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British Rail Class 350 Desiro
London Northwestern Railway Class 350 at Watford Junction
Refurbished standard-class interior of a Class 350/1 unit
In service	June 2005 – present
Manufacturer	Siemens Transportation Systems
Built at	Vienna, Austria Uerdingen, Germany Praha Zlicin, Czech Republic Krefeld, Germany
Family name	Desiro
Replaced	Class 153 Class 170 Class 319 Class 321
Constructed	2004–2005 (350/1) 2008–2009 (350/2) 2013–2014 (350/3 and /4)
Number built	87
Number in service	82
Successor	Class 397 Class 730
Formation	4 cars per unit
Fleet numbers	350101–350130 350231–350267 350368–350377 350401–350410
Capacity	First class: 24 seats Standard class: 206–246 seats plus 117–149 standees
Owners	Angel Trains (350/1, 350/3, 350/4) Porterbrook (350/2)
Operators	London Northwestern Railway
Depots	Kings Heath (Northampton) Bletchley (Milton Keynes)
Specifications
Car length	20.34 m (66 ft 9 in)
Width	2.80 m (9 ft 2+1⁄4 in)
Maximum speed	110 mph (180 km/h)
Weight	175 tonnes (172 long tons; 193 short tons)
Traction system	Siemens SIBAS32 IGBT-VVVF
Traction motors	8 × Siemens 1TB2016-0GB02 asynchronous three-phase AC
Power output	250 kW (335 hp) per motor 2,000 kW (2,680 hp) total
Electric system(s)	25 kV 50 Hz AC overhead 750 V DC third rail (350/1 only)
Current collector(s)	Pantograph Contact shoe (350/1 only)
Bogies	Siemens SGP SF5000
Braking system(s)	Disk, regenerative
Safety system(s)	AWS TPWS
Coupling system	Dellner 12
Multiple working	Within class
Track gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge
Notes/references
Sourced from unless otherwise noted.

The British Rail Class 350 Desiro is a class of electric multiple unit passenger train built by Siemens Transportation Systems to its Desiro design between 2004 and 2014. All 87 are now operated by West Midlands Trains, having previously been operated by Central Trains, Silverlink, Southern, London Midland, First TransPennine Express and TransPennine Express.

Description

The Class 350/1 units were originally part of an order for 32 five-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 10 four-car Class 450 units, and the remaining 120 were modified as 30 four-car Class 350/1 units. These entered service in 2005 and were used jointly by Central Trains and Silverlink, both owned by National Express. 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.

In late 2007, a second batch of 37 was ordered by London Midland to replace its Class 321s. Designated as Class 350/2 units, they entered service between 2008 and 2009. Class 350/2s differ from the Class 350/1 units in two key aspects: having 3+2 seating in standard class (because they work short-hop commuter services; the Class 350/1 used for longer distance services are 2+2 throughout and lack the dual-voltage capability of the 350/1. Initially, Class 350/2 units had a maximum speed of 100 mph (160 km/h), but the fleet was upgraded to allow 110 mph running during 2018. This was to allow the operators to run mixed 350/1 and 350/2 services without causing delays, especially important given the capacity changes which HS2 works at London Euston were expected to cause.

Between 2013 and 2014, a further 20 were manufactured for London Midland and First TransPennine Express. Each took on ten units, the former designated the Class 350/3 and the latter the Class 350/4.

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 either 25 kV 50 Hz AC OLE, as is done in regular service, or alternatively third rail. This dual-voltage capability was utilised when several units were leased to Southern in 2009, in order to cover for similarly equipped Class 377/2 units temporarily sub-leased to First Capital Connect. All Class 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 dot-matrix destination screens are fitted throughout the train.

Current operation

West Midlands Trains

All of London Midland's 77 Class 350s were inherited by West Midlands Trains on 9 December 2017. WMT operate all of the units primarily under its London Northwestern Railway brand, however some units also run routes under the West Midlands Railway brand on the Chase Line. A further 10 were transferred from TransPennine Express in 2019–20.

The fleet is based at the purpose-built Kings Heath depot at Kingsthorpe, which opened in June 2006. In May 2021, they took over services on the Abbey line from Class 319s.

The first Class 350/2s were sent off lease in October 2024.

Former operations

Central Trains / Silverlink

Central Trains and Silverlink shared the 30 Class 350/1 units from 2005 to 2007. They were operated as a common user fleet in a neutral grey and blue livery.

They first entered service in June 2005 with Central Trains. These operated on services between Birmingham and Northampton via Coventry, and all Birmingham - Liverpool services, replacing Class 170s. Later on, the units also took over some peak services between Birmingham and Walsall.

Silverlink began operating the fleet in June 2005 between London Euston, Milton Keynes Central and Northampton.

The Central Trains and Silverlink franchises expired in November 2007.

London Midland

Once the Central Trains and Silverlink franchises expired, the entire Class 350 fleet transferred to London Midland with the West Midlands franchise.

As part of the franchise agreement, London Midland ordered 37 additional Class 350s. On 8 October 2008, the first of these was handed over to Porterbrook and carried invited guests around the Wildenrath Test Track. The first ten 350/2 units entered service in December 2008 and the final unit was officially delivered to London Midland on 30 July 2009. 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.

Several Class 350/1 units were subleased to Southern in 2009, to provide cover for Class 377/2 units subleased to First Capital Connect, themselves to cover for delays in the construction of the Class 377/5 fleet. All were returned within the year.

A further 10 four-car units were built later on in the franchise to provide additional capacity, entering service from October 2014 as Class 350/3s.

First TransPennine Express / TransPennine Express

In 2013, ten Class 350/4 units were introduced for First TransPennine Express services between Manchester and Edinburgh / Glasgow, coinciding with the completion of the electrification of the eastern section of the Manchester to Liverpool via Newton-le-Willows line. The first First TransPennine Express Class 350/4 services ran on 30 December 2013 between Manchester Piccadilly and Glasgow Central. The introduction of these units allowed most services on the Manchester to Scotland route to be operated using EMUs, displacing the Class 185s which were cascaded to other routes to enhance capacity. The units were based at Siemens' existing Ardwick depot in Manchester, with the government providing funding for the required electrification.

Following the transfer of the franchise to TransPennine Express (itself still a FirstGroup company) in 2016, 12 Class 397 Civity units were ordered to replace the Class 350s on TransPennine North West services. All ten moved to West Midlands Trains, in 2019 and 2020.

Future

London Northwestern Railway has said it will be replacing the Class 350/2 units with Class 730 Aventras. In October 2018, Porterbrook, which owns the Class 350/2 units, announced that it was considering to convert them into battery electric multiple units for potential future cascades to non-electrified routes.

Fleet details

The Class 350/1s, 350/3s and 350/4s are owned by Angel Trains, and the Class 350/2s are owned by Porterbrook.

Named units & Special liveries

• 350110 - Project 110
• 350111 - Apollo (de-named)
• 350115 - Archimedes (de-named)
• 350232 - Chad Varah
• 350370 - Lichfield Festival
• 350375 - Vic Hall
• 350377 - Graham Taylor OBE

In May 2023, unit 350104 was decorated with special Eurovision Song Contest 2023 livery.

Accidents and incidents

In 2005, units 350105 and 350108 were damaged after colliding with a falling tree. Both were returned to Germany for repairs.

On 11 April 2011, a fire broke out in a toilet cubicle on unit 350232, 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.

On 16 September 2016, unit 350264 struck a landslide at the entrance to Watford Tunnel and derailed. It was then hit by unit 350233 travelling in the opposite direction. Two people were injured and unit 350264 was severely damaged. The leading carriage of unit 350233 was severely damaged, and all four carriages were damaged along one side. The consequences were not as serious as they could potentially have been because the derailed train was fortuitously kept from diverging too far from its line by equipment on the bottom of the train catching on the rail, meaning unit 350233 struck only a glancing blow. On 10 November 2016, unit 350264 was moved to Germany by low-loader, followed later by 350233. Both re-entered service in early 2018.

Notes

1. 350/1
2. 350/1, 350/2 DMSO and 350/2 Assembly
3. 350/2 TCO & 350/2 PTSO
4. 350/3 & 350/4

References

1. ^ "Desiro Technical Data". Modern Locomotives Illustrated. No. 178. August 2009. pp. 13–15.
2. "New Class 350-3s for London Midland to enter service early". Rolling Stock. Rail Technology Magazine. 3 October 2014. Retrieved 23 December 2024.
3. ^ "Reference Brochure Trains" (PDF). mobility.siemens.com. Archived from the original (PDF) on 6 October 2011. Retrieved 30 December 2021.
4. ^ "Siemens hands over first 'Desiro' EMU". Railway Herald. No. 151. 19 October 2008. p. 4.
5. ^ "New Rolling Stock for London Midland and for First TransPennine Express". London Midland. 14 September 2011. Archived from the original on 27 September 2013. Retrieved 17 September 2011.
6. "West Midlands Franchise: Invitation to Tender" (PDF). Department for Transport. August 2016. pp. 78–79. Archived (PDF) from the original on 25 April 2017. Retrieved 16 August 2017.
7. ^ "Class 350 – Angel Trains". angeltrains.co.uk. Archived from the original on 4 September 2021. Retrieved 28 August 2021.
8. ^ "Class 350 - London Midland". Porterbrook. Archived from the original on 31 July 2017. Retrieved 31 July 2017.
9. ^ "Class 350/1 - London Midland". Angel Trains. Archived from the original on 13 October 2016. Retrieved 3 February 2016.
10. System Data for Mechanical and Electrical Coupling of Rail Vehicles in support of GM/RT2190 (PDF). London: Rail Safety and Standards Board. 22 June 2011. p. 4. SD001. Archived from the original (PDF) on 1 April 2012. Retrieved 22 November 2022.
11. "Speed trials for Class 350/1". Rail Express. No. 185. October 2011. p. 31.
12. "350 to undergo 110mph testing". Rail Magazine. No. 680. 5 October 2011. p. 25.
13. ^ "37 Desiros on the way in £164m Midlands deal". Rail Magazine. No. 573. 29 August 2007. p. 12.
14. ^ "Central Trains launches Class 350 EMU". Railway Herald. No. 11. 10 June 2005. p. 3.
15. "Porterbrook Class 350/2 Technical Information". Archived from the original on 17 December 2018. Retrieved 25 January 2019.
16. "West Midlands Prospectus" (PDF).
17. ^ Desiros for Loan to Southern Archived 28 September 2013 at the Wayback Machine - Southern Electric Group. Retrieved 6 June 2013.
18. ^ "350s with Southern until November". Today's Railways UK. No. 95. November 2009. p. 65.
19. "Chase Line electric trains begin operating". Rail Magazine. No. 879. Peterborough: Bauer Media. 22 May 2019. p. 18. ISSN 0953-4563.
20. ^ "LNWR 350/4s in traffic". Rail Magazine. No. 906. 3 June 2020. p. 25.
21. "Northampton's £31m depot opens". The Railway Magazine. No. 1265. September 2006. p. 74.
22. "Unit Focus". Railways Illustrated. No. July 2021. p. 18.
23. ^ Russell, David (December 2024). "First London Northwestern Railway '350/2s' returned to Poterbrook". Units. Rail Express. No. 343. p. 22.
24. "SRA reveals Class 350 duties". The Railway Magazine. No. 1240. August 2004. p. 9.
25. "Siemens Desiro Class 350s start passenger services". Rail Magazine. No. 516. 22 June 2005. p. 6.
26. "Silverlink's 350 Desiros enter WCML service". Rail Magazine. No. 517. 6 July 2005. p. 25.
27. "London Midland completes £190m investment with final Siemens Desiro" (Press release). Siemens UK. 30 July 2009. Archived from the original on 6 August 2011. Retrieved 19 July 2011.
28. "Announcements - GOV.UK".
29. ^ "Rail Passengers in the North of England and Scotland to benefit from new trains". First TransPennine Express. Archived from the original on 28 August 2012. Retrieved 16 March 2012.
30. "Electric trains boost". Wigan Today. 3 January 2014. Archived from the original on 3 January 2014.
31. Gibbs, Nigel (November 2017). "Vivarail 230s for new West Mids franchise as 170s to go". Today's Railways UK. No. 191. p. 8.
32. "Class 350 & 319 Fleet | London Northwestern Railway". London Northwestern Railway. Retrieved 18 July 2021.
33. "Porterbrook investigates battery-powered Desiros". Rail Magazine. No. 864. 24 October 2018.
34. Barrow, Keith (16 October 2018). "Porterbrook plans Siemens Desiro battery-electric conversion". International Railway Journal. Retrieved 17 October 2018.
35. "Desiro Design & Build". Modern Locomotives Illustrated. No. 178. August 2009. pp. 4–11.
36. Butlin, Ashley (November 2024). "Multiple Units". Stock Update. The Railway Magazine. Vol. 170, no. 1484. p. 95.
37. Butlin, Ashley (December 2024). "Multiple Units". Stock Update. The Railway Magazine. Vol. 170, no. 1485. p. 95.
38. ^ - EMU Pocket Book 2013 from Platform 5.
39. "Desiro fleet upgraded for higher speed operation". Railway Gazette International. 7 March 2013.
40. ^ "Desiro Fleet Listing". Modern Locomotives Illustrated. No. 178. August 2009. pp. 72–76.
41. "Rail industry and Samaritans launch partnership". Rail.co.uk. 10 October 2012. Archived from the original on 17 August 2017.
42. "Ceremony will see London Midland train officialy [sic] renamed as the Lichfield Festival". 9 June 2016. Retrieved 8 September 2020.
43. "Train Honour For Watford Junction Legend Vic Hall". London Northwestern Railway. Retrieved 21 August 2019.
44. "Train named after former England Manager". BBC News. 2 June 2017. Archived from the original on 6 June 2017. Retrieved 2 June 2017.
45. "Train operators get into sprit of Eurovision". Railways Illustrated. No. 245. July 2023. p. 11.
46. "Damaged 350s return to Germany". Rail Magazine. No. 507. 16 February 2005. p. 28.
47. "Woman dies in fire on Northampton to London train". BBC News. 11 April 2011.
48. Ikonen, Charlotte (16 September 2016). "Hundreds rescued after train derails at Hunton Bridge, near Watford Junction". Watford Observer. Newsquest. Archived from the original on 17 September 2016. Retrieved 16 September 2016.
49. "Derailment due to a landslip, and subsequent collision, Watford, 16 September 2016" (PDF). Rail Accident Investigation Branch. Archived (PDF) from the original on 10 August 2017. Retrieved 10 August 2017.
50. "Derailed Watford Junction train heading to Germany for assessment". Watford Observer. 10 November 2016. Archived from the original on 11 November 2016. Retrieved 10 November 2016.
51. "Damaged Desiros". Rail Express. No. 260. January 2018. p. 9.

Further reading

• "London Midland 110mph Class 350s ready for the off". RAIL. No. 710. Peterborough: Bauer. 28 November – 11 December 2012. p. 9. ISSN 0953-4563. OCLC 49953699.

• British Rail electric multiple units
• Siemens multiple units
• Train-related introductions in 2005
• 750 V DC multiple units
• 25 kV AC multiple units