British Rail Class 91

British Rail Class 91
91130 at York railway station
Type and origin Power type Electric Builder BREL Build date 1988–1991 Total produced 31
Specifications Configuration: ​  • Whyte Bo-Bo  • UIC Bo'Bo' Gauge 1,435 mm (4 ft 8 1⁄2 in) standard gauge Length 63 ft 8 in (19.41 m) Loco weight 84 tonnes (83 long tons; 93 short tons) Electric system/s 25 kV AC Current pickup(s) Pantograph Loco brake Air Train brakes Air
Performance figures Maximum speed Design: 140 mph (225 km/h)[1] Service: 125 mph (201 km/h)[1] No. 2 cab leading: 110 mph (177 km/h) As light locomotive: 75 mph (121 km/h)[note 1] Brakeforce 45 long tons-force (450 kN)
Career Operators British Rail GNER National Express East Coast Virgin Trains East Coast London North Eastern Railway Numbers 91001–91031; later 91101–91122, 91124-91132 Disposition In service: 12 Stored: 6 Scrapped: 12 Preserved: 1

The British Rail Class 91 is a class of 140 mph, 6,300 hp electric locomotives ordered specifically for the East Coast Main Line modernisation and electrification programme of the late 1980s. Built to replace the previous British Rail Class 43 (also called the InterCity 125) and British Rail Class 55, the Class 91s were given the auxiliary name of InterCity 225 to indicate their status as a new version of the 125 and their envisaged top speed of 225 km/h (140 mph). The other end of the InterCity 225 train set is formed of a Driving Van Trailer, built with a similar bodyshell to the Class 91 locomotives.

1. ↑ ^{1.0 1.1 1.2} Fawcett, M. (April 2008). Vehicle Diagram Book - Class 91 Locomotive (1 ed.). London: HSBC Rail UK. EV/DB0910. Archived from the original on 6 May 2021. Retrieved 6 May 2021.