British Rail Class 350

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British Rail Class 350 Desiro
350265 Watford Junction.jpg
London Midland Class 350/2 No. 350265 at Watford Junction
350243 Standard Class Interior.jpg
The interior of Standard Class aboard a London Midland Class 350/2
In service June 2005 – present[1]
Manufacturer Siemens
Family name Desiro
  • 2004–2005[2]
  • 2008–2009[3]
  • 2013–2014[4]
Number built 87 trainsets
Formation 4 cars per trainset
Fleet numbers
  • 350101–350130
  • 350231–350267
  • 350368-350377
  • 350401-350410
Capacity 19 first class and 210 standard class per trainset
Car length 20.4 m (66 ft 11 in)[5]
Width 2.796 m (9 ft 2 18 in)[5]
Maximum speed
  • 100 mph (160 km/h) (350/2 only)
  • 110 mph (180 km/h)
Weight 175.5 tonnes (172.7 long tons; 193.5 short tons)[5]
Traction motors 4 × Siemens asynchronous type 1TB2016-0GB02[6]
Power output 1,500 kW (2,000 hp)
250 kW (340 hp) (per motor car)[6]
Electric system(s)
Current collection method
UIC classification Bo'Bo'+2'2'+2'2'+Bo'Bo'
Bogies Siemens SGP SF5000[6]
Braking system(s) Air, regenerative
Multiple working Within class
Track gauge 1,435 mm (4 ft 8 12 in) standard gauge

The British Rail Class 350 Desiro is a class of electrical multiple unit built by Siemens AG in 2004–05, 2008–09 and 2013–14. Thirty of these units, designated Class 350/1, were built for use by Central Trains and Silverlink on regional express services and services on the southern section of the West Coast Main Line. A further 37 Class 350/2 were ordered by London Midland in late 2007. All 37 units were delivered and in service by July 2009. A further 20 units have since been built, split equally between London Midland and TransPennine Express. The London Midland units are designated under the Class 350/3 subfleet, and the TransPennine Express units designated 350/4.

The Siemens Desiro UK family also includes units of Classes 185, 360, 380, 444 and 450.


The first order of 350s were delivered in a neutral grey and blue livery, as they were operated by both Central Trains and Silverlink.
The neutral colour scheme interior of the Class 350/1

The Class 350/1 units were originally part of an order for thirty-two 5-car Class 450 units for South West Trains. However, they were never built as such. Of the 160 carriages ordered, 40 were diverted as an additional ten 4-car Class 450 units, and the remaining 120 were modified as thirty 4-car Class 350/1 units. The top speed of the fleet was originally 100 mph (160 km/h), but all 350/1s were modified to allow 110 mph (180 km/h) running from December 2012, in order to make better use of paths on the busy West Coast Main Line.[4]

A second batch of Class 350/2 units, intended to replace the Class 321 units, was delivered in late 2008 and during 2009. The first of the Class 350/2 was launched on 8 October 2008 and carried invited guests around the Wildenrath Test Track.[3] The last of the Class 350/2 fleet (350267) was officially delivered to London Midland on 30 July 2009.[7] Class 350/2 differ from the Class 350/1 units in two key aspects: they have 3+2 seating in standard class (because they work short-hop commuter services, the Class 350/1 are 2+2 throughout, work longer distance services[2][1]) and lack the dual-voltage capability of the 350/1.

Class 350 trains are nearly identical to those of Class 450. The latter class is only fitted with traction equipment for Southern Region 750 V DC third rail, whilst the Class 350/1 units can operate from both 25 kV AC OLE, as is done in regular service, or alternatively third rail.[2] This dual-voltage capability came in useful when several units were leased to Southern in 2008-09 in order to cover for similarly equipped Class 377/2 units temporarily sub-leased to First Capital Connect, themselves to cover for delays in the construction of the 377/5 fleet.[8] All 350 units built since are not equipped for third-rail use but, like most modern British EMUs, can be retrofitted if necessary.

Every set of doors has its own set of guard-operated door controls behind a lockable panel. The cabs have three radio systems - Cab Secure Radio (CSR), National Radio Network (NRN) and the newest system, GSM-R. CCTV and Flip Dot destination screens are fitted throughout the train. The only visual difference externally between a 350/1 and 350/2 is the carriage end connector doors on a 350/2 are 1/2 yellow and black. This visual difference has been kept for the 350/3 and 350/4 units, ordered by London Midland and TransPennine Express respectively.[citation needed]


London Midland Class 350/3 No. 350369 at Crewe
The interior of First Class cabin aboard a London Midland Class 350
The interior of Standard Class accommodation aboard a London Midland Class 350/3

London Midland[edit]

The first Class 350s entered service in June 2005 with Central Trains.[1] These operated on services between Birmingham and Northampton via Coventry, and all Birmingham - Liverpool services, replacing Class 170 units. Most recently Desiros have taken over some peak services between Birmingham and Walsall.

Silverlink began operating in July 2005 between London Euston - Milton Keynes Central and Northampton.[9] The Class 350/1 were originally painted in an overall grey livery with blue doors and blue window surrounds with a mandatory yellow front-end warning panel required by safety rules.[citation needed] The original dual use of the units on Silverlink and Central Trains services mandated a non-operator specific livery.[citation needed]

The Central Trains and Silverlink franchises expired in 2007. At this point, the entire fleet transferred to the new West Midlands franchisee, London Midland. As part of the agreement, London Midland embarked on the acquisition of a significant number of new trains, the largest order of which was for 37 additional Class 350s. The first 10 350/2 units entered service in December 2008.[3] In addition to the existing operations, these units took over the new Crewe - London Euston service running via Stoke-on-Trent and stopping at most of the Trent Valley Line stations.

The London Midland fleet is based at a new purpose-built depot at Northampton, which opened in June 2006 and can also service Class 321 and other Desiro units if required. It is located at Kings Heath, near Kingsthorpe. The TransPennine Express units are based at TPE's existing Ardwick depot with the government providing funding for the required electrification.

Four 350/1s were subleased to Southern from 2008 to 2009, to provide cover for Class 377 units subleased to First Capital Connect. After newer Class 377 "Electrostar" trains were built, these units were returned to London Midland.[10]

Ten additional four-car units have been built for the London Midland franchise, to provide additional capacity[4][11] entering service from October 2014.

The Class 350/1 fleet has been upgraded to 110 mph running as part of the preparation for HS2.[12]

TransPennine Express[edit]

Ten additional four-car units were introduced in 2013 for the First TransPennine Express to coincide with the completion of the electrification of the eastern section of the Manchester to Liverpool via Newton-le-Willows line.[4][13] These units are used on services between Manchester and Edinburgh / Glasgow, while the displaced Class 185s have remained with TransPennine to enhance capacity on other routes.[13] The new trains have a revised specification allowing 110 mph (177 km/h) running with an intercity-style interior described as similar to the existing 185s.[4][13]

The first First TransPennine Express Class 350/4 services ran on 30 December 2013 between Manchester Piccadilly and Glasgow Central.[14] The trains operate from Manchester Airport and Preston to Glasgow Central and Edinburgh Waverley.

All ten trains have been delivered to TransPennine Express allowing most services on the Manchester to Scotland route to be operated using EMUs. However some services on Fridays and at weekends remain timetabled for the existing Class 185 DMUs as services run in six or eight car formations on Fridays and at weekends and the ten Class 350/4s do not cover all diagrams.


The announcement of new trains was made by First when it was confirmed that they would become the next operator of the TransPennine Express franchise from 1 April 2016.[15]

The TransPennine Express fleet is scheduled to be replaced by Class 397 "Civity".[16]

Fleet details[edit]

Most units are owned by Angel Trains, although Class 350/2 EMU trains are owned by Porterbrook.

Class Operator No. Built Year Built Top Speed Cars per Set Unit nos. Seating Layout Notes
Class 350/1 London Midland 30 2004–2005 110 mph (177 km/h) 4 350101–350130 2+2 Dual Voltage
Uprated from 100 mph (161 km/h) top speed for December 2012.[4]
Class 350/2 37 2008–2009 100 mph (161 km/h) 350231–350267 3+2 AC only
Class 350/3 10 2014 110 mph (177 km/h) 350368–350377[17] 2+2
Class 350/4 TransPennine Express 10 2013–2014 350401–350410[17] 2+2 AC only; InterCity-style layout

Named units[edit]

Named units are as follows:[18]

  • 350110 - Project 110
  • 350232 - Chad Varah
  • 350370 - Lichfield Festival

Accidents and Incidents[edit]

  • On 11 April 2011 a fire broke out in a toilet cubicle on unit 350 232, following an explosion, while working the 16:25 from Northampton to London Euston as it approached Leighton Buzzard, resulting in the death of the female occupant of the toilet. Her death turned out to be suicide, as she carried a can of petrol into the toilet and locked the door. All other passengers and the train crew escaped unharmed.[19] Damage to the train was not serious and it was repaired at Wolverton.
  • On 16 September 2016, unit 350 264 struck a landslide at the entrance to Watford Tunnel and was derailed. Unit 350 233 then collided with the derailed train. Two people were injured and 350264 was badly damaged.[20] On the 10th November 2016, 350264 was seen on a low-loader being taken to Germany.[21]


Class 350 London Midland Diagram.PNG


  1. ^ a b c "Central Trains launches Class 350 EMU". Railway Herald. Issue 11. Page 3. 10 June 2005. Retrieved 19 July 2011.
  2. ^ a b c d Desiro UK Class 350/1 Multiple Unit - Siemens Mobility. Page 40. Retrieved 19 July 2011.
  3. ^ a b c "Siemens hands over first 'Desiro' EMU". Railway Herald. Issue 151. Page 4. 13 October 2008. Retrieved 19 July 2011.
  4. ^ a b c d e f New Rolling Stock for London Midland and for First TransPennine Express - London Midland. 14 September 2011. Retrieved 17 September 2011.
  5. ^ a b c Class 350 Technical data - Angel Trains. Retrieved 27 March 2011.
  6. ^ a b c "Class 350/1 - London Midland". Angel Trains. Retrieved 3 February 2016. 
  7. ^ "London Midland completes £190m investment with final Siemens Desiro" (Press release). Siemens UK. 30 July 2009. Retrieved 19 July 2011. 
  8. ^ Desiros for Loan to Southern - Southern Electric Group. Retrieved 6 June 2013.
  9. ^ Desiros for Loan to Southern - Southern Electric Group. Retrieved 29 April 2014.
  10. ^ "Announcements - GOV.UK". 
  11. ^ "West Midlands Rail Franchise Prospectus" (PDF). 
  12. ^ a b c Rail Passengers in the North of England and Scotland to benefit from new trains - First TransPennine Express. Retrieved 16 March 2012.
  13. ^ "Electric trains boost". Wigan Today. 3 January 2014.
  14. ^ "New TransPennine Express franchise launches". TransPennine Express. TransPennine Express. Retrieved 25 March 2017. 
  15. ^ Briginshaw, David (23 May 2016). "CAF to supply trains to TransPennine Express". International Rail Journal. Retrieved 25 March 2017. 
  16. ^ a b - EMU Pocket Book 2013 from Platform 5.
  17. ^ "EMU Formations". AbRail. Retrieved 25 June 2015. 
  18. ^ "Woman dies in toilet cubicle fire on Leighton Buzzard train". Daily Mail. London. 13 April 2011. Retrieved 31 May 2011. 
  19. ^ Ikonen, Charlotte. "Hundreds rescued after train derails at Hunton Bridge, near Watford Junction". Watford Observer. Newsquest. Retrieved 16 September 2016. 
  20. ^ "Derailed Watford Junction train makes final journey to scrapyard". Watford Observer. Retrieved 2016-11-10.