class 56 locomotives|
|81000-81999||to||84000-84999||to avoid clashing with Class 81 locomotives|
|85500-85599||to||94000-94099||to avoid clashing with Class 85 locomotives|
|86000-86999||to||93000-93999||to avoid clashing with Class 86 locomotives|
Further renumberings have taken place as new locomotives were introduced. Most have involved only a handful of carriages, but a major one saw carriages in the 920xx series renumbered 929xx when Class 92 locomotives were introduced.
This series has been perpetuated, though the series have been adapted for new generation multiple unit stock. For instance, the latest diesel multiple units have reused the 50xxx and 79xxx series for driving motors and the 56xxx series for non-driving motors. In the electric multiple unit series, Class 390 Pendolinos have reused the 68xxx and 69xxx series.
When BR began to build air braked wagons they had B prefixes, but this was dropped and six-figure numbers were used without prefix. Prefixes were re-introduced when wagons were transferred to the departmental/engineer's fleets.
Departmental and Internal User Stock
Most departmental and internal user vehicles are converted from revenue-earning stock; only a small number are built for non-revenue earning use. Initially stock inherited from the 'Big Four' companies was given regional prefixes (e.g. DE, DM, DS and DW) indicating their origin, and adapting existing number series.
From about 1951, British Railways started to use new numbering series for additions to departmental and internal user stock on a regional basis, as follows:
|Region||Departmental Carriages||Internal User Stock|
|London Midland||DM395000 onwards||020000 onwards|
|Eastern and North Eastern||DE320000 onwards||040000 onwards (a separate series commencing at 042000 was initially used for the North Eastern Region but later abandoned and these numbers have now been reused by the Eastern Region series)|
|Western||DW150000 onwards||Various series used in 06xxxx and 07xxxx ranges (only that commencing at 060900 now in use)|
|Southern||DS1 onwards (existing SR series) and DS70000 onwards (from 1957)||080000 onwards|
|Scottish||No separate series used||095xxx, 096xxx, 097xxx and 099xxx series used|
No prefix letters were used for internal user stock. Departmental wagons (and some passenger-rated non-passenger carrying coaching stock) often kept their original revenue earning stock number, but with the addition of the "D" prefix. On some occasions, passenger coaches that had been converted for use as wagons then entered departmental stock retaining their wagon number (most notably brake vans in the 963xxx series that were formerly passenger brake vehicles).
By the end of the 1960s, British Rail-built carriages were entering departmental stock and being allocated one of the regional prefixes according to their location, but from 1967 the "DB" prefix was introduced for all additions to departmental stock regardless of origin. This prefix was prefixed with a letter to indicate the use of the vehicle, as follows:
|A:||Mechanical & Electrical Engineers|
|C:||British Rail Engineering Ltd|
|K:||Signalling & Telecommunications|
|L:||Mechanical & Electrical Engineers Electrical Construction|
|Z:||Public Relations & Publicity|
The principal numbering series for carriages with the "DB" prefix have been 975xxx, then 977xxx. The latest series to be used is 971xxx. Carriages built new into departmental stock have usually been numbered in the 999xxx (and sometimes 998xxx) series (though this series also contains some conversions too).
Also in the early days of the "DB" prefix, some departmental locomotives were numbered in the 966xxx and 968xxx series, though in recent years those locomotives that remain self-propelled have been allocated locomotive Class 97.
TOPS CARKND classification system
When the Total Operations Processing System was introduced by British Railways, classifications were applied to all carriages and wagons and recorded in a field called CARKND, which is now also used to refer to the classification system as a whole. The classification comprises three letters, the first of which indicates the broad type, as follows:
|A:||Hauled passenger carriages|
|B:||Bogie Steel wagons (excluding coil-carrying wagons until 1984)|
|C:||Covered bulk wagons (except CA: goods brake vans)|
|D:||Diesel Multiple Unit carriages|
|E:||Electric Multiple Unit carriages|
|G:||High Speed Train carriages|
|I:||Ferry wagons (International wagons)|
|J:||Private owner bogie wagons (bogie steel coil wagons until 1984)|
|K:||Private owner special wagons (2-axle steel coil wagons until 1984)|
|L:||Advanced Passenger Train carriages (includes Eurostar and Siemens Velaro)|
|N:||Hauled non-passenger carriages|
|P:||Private owner 2-axle wagons (originally all private owner wagons)|
|Q:||Hauled departmental (non-revenue) carriages|
|R:||Railway operating vehicles: Barrier wagons, Adaptor wagons, Runners and Diesel Brake Tenders|
|S:||2-axle steel wagons (excluding coil-carrying wagons until 1984)|
|U:||International hauled coaching stock (Uncovered bulk wagons until 1984)|
|X:||Unused (Exceptional and Special use wagons until 1984)|
|Y:||Departmental bogie wagons|
|Z:||Departmental two-axle vehicle (carriage or wagon)|
The second letter gave more detailed information, different for each series. The tables below list the variations for carriages:
|AC:||Open (2+2 seating)|
|AD:||Open (2+1 seating)|
|AF:||Driving Brake Open|
|AI:||Open (2+2 seating) - end of Mark IV rake|
|AL:||Open (2+2 seating) - with disabled persons' toilet|
|AU:||Sleeping (with pantry)|
|AX:||Generator Van (Until 1987: Narrow gauge)|
|AY:||(Until 1987: Narrow gauge Brake)|
|D and E Series|
|xB:||Driving Motor Brake|
|xD:||Non-driving Motor Brake|
|xF:||Battery Driving Trailer|
|xG:||Driving Trailer Brake|
|xI:||Battery Driving Motor|
|xO:||Battery Driving Trailer Brake|
|xP:||Driving Motor (Diesel Mechanical Multiple Unit only)|
|xQ:||Driving Motor Brake (Diesel Mechanical Multiple Unit only)|
|xR:||Non-driving Motor (Diesel Mechanical Multiple Unit only)|
|xS:||Driving Trailer (Diesel Mechanical Multiple Unit only)|
|xT:||Trailer (Diesel Mechanical Multiple Unit only)|
|xU:||Trailer Brake (Diesel Mechanical Multiple Unit only)|
|xX:||Non-passenger Driving Motor and single-car passenger DMMUs|
|xY:||Non-Passenger Non-driving Motor|
|G and L Series|
|xJ:||Trailer with Guard's compartment|
|xK:||Trailer Kitchen with Buffet|
|xM:||Trailer Kitchen with Lounge|
|NA-NI:||Gangwayed Brake vans|
|NF:||Brake van (non-gangwayed)|
|NG:||Car-carrying flat wagon|
|NJ-NK:||General Utility van|
|NS:||Post Office Sorting van|
|NT:||Post Office Stowage van|
|NU:||Post Office Stowage Brake van|
|NZ:||Driving Van Trailer|
|Q, Y and Z Series|
|xA-xC:||Ballast and sleeper wagons|
|xD:||General materials wagon|
|xF:||Ballast hopper wagon|
|xG:||General materials wagon|
|xP:||Staff or dormitory vehicle|
|xR:||Stores or materials vehicle|
|xS:||Operating vehicle (e.g. barrier, generator)|
|xU:||Brake van plough|
|xV:||General equipment vehicle (e.g. flat wagon)|
|xW:||On-track plant, saloon or self-propelled vehicle|
|xX:||Specialist equipment vehicle|
|xY:||Electrification equipment vehicle|
|xZ:||Miscellaneous vehicle (e.g. snowplough, unpowered former locomotive)|
The final letter indicated the braking arrangements. Nowadays almost all stock is air-braked, but when TOPS was introduced there was much greater variety, which made marshalling trains more complicated and this information essential. The letters were:
|A:||Air brake only|
|B:||Air brake plus through vacuum pipe|
|F:||Vacuum brake (AFI equipment) [AFI: Accelerator Freight Inshot - a rapid-acting vacuum brake]|
|G:||Vacuum brake plus through air pipe (AFI equipment)|
|H:||Dual brake (AFI equipment)|
|O:||Unfitted (handbrake only)|
|P:||Unfitted with through vacuum pipe|
|Q:||Unfitted with through air pipe|
|R:||Unfitted with through air and vacuum pipes|
|V:||Vacuum brake only|
|W:||Vacuum brake plus through air pipe|
|X:||Dual brake (air and vacuum)|
|Y:||Unfitted (Civil Engineer's self-propelled stock)|
|Z:||Automatic brake of unknown working order|
- Marsden, Colin J. (1984). BR and Private Owner Wagons. Rolling stock recognition 2. Shepperton: Ian Allan. p. 6. ISBN 0-7110-1403-5.
- Hendry, Robert (2003). British Railway Goods Wagons in Colour 1960-2003. Hinckley: Midland Publishing. p. 94. ISBN 1-85780-170-9.