Chiltern Railways

Chiltern Railways is one of the smaller operators in this archive — 15,505 recorded services from 6 Aug 2026 to 23 Sept 2026, around 316 a day — and it ran 93% of them to within five minutes, ahead of the national figure.

11,197 arrivals were recorded across the window, 10,401 of them within five minutes and 74 more than half an hour late. At this volume a single badly delayed working is worth a visible fraction of a percentage point.

Its week is strongly peaked: 366 services on Wednesday, 9 September 2026 against 196 on Sunday, 9 August 2026, a swing of 1.9 times.

The average delay at destination was 1 minutes. The worst single arrival recorded was 2h 06m behind schedule, Birmingham Snow Hill to London Marylebone on Monday, 17 August 2026.

The day-to-day spread is wide — 25 points between its best day, Wednesday, 16 September 2026 at 99%, and its worst, Friday, 28 August 2026 at 74%.

1,058 services were cancelled, 6.8% of everything booked — above the 2.4% the network cancelled over the same dates. The worst single day was Saturday, 29 August 2026, at 19% of that day's timetable.

Counting those cancellations as failures, the way the industry's own measure does, takes the on-time share from 93% of recorded arrivals to 85% of everything booked whose outcome is known — 8.0 points.

Ranked on on-time share of recorded arrivals against the 30 operators with enough of them to compare, Chiltern Railways comes eighth.

Chiltern Railways in numbers

Every percentage among the bands is of the 11,197 services whose arrival reached the archive, not of all 15,505, and the bands are exclusive. 3,250 ran without an arrival being recorded, and nothing is claimed about those. The row counting cancellations is those same 10,401 on-time arrivals over a denominator that also holds the 1,058 trains that did not run at all. Delay is judged at the destination, a stricter test than the industry's own measure and not comparable with it. The on-time share and the average delay answer different questions.

Day by day

49 archived days, 6 Aug 2026 to 23 Sept 2026, widest bar the busiest, filled to the share that arrived within five minutes. The same days across every operator.

In the daily longest-delay league

Chiltern Railways appears 5 times across 49 archived days, on 3 separate dates in the ten shown. These are appearances in the daily league, not this operator's own worst delays.

Recorded live from the Darwin and TRUST feeds on each of the 49 days above, and aggregated here. CH is this operator's ATOC code. How these figures are measured · All operators · Sources and licences