|Builder:||English Electric Vulcan Foundry|
|Engine:||4 EE435A traction motors (25kV AC OLHE)|
|Power:||2, 950 hp (2, 200 kW)|
The Class 83s were lighter (three tons less than the Class 82 for example) and less powerful than the other prototype classes though English Electric considered this a virtue as it made them cheaper to build, a quarter of the price of a Deltic! The main weakness of the Class 83 was with their mercury-arc rectifiers which gave a lot of trouble and a time in the late 60s the entire class was put into storage .
In the early 1970s they were restored into service with silicon-diode rectifiers and continued in service until the early 1980s their relative lack of power compared to other electric locomotives saw them surplus to requirements and withdrawals began. A few managed to survive in service until the end of the decade on Euston empty coaching stock duties and even received Intercity livery. One of these 83 012 has been preserved.
|83 013, locations and photographer in all photos unknown|
|83 012 in Intercity livery|
|83 015 looking a bit worse for wear|
 Gavin Morrison, AC Electric Locomotives in Colour (Ian Allan, 2013) p. 13
 Brian Haresnape, Electric Locomotives (Ian Allan, 1983) p. 53