Last Checked or Updated
08 June 2026
Photo: K. Connolly - Crewe Works 15/12/1974
Loco Specific Information
Built By
English Electric at The Vulcan Foundry
Build Number
EE 3795 / VF D1166
To British Rail / To Service
31.05.1968 / 08.06.1968
D425
TOPS Renumbered
15.02.1974
50025
Time In Service
21 years, 2 months, 14 days
7,745 days
Engine Hours
4,137
Nameplate
Invincible
Fitted
06.06.1978
First Noted Working Found
Friday
07 June 1968
Inverness - Edinburgh
R.O. 474 p295
Works History & Service Working (Before & After)
1 — Crewe Works (1971)
1
Before
Works
Light Repair
Entry Prior 14.03.1971 / Release 03.04.1971
After
2 — Crewe Works (1972)
2
Before
Works
Light Repair
Entry Prior 23.04.1972 / Release Prior 11.06.1972
After
3 — Crewe Works (1973)
3
Before
Works
Light Repair
Entry Prior 08.04.1973 / Release Prior 20.05.1973
After
4 — Crewe Works (1974)
4
Before
Works
Intermediate
Entry Prior 19.05.1974 / Release 13.08.1974
After
5 — Crewe Works (1975)
5
Before
Works
Light Repair
Entry Prior 08.06.1975 / Release Prior 20.09.1975
After
6 — Doncaster Works (1979)
6
Before
Works
Intermediate
Entry Prior 10.06.1979 / Release 08.09.1979
After
7 — Doncaster Works (1982)
7
Before
Works
Refurbishment
Entry 08.02.1982 / Release 02.08.1982
After
8 — Laira Depot (1987)
8
Before
Works
Major F Exam
Entry xx.xx.xxxx / Release 23.02.1987
After
Last Passenger Duty (PD) / Last Working (LW)
PD
Sunday
06.08.1989
1F87 21:15 Oxford - Paddington
LW
Sunday
06.08.1989
1F87 21:15 Oxford - Paddington
Post Service
Withdrawn
06.08.1989
Condemned
14.08.1989
Derailment
Cut Up
10.1989
At
Old Oak Common by Vic Berry
Identification Markings & Notes
Allocations / Sectors
Date
Area / Depot
Depot Code
Time Spent at Depot
xx.06.1968
Allocated to London Midland Western Lines
LMWL
xx.06.1968
Allocated to London Midland Stoke Division
D05
x.05.1973
Allocated to Crewe Diesel
CD
04.05.1974
Reallocated to Bristol Bath Road
BR
11.12.1976
Reallocated to Laira
LA
03.1983
Reallocated to Old Oak Common
OC
Sector Code
Sector
05.1987
NXXA
Network SouthEast
30.09.1988
NWRA
Provincial
Liveries
Date From
Livery
Notes
31.05.1968
Standard British Rail Blue
08.1982
Large Logo British Rail Blue, Grey Roof
Network South East Original, Blue, Red, White, Light Grey
Damage / Accidents
06.08.1989
50025 Invincible was heading at high speed with the 21:15 Oxford to Paddington service when it struck a section of rail deliberately laid across the track by vandals.
It derailed and travelled for half a mile, ripping up track before turning on its side. There were no fatalities or serious injuries. 50025 was written off.
Photos
Standard British Rail Blue
Nameplate
Photo: