Class 252 was the classification allocated to the prototype High Speed Train (HST) unit, numbered 252001.
Class 252 at Weston-super-Mare in 1975
Class 252 at Reading in 1975
One of the first Mark 3 carriages No:E12000 to be delivered to the Railway Technical Centre, Derby in 1972
British Rail Class 41 (HST)
The British Rail Class 41 were two powercars built in 1972 by British Rail Engineering Limited's Crewe Works to operate with the prototype High Speed Train (HST) with Mark 3 carriages.
41001 at the Railway Technical Centre in 1972
41001 front view
41001 rear/side view