- 1961
Com-Eng built RM2014 & 2015 entered service.
- 1966
Clyde DEL1493 entered service.
- 1967
Clyde DEL1733 entered service.
- 1969
Walkers-built DH25 entered service.
Researched and compiled by Peter Burkitt, with later additions as sourced. About this list, abbreviations and the full calendar