The prototype was joined by another 20 two-car units which formed the Class 141 fleet.

The Class 4000 fleet entered service on 29 September 2011.

Tables are also removed, to ensure consistency with the rest of the Class 321 fleet.

The entire Class 365 fleet is now used on the Great Northern routes.

During the late 1990s, it was almost certain that the entire Class 58 fleet would see in the next millennium as working locomotives.

Therefore, for the first time, the entire Class 317 fleet was operating in the same place.

If the new interior gets a positive reaction the full Class 317 fleet could be refurbished by the end of 2017.

Most of the timber trains are now operated using their Class 56 or Class 66 fleet.

This was because at the time, the Class 86 fleet was suffering from reliability problems.

Consequently, the use of the Class 86 fleet was decreased, which subsequently allowed reliability to improve.