British Rail Train-Crew Manual - Class 81, 85, 86, 
87 Locomotives - Drivers General Information & Driving Instructions.
Issue Date June 1985  -   BR 
33056/102 Issue 1 - Supersedes BR. 33056/40 Part 1.
More information can be found here 
Wikipedia - BR Class 81  - 
Wikipedia - BR Class 85  - 
Wikipedia - BR Class 86  - 
Wikipedia - BR Class 87  
Information relating to privately owned AC Locomotives can be found 
here -  
The A C Loco Group & 
Electric Traction Ltd.