| Location | Planned | Expected |
|---|---|---|
| London Kings Cross | 16:06 | 16:21 |
| Finsbury Park | 16:12 | 16:28 |
| Alexandra Palace | 16:17 | 16:32 |
| Potters Bar | 16:26 | |
| Hatfield | 16:32 | |
| Welwyn Garden City | 16:40 | |
| Welwyn North | 16:42 | |
| Knebworth | 16:46 | |
| Stevenage | 16:50 | |
| Hitchin | 16:55 | |
| Letchworth Garden City | 17:02 |