West Midlands Trains 421U20
View line West Midlands Trains
Alerts for train 421U20
Alerts are saved per line, not per trip id, so they keep working when the operator changes the timetable. This train runs on line West Midlands Trains.
The mini-map returns when the train runs
On-time · 30 days
46%
11/24 runs under 3 min
RT coverage: 24 full · 0 partial · 0 no data
On-time · 90 days
36%
27/75 runs under 3 min
RT coverage: 75 full · 0 partial · 0 no data
Typical delay
+3min
Median at arrival, 90 days
30 days: +3 min
P90
+12min
9 in 10 runs arrive with less than this
30 days: +10 min
Last 30 days
Delay at the end of each run, in minutes. One bar per run.
- On time (<3 min)
- 3–10 min
- 10–30 min
- 30+ min
- Partial coverage
- No data
Worst days
- Fri 21 Aug Max en route +48 min · last fix heading to 72268 +48 min
- Wed 7 Oct Max en route +39 min · last fix heading to Harrow & Wealdstone +39 min
- Thu 8 Oct Max en route +22 min · last fix heading to Wembley Central +22 min
- Fri 24 Jul Max en route +20 min · last fix heading to Bletchley +20 min
- Tue 25 Aug Max en route +17 min · last fix heading to 72268 +17 min
Distribution · 90 days
75 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 4% · 3
- On time 32% · 24
- 3–10 min 47% · 35
- 10–30 min 15% · 11
- 30+ min 3% · 2
On-time by weekday
- 54% M n=13
- 38% T n=13
- 31% W n=13
- 17% T n=12
- 23% F n=13
- 55% S n=11
- — S n=0
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Wed 21 Oct | Wembley Central 09:32 | −1 min | +4 min |
| Tue 20 Oct | Harrow & Wealdstone 09:40 | +7 min | +8 min |
| Mon 19 Oct | Harrow & Wealdstone 09:36 | +3 min | +5 min |
| Fri 16 Oct | Wembley Central 09:36 | +3 min | +6 min |
| Thu 15 Oct | Harrow & Wealdstone 09:40 | +7 min | +8 min |
| Wed 14 Oct | Wembley Central 09:33 | 0 min | +1 min |
| Tue 13 Oct | Harrow & Wealdstone 09:35 | +2 min | +5 min |
| Mon 12 Oct | Wembley Central 09:34 | +2 min | +2 min |
| Fri 9 Oct | Wembley Central 09:32 | 0 min | +1 min |
| Thu 8 Oct | Wembley Central 09:55 | +22 min | +22 min |
| Wed 7 Oct | Harrow & Wealdstone 10:12 | +39 min | +39 min |
| Tue 6 Oct | Wembley Central 09:31 | −2 min | +2 min |
| Mon 5 Oct | 72268 09:33 | 0 min | +3 min |
| Sat 3 Oct | 72268 09:31 | −1 min | — |
| Fri 2 Oct | 72268 09:39 | +6 min | +8 min |
| Thu 1 Oct | 72268 09:43 | +11 min | +16 min |
| Wed 30 Sept | 72268 09:38 | +5 min | +12 min |
| Tue 29 Sept | 72268 09:35 | +2 min | +9 min |
| Mon 28 Sept | 72268 09:36 | +3 min | +5 min |
| Sat 26 Sept | 72268 09:34 | +1 min | +5 min |
| Fri 25 Sept | 72268 09:39 | +6 min | +9 min |
| Thu 24 Sept | 72268 09:40 | +7 min | +8 min |
| Wed 23 Sept | 72268 09:36 | +3 min | +6 min |
| Tue 22 Sept | 72268 09:33 | 0 min | +8 min |
| Mon 21 Sept | 72268 09:33 | 0 min | +2 min |
| Sat 19 Sept | 72268 09:38 | +6 min | +7 min |
| Fri 18 Sept | 72268 09:37 | +4 min | +6 min |
| Thu 17 Sept | 72268 09:42 | +8 min | +8 min |
| Wed 16 Sept | 72268 09:42 | +9 min | +9 min |
| Tue 15 Sept | 72268 09:44 | +11 min | +11 min |
Each run is closed into train_runs (country, train number, service day) from the live positions. Final delay = last delay seen. Partial coverage: the feed stopped before the final stop (last value used, hatched in the chart). No data: a run without any valid delay; counts as neither on time nor late. Data collected since 11 July 2026.