| Location | Planned | Expected |
|---|---|---|
| Moorgate | 00:12 | On time |
| Old Street | 00:15 | On time |
| Essex Road | 00:18 | On time |
| Highbury & Islington | 00:20 | 00:22 |
| Drayton Park | 00:23 | On time |
| Finsbury Park | 00:34 | On time |
| Harringay | 00:37 | On time |
| Hornsey | 00:39 | On time |
| Alexandra Palace | 00:42 | On time |
| Bowes Park | 00:45 | On time |
| Palmers Green | 00:47 | On time |
| Winchmore Hill | 00:50 | On time |
| Grange Park | 00:52 | On time |
| Enfield Chase | 00:54 | On time |
| Gordon Hill | 00:56 | On time |
| Crews Hill | 00:59 | On time |
| Cuffley | 01:02 | On time |
| Bayford | 01:06 | On time |
| Hertford North | 01:10 | On time |
| Watton-at-Stone | 01:16 | On time |
| Stevenage | 01:24 | On time |
| Hitchin | 01:32 | 01:29 |
| Letchworth Garden City | 01:37 | On time |