Last Checked or Updated
10 September 2026
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D423 | 50023 Howe |
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| Photo: K. Connolly - Birmingham New St. 04/04/1978 |
| Loco Specific Information | |||
| Built By | English Electric at The Vulcan Foundry | ||
| Build Number | EE 3790 / VF D1161 | ||
| To British Rail / To Service | 08.05.1968 / 11.05.1968 | D423 | |
| TOPS Renumbered | Prior 09.12.1973 | 50023 | |
| Time In Service | 22 years, 2 months, 28 days | 8,124 days | |
| Engine Hours | 9,685 | ||
| Nameplate | Howe | Fitted | 17.05.1978 |
| First Noted Working Found | |||
| Works History & Service Working (Before & After) | |||||
| 1 — Crewe Works (1971) | |||||
| 1 | |||||
| Before | |||||
| Works | Light Repair | Entry xx.xx.1971 / Release 26.03.1971 | |||
| After | |||||
| 2 — Crewe Works (1973) | |||||
| 2 | |||||
| Before | |||||
| Works | Intermediate | Entry Prior 21.10.1973 / Release 18.12.1973 | |||
| After | |||||
| 3 — Crewe Works (1976) | |||||
| 3 | |||||
| Before | 19.10.1976 | 1B83 1530 London Paddington - Penzance DH with 31294 between Castle Cary - Exeter St Davids | |||
| Works | Light Repair | Entry 05.12.1976 / Release 18.12.1976 | |||
| After | 24.12.1976 | 1A69 0835 Penzance - London Paddington | |||
| 4 — Doncaster Works (1980) | |||||
| 4 | Before | 21.03.1980 | 1A47 0834 Penzance - London Paddington between Par - Plymouth Failed low coolant | ||
| Works | Refurbishment | Entry 09.04.1980 / Release 10.08.1980 | |||
| After | 03.09.1980 | 1V93 0950 Edinburgh Waverley - Plymouth between York - Plymouth | |||
| 5 — Doncaster Works (1985) | |||||
| 5 | |||||
| Before | 13.10.1984 |
1A03 0150 Fishguard Harbour - London Paddington between Swansea - Reading & Failed. 47158 fwd. | |||
| Works | Intermediate | Entry xx.xx.xxxx / Release 18.02.1985 | |||
| After | 19.02.1985 | 1O86 1400 Leeds - Gatwick Airport between Sheffield - Birmingham New Street | |||
| Last Passenger Duty (PD) / Last Working (LW) | |||
| PD | Sunday | 30.09.1990 | 1O43 17:23 Paignton - Waterloo (Terminated Exeter St Davids) |
| LW | Sunday | 14.10.1990 | 2Z99 15:15 Swindon - Bristol Bath Road |
| Post Service | |||
| Withdrawn from Service | 15.10.1990 | ||
| Condemned (Withdrawn) | 15.10.1990 | ||
| Cut Up | 12.06.1992 | At | C F Booth, Rotherham |
| Identification Markings & Notes |
| First of the class to receive Large logo livery |
| First of the class to receive Nework South East livery along with 50 017 |
| Allocations / Sectors | |||
| Date | Area / Depot | Depot Code | Time Spent at Depot |
| xx.05.1968 | Allocated to London Midland Western Lines | LMWL | |
| xx.06.1968 | Allocated to London Midland Stoke Division | D05 | |
| xx.05.1973 | Allocated to Crewe Diesel | CD | |
| 11.05.1974 | Bristol Bath Road | BR | |
| 08.05.1976 | Reallocated to Laira | LA | |
| 03.1983 | Reallocated to Old Oak Common | OC | |
| 07.1990 | Reallocated to Laira | LA | |
| Sector Code | Sector | ||
| 05.1987 | NXXA | Network SouthEast | |
| 30.09.1988 | NWRA | Network SouthEast - Thames & Chiltern | |
| 12.07.1990 | NWXC | Network SouthEast - West of England Reserve | |
| 13.08.1988 | DCWA | Departmental Western Region | |
| Liveries | |||
| Earliest Noted | Latest Noted | Livery | Notes |
| 08.05.1968 | 09.04.1980 | Original BR Blue | |
| 02.09.1980 | 20.06.1982 | BR Blue Large Logo Grey Roof | |
| 00.09.1984 | BR Blue Large Logo Blue & Black Roof | ||
| 00.09.1984 | BR Blue Large Logo Black Roof | ||
| 00.00.1986 | BR Blue Large Logo Black Roof with Orange Cantrail | ||
| 10.06.1986 | 19.03.1987 | Original Network SouthEast | |
| 00.12.1989 | 03.07.1990 | Revised Network SouthEast (Dark Blue) | |
| Damage / Accidents | |
| Photos | |
| Standard British Rail Blue | Nameplate |
| Photo: | |