British Rail Class 331

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British Rail Class 331 Civity
Class331 photo.jpg
331101 in the CAF factory at Zaragoza
In service From 2018
Manufacturer CAF
Built at Zaragoza, Spain[1]
Family name Civity
Replaced Class 321
Class 322
Class 323
Constructed 2017–
Number under construction 43 units to be built
Formation 31 x 3-car units
12 x 4-car units
Fleet numbers 331001–331031 (331/0)
331101–331112 (331/1)
Capacity 204 seats (331/0)
284 seats (331/1)[2]
Operator(s) Northern
Train length 71.4 m (234 ft 3 in) (331/0)
94.75 m (310 ft 10 in) (331/1)
Maximum speed 160 km/h (100 mph)
Track gauge 1,435 mm (4 ft 8 12 in) standard gauge

The Class 331[3] is a class of electric multiple unit being constructed for Northern by Spanish rolling stock manufacturer CAF. A total of 43 units are to be built: 31 three-car units and 12 four-car units.

Construction started in July 2017 and the trains will be phased into service between December 2018 and December 2019.


The announcement of new trains was made by Arriva UK Trains when it was confirmed that they would become the next operator of the Northern franchise from 1 April 2016.[4]

In early 2016 it was confirmed that Spanish rolling stock manufacturer CAF would construct the new electric trains which are planned to operate in West Yorkshire, replacing Class 321 and Class 322 trains and working alongside the current fleet of Class 333 units. The 331s will also be deployed on electrified services from Manchester Airport to Preston and Blackpool North.[5] They will replace the Class 323 units which currently run on Manchester Piccadilly station local services, which are due to return to Porterbrook at the end of their current lease in 2018.[6][7][8][9]

Construction started in July 2017,[10] with the first completed unit being unveiled on 31 January 2018.[11] The first set will arrive in the UK from spring 2018, and the new stock will be phased into service between December 2018 and December 2019.[10]

Fleet details[edit]

Class Operator No. Built Year Built Cars per Unit Unit nos.
Class 331/0 Northern 31 2017- 3 331001–331031
Class 331/1 12 4 331101–331112

See also[edit]