| Train | Operator | Livery | Status |
| 139012 | Very Light Rail National Innovation Centre | Turquoise | |
| 150005 | Northern | Northern White & Blue | Formed of 150117 & 52223 (ex 150223), at Wolverton |
| 150107 | Northern | Northern White & Blue | At Wolverton |
| 150110 | Northern | Northern White & Blue | At Wolverton |
| 150218 | Northern | Northern White & Blue | Fire damaged, under repair |
| 150219 | Great Western Railway | Great Western Railway (Revised) | Back at Wolverton |
| 150232 | Great Western Railway | Great Western Railway (Revised) | At Wolverton |
| 150238 | Great Western Railway | Great Western Railway (Revised) | |
| 150275 | Northern | Northern White & Blue | At Long Marston |
| 153312 | Transport for Wales | Transport for Wales | At Landore |
| 153327 | Transport for Wales | Transport for Wales | At Crewe, to be coupled with 153568 as Active Travel Set AT06 |
| 153568 | Transport for Wales | Transport for Wales Active Travel | Being converted to 'active travel' bike train, to be coupled with 153327 as Active Travel Set AT06. Ex 153368/153968 |
| 155346 | Northern | Northern White & Blue | At Long Marston |
| 156484 | Northern | Northern White & Blue | At Wolverton |
| 156491 | Northern | Northern White & Blue | At Wolverton |
| 158824 | Transport for Wales | Transport for Wales | Collided with 158841 at Talerddig 21/10/24 |
| 158841 | Transport for Wales | Transport for Wales | Collided with 158824 at Talerddig 21/10/24 |
| 158864 | East Midlands Railway | East Midlands Trains White | Struck fallen tree 27/9/24 |
| 158866 | East Midlands Railway | East Midlands Railway | Under refurbishment at Bristol Barton Hill |
| 158906 | Northern | Northern White & Blue | At Crewe for repair/overhaul |
| 165003 | Chiltern Railways | Chiltern Railways | Stored in Aylesbury Depot since 04/24, parts used to repair 165025 |
| 165011 | Chiltern Railways | Chiltern Railways | At Doncaster Works |
| 165024 | Chiltern Railways | Chiltern Railways | Formed of 58874, 55409 (165034) & 58851 (165018), stored at Banbury Depot |
| 165130 | Great Western Railway | Great Western Railway Green | At St. Philip's Marsh, awaiting components |
| 168004 | Chiltern Railways | Chiltern Railways Revised | Under refurbishment at Crewe |
| 168107 | Chiltern Railways | Chiltern Railways Mainline | |
| 168218 | Chiltern Railways | Chiltern Railways Revised | Under refurbishment at Crewe |
| 168329 | Chiltern Railways | Chiltern Railways Mainline | Ex 170309/170399 - In Aylesbury Depot |
| 170103 | CrossCountry | CrossCountry Revised Pride | |
| 170504 | East Midlands Railway | East Midlands Railway | Under refurbishment at Crewe |
| 175007 | Great Western Railway | Transport for Wales | At Laira |
| 175114 | Great Western Railway | Transport for Wales | At Laira |
| 195104 | Northern | Northern White & Blue | Derailed at Grange-over-Sands 22/3/24 |
| 196009 | West Midlands Trains | West Midlands Railway | To be used on EWR |
| 196010 | West Midlands Trains | West Midlands Railway | To be used on EWR |
| 196011 | West Midlands Trains | West Midlands Railway | To be used on EWR |
| 196012 | West Midlands Trains | West Midlands Railway | To be used on EWR |
| 197110 | Transport for Wales | Transport for Wales | |
| 220033 | CrossCountry | CrossCountry | Undergoing refurbishment at Derby |
| 323243 | Northern | Northern White & Blue | WMR interior |
| 331013 | Northern | Northern White & Blue | At Derby |
| 333005 | Northern | Northern White & Blue | TrainFX PIS |
| 334004 | ScotRail | ScotRail Saltire | At Wolverton Works for refurbishment |
| 350233 | West Midlands Trains | London Midland | Flood damaged at Northampton; formed including 61546 (ex 350246) |
| 357030 | c2c | c2c | At Ilford for repaint |
| 357040 | c2c | c2c | At Ilford for repaint |
| 360107 | East Midlands Railway | EMR Connect Luton Airport Express | Under refurbishment at Northampton |
| 373999 | Eurostar | Eurostar | Spare Powercar |
| 378201 | London Overground | London Overground (new version) | At Widnes |
| 378208 | London Overground | London Overground (new version) | At Widnes |
| 378228 | London Overground | London Overground (new version) | At Widnes |
| 378231 | London Overground | London Overground (new version) | |
| 379003 | Great Northern | National Express White | At Hornsey EMUD |
| 379004 | Great Northern | National Express White | At Hornsey EMUD |
| 379005 | Great Northern | National Express White | At Hornsey EMUD |
| 379008 | Great Northern | National Express White | At Hornsey EMUD |
| 379018 | Great Northern | National Express White | At Hornsey EMUD |
| 379019 | Great Northern | National Express White | At Hornsey EMUD |
| 379021 | Great Northern | National Express White | At Hornsey EMUD |
| 387101 | Great Northern | White with Green Doors (Great Northern) | Fitted with ETCS equipment |
| 387107 | Great Northern | White with Green Doors (Great Northern) | Under repair |
| 395008 | Southeastern | Southeastern Blue | Derailed at Ramsgate |
| 455708 | South Western Railway | South West Trains Red | At Bournemouth |
| 455750 | South Western Railway | South West Trains Red | Ex 455743, at Bournemouth |
| 465005 | Southeastern | Southeastern White/Blue | |
| 465908 | Southeastern | Network SouthEast | At Derby |
| 720568 | Greater Anglia | Greater Anglia | At Derby |
| 777004 | Merseyrail | Merseyrail | |
| 769452 | Northern | Transport for Wales (debranded) | Converted from 319452 |
| 769456 | Northern | Northern | Converted from 319456, at Kilmarnock for C4/C6 overhaul |
| 769922 | Porterbrook | Blue | Converted from 319422 |
80 | Docklands Light Railway | DLR Red/Blue | |
3053 | Manchester Metrolink | Manchester Metrolink Silver/Yellow | Under repair after collision with bus |
| 12621 | Chiltern Railways | Chiltern Railways Mainline | Spare MK3 |
| 12214 | LNER | LNER InterCity | Spare MK4 TSOE |
| 82215 | LNER | LNER InterCity | Spare DVT |
| HD02 | Transport For Wales | Ex VTEC | Formed TSOE 12219, TSD 12304, RSB 10305, FOD 11324, TSO 12447, DVT 82220 |
| HD08 | Transport For Wales | Ex VTEC | Formed TSOE 12215, TSD 12308, RSB 10328, FOD 11316, TSO 12526; Spare Set |
| 10307 | Transport For Wales | Ex VTEC | Spare RSB |
| 12229 | Transport For Wales | Ex VTEC | Spare TSOE |
| 82204 | Transport For Wales | Ex VTEC | Spare DVT |
| 82206 | Transport For Wales | Ex VTEC | Parts Donor |
| 82220 | Transport For Wales | Transport For Wales | With HD02, Previously Spare DVT, now replacing 82229 |
| 82229 | Transport For Wales | Transport For Wales | Was with HD02, now Spare DVT following collision |
| CH02 | Chiltern Railways | Grey | Formed 11502, 12704, 12705, 12706, 12814 - At Eastleigh; Driving Trailer 12802 at Long Marston |
| CH05 | Chiltern Railways | Grey | Formed 11505, 12713, 12714, 12715, 12805 - At Eastleigh |