The British Rail Class 307 electric multiple units were built by BR at Eastleigh Works from 1954 to 1956. They were initially classified as AM7 before the introduction of TOPS.
Class 307 at Wakefield Westgate in 1991
Inside a refurbished unit
Refurbished British Railways Class 307 train showing the special headboard carried at the launch of the first refurbished train.
The front of a refurbished British Railways Class 307 train without the headboard. Part of a Class 315 train can be seen behind.
The British Rail Class 321 is a class of electric multiple unit (EMU) passenger train built by British Rail Engineering Limited's York Carriage Works in three batches between 1988 and 1991 for Network SouthEast and Regional Railways. The class uses alternating current (AC) overhead electrification. The design was successful and led to the development of the similar Class 320 and Class 322.
Greater Anglia Class 321 at Colchester in 2018
Standard-class interior of an unrefurbished Greater Anglia unit
Class 321/4 in Network SouthEast livery at Rugby
Class 321/9 in West Yorkshire Passenger Transport Executive livery at Doncaster