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Bus route U9

Transport
U9
Usually an Alexander Dennis Adl Enviro 200 Mmc.

73% on timeof departures in the week ending 17 October 2026, leaving no more than 2.5 minutes early or 5 minutes late. Half of London's timetabled routes managed 73% or better.

The last week, day by day
Share of departures leaving on time.

Watch a day of route U9’s buses: every bus, replayed on the map. Or click a day on the chart.

The weekly figures

The share of departures that left on time.

Week endingUxbridge StationHarefield Hospital
21 Jun 2025no datano data
28 Jun 202564%97%
5 Jul 202546% thin83% thin
12 Jul 202571% thin97% thin
19 Jul 202557%86%
26 Jul 202561%96%
2 Aug 202561%98%
9 Aug 202564%96%
16 Aug 202563%94%
23 Aug 202549%93%
30 Aug 202542%99%
6 Sept 202552%85%
13 Sept 202557%75%
20 Sept 202541%75%
27 Sept 202545%86%
4 Oct 202539%75%
11 Oct 202532%79%
18 Oct 202555%79%
25 Oct 202563%93%
1 Nov 202557%87%
8 Nov 202567%92%
15 Nov 202542% thin84% thin
22 Nov 202549% thin85% thin
29 Nov 202544%89%
6 Dec 202544%58%
13 Dec 202547%69%
20 Dec 202540%66%
27 Dec 202556% thin97% thin
3 Jan 202663%94%
10 Jan 202659%90%
17 Jan 202648%84%
24 Jan 202637%82%
31 Jan 202647%79%
7 Feb 202656%95%
14 Feb 202647%74%
21 Feb 2026no datano data
28 Feb 2026no datano data
7 Mar 202654%90%
14 Mar 202654%88%
21 Mar 202643%81%
28 Mar 202660%87%
4 Apr 202661%97%
11 Apr 202666%97%
18 Apr 202650%90%
25 Apr 202644% thin78% thin
2 May 202648%75%
9 May 202660%88%
16 May 202639%80%
23 May 202637%73%
30 May 202647%87%
6 Jun 202648%76%
13 Jun 202664%93%
20 Jun 202645%86%
27 Jun 202670%98%
4 Jul 2026no datano data
11 Jul 202666%80%
18 Jul 202660%91%
25 Jul 202642%86%
1 Aug 2026no datano data
8 Aug 2026no datano data
15 Aug 2026no datano data
22 Aug 2026no datano data
29 Aug 2026no datano data
5 Sept 202663%87%
12 Sept 202647%77%
19 Sept 202637%75%
26 Sept 202657%92%
3 Oct 202625%82%
10 Oct 202661%83%
17 Oct 202655%91%

A passenger going by the timetable at Uxbridge Station would find about four departures in ten leaving more than 2.5 minutes early or 5 minutes late.

Uxbridge Station
On time
55%
Cut short
0.0%
Harefield Hospital
On time
91%
Cut short
0.0%

69 minutes was the longest gap between buses this week, at Colnedale Road towards Harefield Hospital, on Sunday 11 October from 18:46 to 19:55. This excludes any gaps caused by holes in our own data. Watch it happen →

Journeys cut short

Last week: 0.7% of journeys were turned back before the end of the line in the week ending 17 October 2026. Everyone on board has to get off; for anyone waiting further along the route it's effectively a cancellation.

towards Belmont Road

Last week, none of 220 journeys was turned short.

towards Harefield Hospital

Last week, 3 of 224 journeys (1%) were turned short.

  • Dunster Close2.4 km short of the end 1
  • Harefield Library2.7 km short of the end 1
  • Harefield West / Belfry Avenue1.6 km short of the end 1

Each place is the last stop the bus was timed at before it turned round, with the typical distance it fell short of the end of the line. The five busiest are named; the rest are counted together.

Compared with TfL's own figures

QuarterTfLOurs
2025/26 Q313 Sept – 2 Jan 202687% on timeno figure
2026/27 Q11 Apr – 26 Jun 202687% on timeno figure

TfL's figures come from its own tracking equipment and its own timetable; mine are computed from the buses' public position feed. They are the same calculation on independent data, so they should broadly agree and move together rather than match exactly.

About this data
Data collected, week ending 17 October 2026
100% of the week. This is the share of the week for which we hold bus location data at all, across the whole of London rather than for this route. A week under 60% is not published; under 90% it is marked as thin.
Departures observed
  • Uxbridge Station: 203 departures seen
  • Harefield Hospital: 196 departures seen
A guide to how much evidence sits behind this week's figures, not a measure of the service.
How it is measured
Every day, 05:00–23:59. On time means leaving no more than 2.5 minutes early or 5 minutes late. A day with less than four hours of data collected shows no daily figure. How these figures are made.
Gaps in the record for this period (39)

Most recent first. Hover a week on the chart and it will name the gap behind it. Most are a few missing hours on an otherwise ordinary day.

  • 17 Sept 2026 partial day, no data 12:00-12:59: our collector was down (machine off or power cut)
  • 28 Aug 2026 partial day, no data 20:00-23:59: our collector was down (machine off or power cut)
  • 29 Jul – 26 Aug 2026 no collection: the volunteer BODS archive was down and our own collector had not yet started
  • 28 Jul 2026 partial day, no data 11:00-23:59: no collection: the volunteer BODS archive was down and our own collector had not yet started
  • 7 Jul 2026 partial day, no data 15:00-15:59: gap in the volunteer BODS archive (its collector was down)
  • 5 Jul 2026 partial day, no data 06:00-11:59: gap in the volunteer BODS archive (its collector was down)
  • 4 Jul 2026 partial day, no data 06:00-21:59: gap in the volunteer BODS archive (its collector was down)
  • 2 Jul – 3 Jul 2026 gap in the volunteer BODS archive (its collector was down)
  • 8 Jun 2026 partial day, no data 07:00-08:59: gap in the volunteer BODS archive (its collector was down)
  • 7 Jun 2026 partial day, no data 12:00-12:59, 18:00-19:59: gap in the volunteer BODS archive (its collector was down)
  • 6 Jun 2026 partial day, no data 12:00-12:59, 16:00-16:59, 18:00-18:59: gap in the volunteer BODS archive (its collector was down)
  • 27 Apr 2026 partial day, no data 12:00-12:59: gap in the volunteer BODS archive (its collector was down)
  • 21 Apr 2026 partial day, no data 06:00-11:59: gap in the volunteer BODS archive (its collector was down)
  • 20 Apr 2026 partial day, no data 15:00-23:59: gap in the volunteer BODS archive (its collector was down)
  • 16 Apr 2026 partial day, no data 12:00-15:59: gap in the volunteer BODS archive (its collector was down)
  • 28 Feb 2026 partial day, no data 06:00-18:59: gap in the volunteer BODS archive (its collector was down)
  • 16 Feb – 27 Feb 2026 gap in the volunteer BODS archive (its collector was down)
  • 15 Feb 2026 partial day, no data 16:00-23:59: gap in the volunteer BODS archive (its collector was down)
  • 30 Jan 2026 partial day, no data 20:00-23:59: gap in the volunteer BODS archive (its collector was down)
  • 25 Dec 2025 no bus service on Christmas Day
  • 23 Dec 2025 partial day, no data 06:00-07:59: gap in the volunteer BODS archive (its collector was down)
  • 5 Dec 2025 partial day, no data 06:00-08:59: gap in the volunteer BODS archive (its collector was down)
  • 24 Nov 2025 partial day, no data 17:00-17:59: gap in the volunteer BODS archive (its collector was down)
  • 17 Nov 2025 partial day, no data 06:00-09:59: gap in the volunteer BODS archive (its collector was down)
  • 15 Nov – 16 Nov 2025 no London vehicles in the national feed — TfL's export to BODS was down (the volunteer archive itself was collecting)
  • 14 Nov 2025 partial day, no data 06:00-07:59, 13:00-23:59: gap in the volunteer BODS archive (its collector was down)
  • 31 Oct 2025 partial day, no data 06:00-07:59: gap in the volunteer BODS archive (its collector was down)
  • 17 Oct 2025 partial day, no data 06:00-07:59: gap in the volunteer BODS archive (its collector was down)
  • 10 Oct 2025 partial day, no data 06:00-08:59: gap in the volunteer BODS archive (its collector was down)
  • 3 Oct 2025 partial day, no data 06:00-11:59: gap in the volunteer BODS archive (its collector was down)
  • 19 Sept 2025 partial day, no data 06:00-08:59: gap in the volunteer BODS archive (its collector was down)
  • 5 Sept 2025 partial day, no data 06:00-09:59: gap in the volunteer BODS archive (its collector was down)
  • 1 Aug 2025 partial day, no data 06:00-09:59: gap in the volunteer BODS archive (its collector was down)
  • 18 Jul 2025 partial day, no data 06:00-09:59: gap in the volunteer BODS archive (its collector was down)
  • 8 Jul 2025 partial day, no data 06:00-08:59: gap in the volunteer BODS archive (its collector was down)
  • 6 Jul – 7 Jul 2025 gap in the volunteer BODS archive (its collector was down)
  • 5 Jul 2025 partial day, no data 18:00-23:59: gap in the volunteer BODS archive (its collector was down)
  • 4 Jul 2025 partial day, no data 06:00-14:59: gap in the volunteer BODS archive (its collector was down)
  • 25 Jun 2025 partial day, no data 06:00-11:59: gap in the volunteer BODS archive (its collector was down)

For latest timetable and route information, see TfL's official page.

Contains public sector information licensed under the Open Government Licence v3.0; bus data via the DfT Bus Open Data Service and Transport for London. Figures are computed from observed bus positions, every day, 05:00–23:59. How these figures are made. Bus positions from the Department for Transport’s Bus Open Data Service (BODS); the Department for Transport cannot warrant the accuracy or quality of the data published there. Positions before September 2026 come from the Bus Open Data archive generously built and kept by Open Innovations, with thanks. Route lines and stops: Powered by TfL Open Data. Contains OS data © Crown copyright and database rights 2016. Geomni UK Map data © and database rights [2019]. These pages and the bus replay are built independently from open data: Transport for London, the Department for Transport and the bus operators had no part in making them, and none of them endorses them. Not for planning a journey.