| Location | Planned | Expected |
|---|---|---|
| Reading | 23:17 | On time |
| Twyford | 23:22 | 23:25 |
| Maidenhead | 23:29 | 23:32 |
| Taplow | 23:32 | 23:34 |
| Burnham | 23:35 | 23:37 |
| Slough | 23:39 | 23:42 |
| Langley | 23:43 | 23:45 |
| Iver | 23:45 | 23:47 |
| West Drayton | 23:48 | 23:51 |
| Hayes & Harlington | 23:52 | 23:55 |
| Southall | 23:56 | 23:59 |
| Ealing Broadway | 00:01 | 00:04 |
| London Paddington | 00:10 | 00:12 |