British Rail Class 121 - Fleet Details

Fleet Details

Class Operator No. in Service Year Built Cars per Set Unit nos. Notes
Class 121 Arriva Trains Wales 1 1960 1 121032
Chiltern Railways 2 121020, 121034
Network Rail 8 121021/022, 121024/025,
121027/028, 121030/031
Reclassified as Class 960

Remarkably, considering the age of the fleet, the oldest unit (55020) is still in daily service, whilst the youngest vehicle (55035) was the first to be dismantled. As of early April 2011, 55021 (960021) and 55030 (960013) have also been dismantled. This could change in the future, due to the former Severn Tunnel Emergency Train sets are being stripped for spares at Cardiff to keep 55032 running.

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