English Electric Type 2 (Class 24) Locomotives.
 Drivers Standard Preparation and Disposal Duties for Type 2 Diesel Electric Locomotives BR Sulzer 1160 H.P. Nos D5000 - Onwards
Issued April 1961   -   BR33003/221.

More information can be found here Wikipedia - BR Class 24  -  Derby Sulzers Website -  Preserved-Diesels Website