| Vehicle type: | DMSL | DMBSL | TFK | TCL | TBFKL |
| Classification: | 126 | 126 | 126 | 126 | 126 |
| Original classification: | 126/1 | 126/2 | 189 | 189 | 187 |
| Original number range: | 50936, 51008-51029 | 51030-51051 | 59391-59400 | 59402-59412 | 59098-59099 |
| Revised number range: | - | - | - | - | - |
| Introduced: | 1959 | 1959 | 1959 | 1959 | 1959 |
| Built by: | BR Swindon Works | BR Swindon Works | BR Swindon Works | BR Swindon Works | BR Swindon Works |
| Vehicle length (over body): | 64ft 6in | 64ft 6in | 64ft 6in | 64ft 6in | 64ft 6in |
| Height: | 12ft 9 1/2in | 12ft 9 1/2in | 12ft 9 1/2in | 12ft 9 1/2in | 12ft 9 1/2in |
| Width: | 9ft 3in | 9ft 3in | 9ft 3in | 9ft 3in | 9ft 3in |
| Seating: | 64S | 52S | 42F | 18F/32S | 32U (F) |
| Internal layout: | 2+2 | 2+2 | Comp | 2+1F/2+2S | Comp |
| Gangway: | Throughout | Inner end |
Throughout | Throughout | Throughout |
| Toilets: | 1 | 1 | 1 | 1 | 1 |
| Weight: | 38 tons | 38 tons | 32 tons | 30 tons | 33 tons |
| Brake type: | Vacuum | Vacuum | Vacuum | Vacuum | Vacuum |
| Power unit: | 2 x BUT (AEC) of 150hp per vehicle | 2 x BUT (AEC) of 150hp per vehicle | - | - | - |
| Horsepower (total): | 300hp | 300hp | - | - | - |
| Transmission: | Mechanical | Mechanical | - | - | - |
| Max speed: | 70mph | 70mph | 70mph | 70mph | 70mph |
| Coupling type: | Cab - Buck-eye | Buck-eye | Buck-eye | Buck-eye |
Buck-eye |
| Multiple restriction: | White Circle | White Circle | White Circle | White Circle | White Circle |
| Door type: | Slam | Slam | Slam | Slam | Slam |
| Special features: | |||||
| Body structure: | Steel | Steel | Steel | Steel | Steel |
| Notes: |
Last modified 24/04/06