Type 2 Diesels
| Class | Introduced | Manufacturer | Power Unit | Horse Power | Wheels | Transmission | Number Range | Number | Multiple | Thumbnail |
|---|---|---|---|---|---|---|---|---|---|---|
| 21 | 1958 | North British Locomotive Company, Glasgow | MAN L12V18/21S | 1100 | Bo-Bo | Electric | D6100-D6157 | 58 | Red Circle |  |
| 22 | 1959 | North British Locomotive Company, Glasgow | MAN L12V18/21A | 1000 | B-B | Hydraulic | D6300-D6357 | 58 | Orange Square |  |
| 23 | 1959 | English Electric Vulcan Foundry | Napier T9-29 Deltic | 1100 | Bo-Bo | Electric | D5900-D5909 | 10 | Blue Star |  |
| 24 | 1958 | British Railways | Sulzer 6LDA28A | 1160 | Bo-Bo | Electric | D5000-D5150 | 151 | Blue Star |  |
| 25 | 1961 | British Railways | Sulzer 6LDA28B | 1250 | Bo-Bo | Electric | D5151-D5299, D7500-D7677 | 327 |  |
|
| 26 | 1958 | Birmingham Railway Carriage & Wagon Company | Sulzer 6LDA28A | 1160 | Bo-Bo | Electric | D5300-D5346 | 47 | Blue Star |  |
| 27 | 1961 | Birmingham Railway Carriage & Wagon Company | Sulzer 6LDA28B | 1250 | Bo-Bo | Electric | D5347-D5415 | 69 |  |
|
| 28 | 1958 | Metropolitan Vickers | Crossley HST V8 | 1200 | Co-Bo | Electric | D5700-D5719 | 20 | RC |  |
| 29 | 1965 | North British Locomotive Company, Glasgow | Paxman 12YJXL | 1350 | Bo-Bo | Electric | from D6100-D6137 | 20 |  |
|
| 30 | 1957 | Brush Traction, Loughborough | Mirrlees JVS12T | 1250 | A1A-A1A | Electric | D5500-D5699, D5800-D5862 | 263 |  |
|
| 31 | 1965 | Brush Traction, Loughborough | English Electric 12SVT | 1470 | A1A-A1A | Electric | D5500-D5862 | 263 |  |