An InterCity 225 on the East Coast Main Line
The InterCity 225 is an electric high speed train in the United Kingdom, comprising a Class 91 electric locomotive, nine Mark 4 coaches and a Driving Van Trailer (DVT). The Class 91 locomotives were built by British Rail Engineering Limited's Crewe Works as a spin-off from the Advanced Passenger Train project, which was abandoned during the 1980s, whilst the coaches and DVT were constructed by Metro Cammell in Birmingham and Breda (under sub-contract) in Italy, again borrowing heavily from the Advanced Passenger Train. The trains were designed to operate at up to 140 mph (225 km/h) in regular service, but are limited to 125 mph (200 km/h) principally due to a lack of cab signalling and the limitations of the current overhead line equipment. They are used on services from London King's Cross to Newark North Gate, Doncaster, Leeds, Bradford Forster Square, Skipton, York, Newcastle, Edinburgh Waverley and Glasgow Central.
They have also operated on the West Coast Main Line (WCML). In April 1992, one set a record of two hours, eight minutes between Manchester and London Euston, shaving 11 minutes off the 1966 record. In 1993 trials were operated to Liverpool and Manchester in connection with the InterCity 250 project.
The InterCity 225 has a top service speed of 140 mph (225 km/h); during a test run in 1989 on Stoke Bank between Peterborough and Grantham an InterCity 225 reached 162 mph (260.7 km/h). However, except on High Speed 1, which is equipped with cab signalling, British signalling does not allow trains to exceed 125 mph (201 km/h) in regular service, due to the impracticality of correctly observing lineside signals at high speed.
Between 2003 and 2005, HSBC Rail funded with support from GNER, Bombardier Transportation, Alstom and others a complete rebuilding and refurbishment programme for both the Class 91 and Mark 4 coaches, called Project Mallard.
Capacity and Formation
The formation of the InterCity 225 sets is below:- 
- Class 91 Electric Locomotive (North End)
- Coach B - Standard Class - 76 Seats - WC
- Coach C - Standard Class - 76 Seats - WC
- Coach D - Standard Class - 76 Seats - WC
- Coach E - Standard Class - 76 Seats - WC
- Coach F - Standard Class - 72 Seats - Accessible Toilet
- Coach H - Standard Class/Kitchen - 30 Seats - WC
- Coach K - First Class - 43 Seats - WC + 2 Crew Areas
- Coach L - First Class - 40 Seats - Accessible Toilet
- Coach M - First Class - 46 Seats - WC
- Driving Van Trailer (London End)
The total numbers of seats are 406 Standard and 129 First, giving the train an overall capacity of 535 seats.
Although it originally envisaged all InterCity 225 would be withdrawn by 2020, in May 2016 Virgin Trains East Coast was awarded extra paths for London to Edinburgh services that will see a fleet of six to eight trains retained. Grand Central will use InterCity 225s on its London Euston to Blackpool North WCML services but with DB Cargo UK Class 90s instead of Class 91s. Twelve Mark 4 coaches are to be leased by Transport For Wales to replace its Mark 3 coaches on the Premier Service. Grand Union is proposing to operate InterCity 225s on its London Paddington to Cardiff Central services from December 2020.
- thejunction.org.uk, rolling stock: class 91, Retrieved on 04-07-2007
- Oliver Keating, The Inter-city 225, Retrieved on 04-07-2007
- "The Design and Development of the Class 91 Locomotive", P J Donnison and G R West, Main Line Railway Electrification Conference 1989 - Proceedings of the Institute of Electrical Engineers, 1989.
- "The design, manufacture and assembly of the British Rail Class 91, 25 kV 225 km/h locomotive", M L Broom and G W Smart, Proceedings of the Institute of Mechanical Engineers Vol. 205, 1990.
- "Back to the future as history made with east coast rail icons". National Railway Museum. Retrieved 10 January 2018.
- New Record for West Coast Route The Railway Magazine issue 1094 June 1992 page 4
- IC225 in West Coast Tests The Railway Magazine issue 1109 September 1993 page 8
- First LNER Mk4s taken to Worksop for storage Rail issue 880 5 June 2019 page 29
- East Coast Main Line IEP train order confirmed Railway Gazette International 18 July 2013
- VTEC and FirstGroup granted East Coast Main Line paths Railway Gazette International 12 May 2016
- Alliance drops Pendolino plan as Southampton paths identified Railway Gazette International 19 July 2017
- First Class 91 withdrawn from traffic by LNER Rail issue 884 31 July 2019 page 28
- Service Improvements Government of Wales
- Cardiff - London open access plan Railway Gazette International 19 June 2019
- Perren, Brian (October 1988). "Class 91 + Mk 4s = IC225". Rail Magazine. No. 85. EMAP National Publications. pp. 28–34. ISSN 0953-4563. OCLC 49953699.
- Testing the Intercity 225
- Running to Time. Channel 4 documentary about the creation and manufacturing of Intercity 225 (1988)