Class 450/1 Four-Coach
| 2002 |
| 127. 28 units being converted to standard class 'high capacity' units for Windsor Line suburban duties 2007-2008 |
| 246 Standard, 24 First |
| Yes |
| Portsmouth and Southampton routes. Most outer Suburban routes and Windsor Line Suburban routes |
| Two per unit |
| One accessible toilet, plus on-train wheelchair ramp |
| Audible and visual announcements given |
|