|Builder:||BR Derby & Crewe|
|Engine:||Sulzer 12LD28B diesel|
|Power:||2, 500 hp (1, 864 kW)|
Design wise the Peaks shared some of their appearance with the LMS 10000 prototype diesel-electrics and North American practice with their bonnet noses - though the bonnets were noticably shorter than the English Electric Class 40 and Class 37. The large grills on the side of the locomotive were intended to try and produce a cleaner design and hide the many apertures that had appeared on earlier and contemporary locomotive designs .
The Class 45 consisted of 2 sub-types, the 45/0 with steam train heating and the 45/1 with electric train heating. The arrival of the High Speed Train in the 1980s displaced them from express work though they continued on secondary passenger services and freights into the late 1980s. They were finally withdrawn by 1989 outlasting the other Peaks by a few years. Eleven have been preserved though not all currently are in working order.
|45 060 at Kidderminster SVR|
|45 041 at Chinnor|
|45 140 at Birmingham New Street (K Davies Collection)|
|Front view of 45 041|
|Side view of 45 041 at Princes Risborough showing the large bogie|
 Brian Haresnape, Production Diesel-Electrics Types 4 and 5 (Ian Allan, 1984) p. 31
 David Lawrence, British Rail Designed 1948-97 (Ian Allan, 2016) p. 116