Rolling stock › In serviceData updated
Class 484 unverified
Former District line D78 Stock cars rebuilt by Vivarail as two-car trains for the Isle of Wight's Island Line. They replaced the 1938 Stock Class 483s in 2021.
- Type
- Electric multiple unit
- Builder
- Metro-Cammell, Birmingham (as London Underground D78 Stock); rebuilt by Vivarail, Long Marston
- Built
- 1978–1981 (as D78 Stock); rebuilt 2020–2021
- In service
- since 2021
- Operators
- South Western Railway
- Formation
- 2 cars
- Trains in fleet
- 5
- Fleets
- South Western Railway: 5
- Power
- DC third rail
- Car height
- 3.63 m
- Car width
- 2.84 m
- Status
- In service on the Island Line since 1 November 2021: five units.
This page is marked unverified: its figures haven’t yet been confirmed by an official source or a published history. The foot of the page says what’s in doubt.
Car types
| Code | Car | Length | Doors per side |
|---|---|---|---|
| DM | Driving motor car (both cars of a unit) | 18.652 m |
Sources
- Class 484: a newer fleet for Island Line, South Western Railway, accessed 6 October 2026 (five trains; former London Underground trains refurbished by Vivarail at Long Marston; replaced the Class 483s)
- First Island Line train sets off as transformed railway re-opens, Vivarail, November 2021 (first passenger train on 1 November 2021, Ryde St John's Road)
- Class 484: trains for the Isle of Wight, Vivarail, September 2019 (chosen in 2019; two-car, third-rail, ex-London Underground)
- First Vivarail Island Line train delivered, Rail, 2 December 2020 (issue 919) (first unit delivered 19 November 2020; ex-District line; five two-car trains)
- Rolling Stock Information Sheets (4th edition), Transport for London (released under FOI-0237-2223) (D78 Stock: built by Metro-Cammell 1978-1981; driving motor car length, width, height, door opening)
- FOI2025/000335: stock lists of train fleet (reply and 'SWR Fleet Vehicle Numbers' spreadsheet), South Western Railway (released under FOI via WhatDoTheyKnow), 17 June 2025 (unit and car numbers)
- British Rail Class 484, Wikipedia, accessed 6 October 2026 (length over couplers; 750 V DC)
- 484002 Arrives Shanklin, Wikimedia Commons (CC BY-SA 4.0), 2022-05-12 (Island Line's livery on a Class 484)
unverified dimensions are the D78 Stock driving motor car's (TfL: 18,372 mm over body ends, 2,840 mm wide, 3,630 mm high); that the rebuild kept them unchanged isn't confirmed. The 18.652 m over couplers is Wikipedia's, car designations: the FOI list numbers the cars 131-135 and 231-235; their official type codes weren't found, doors: the D78 had single-leaf sliding doors (1,127 mm opening, TfL); the door count after rebuilding isn't confirmed. Copy from the site's D78 record once checked, supply voltage: Wikipedia gives 750 V DC, seats and top speed: not found outside Wikipedia