|Engine:||GEC G426 traction motors (25kV AC OHLE)|
|Power:||6, 080 hp (4, 533 kW)|
Unusually the Class 91 is asymmetric with a streamlined cab at one end and a blunt ended one at the other. It can operate fully in either direction though of course usually travels pointy-end first, especially when hauling an express. The blunt end cab is fully operational and indeed the Class 91 can travel at up to 110mp/h this way around. As built the Class 91s were 91/0s but became 91/1s after refurbishment .
They remain on express duties on the ECML though will be replaced by a new generation of high speed trains in the next few years. They are currently operated by LNER, before that Virgin East Coast, East Coast, NX East Coast, GNER and BR Intercity. What happens to them next is currently unknown, although their reliability could be better it is likely they could find further use after being cascaded to other routes.
|91 101 at York|
|Front on with 91 115 at York|
|91 128 in East Coast days at Leeds|
|91 109 at London Kings Cross|
|91 121 at Darlington|
|91 124 at York|
 Gavin Morrison, AC Electric Locomotives (Ian Allan, 2013) p. 80
 Colin J Marsden, Traction Recognition (Ian Allan, 2011) p. 92