Allocation of Numbers
Class 97 numbers were allocated in one of three ways:
- Application of 97 prefix to pre-TOPS number - e.g. Western Region shunters PWM 650–654 became 97650–97654.
- TOPS class number replaced by 97 prefix - e.g. Former Class 47 locomotive 47472 became 97472.
- Allocation of number in a series commencing from 97x01, where x represented the engine power Type (1 to 5), '7' for ex-multiple unit conversions and '8' for diesel shunters.
Read more about this topic: British Rail Class 97
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