Title: List of British Rail modern traction locomotive classes - Wikipedia
Headings: List of British Rail modern traction locomotive classes
List of British Rail modern traction locomotive classes
Contents
Diesel locomotives
Small shunters: under 300 hp
Large shunters: 300–799hp
Type 1 locomotives: 800 – 1000 hp
Type 2 locomotives: 1001 – 1499hp
Type 3 locomotives: 1500–1999 hp
Type 4 locomotives: 2000–2999 hp
Type 5 locomotives: over 3000 hp
Electric locomotives
DC electric locomotives
AC electric locomotives
Miscellaneous locomotives
Class 99
Builders' demonstrators
Unbuilt locomotives
See also
Footnotes
References
External links

Content: 43
Class 16
D8/2
8/4
D8400-D8409
N/A
1958
10
800 hp
1968

All
Class 17 (Clayton Type 1)
N/A
9/18
D8500-D8587
N/A
1962–65
117
2× 450 hp
1968–71
D8512/21/98 survived at the Derby Research Centre until 1978. 87
9/19
D8588-D8616
All
Class 18 (I)
N/A
N/A
N/A

1985
(Proposed)


Never Built

Never Built
Class 18 (II)
N/A
N/A
N/A

2021 (Planned)
15 (Planned)

Under Construction


Class 19
N/A
N/A
N/A
19001
2018
1
DVT
still in use
Built in 1988 as Mark 3 DVT, rebuild as self-powered vehicle in 2018. 0
Class 20
D10/3
10/3
D8000-199,
D8300-27
20001–20228
1957–68
228
1000 hp
still in use

189 (1 in preservation)
Relation between TOPS, 1948, 1955 and 1962 classes, and 1948, 1957 and TOPS numbers (unless otherwise given): Type 2 locomotives: 1001 – 1499hp
Locomotive class are listed by TOPS class. Locomotives for TOPS classes 24 and 26 have their original sub-classes shown, as each wholly comprised locomotives from a distinct 1962 class. Class 21 (II) has sub-classes shown as these are superficially similar but mechanically different types grouped into a single class. CLASS
1957 numbers
TOPS numbers
Introduced
Quantity
Engine
Withdrawn
Notes
Scrapped
TOPS
1955
1962
Class 21 (I) (NBL)
D10/1
10/4
D6100-D6157
N/A
1958–60
58
1000 hp
1967–68
20 rebuilt to Class 29
All
D11/2
11/4
1100 hp
Class 21 (II)
21/5
N/A
N/A
N/A
21544–21547
2004–05
4
2110 hp
still in use

0
21/6
21610–21611
2006
2
1500 hp
21/9
21901–21910
1991–92
5
1270 hp

2010
2
2016
3
Class 22 (Baby Warship)
D10/2A
10/4A
D6300-D6305
N/A
1959–62
58
1000 hp
1967–72

All
D11/5
11/4A
D6306-D6357
1100 hp
Class 23 (Baby Deltic)
D11/1
11/3
D5900-D5909
N/A
1959
10
1100 hp
1968–71
D5901 survived in departmental use at the Railway Technical Centre until 1975. Class 24
24/0
D11/3
11/1
D5000-D5049
24001–24047
1958–61
50
1160 hp
1967–80
24061 survived in departmental use until 1987
49
24/1
11/1A
D5050-5150
24051–24101
101
98
Class 25
D12/1
12/1
D5151–D5299,
D7500–D7677
25001–25327
1961 -67
323
1250 hp
1984–87

303
Class 26
26/0
D11/4
11/6
D5300-D5319
26001–26046
1958
20
1160 hp
1975–94

13
26/1
N/A
11/6A
D5320-D5346
1958
27
21
Class 27
D12/3
12/6
D5347-D5415
27001–27066
1961–62
69
1250 hp
1987

61
Class 28
D12/1
12/5
D5700-D5719
N/A
1958–59
20
1200 hp
1967–68
D5705 used by the Research Division until 1980. 19
Class 29
N/A
13/4
D6100-03/06-08/12-14/16/19/21/23-24/29-30/32-33/37
N/A
1958–60
Rebuilt 1965–1967
20
1350 hp
1969–71
Rebuilt from Class 21
All
Classes 30 & 31
D13/1, D14/2
14/2
D5500-D5699,
D5800-D5862
31001–31970
1957 -62
263 plus 81
conversions
1,250 bhp or 1,365 bhp
still in use
31128 is still in use.