Transport for London API on new websites
Open API for London transport lines, stops, journeys and live arrivals.
- Sites using Transport for London API
- 6
- since Jul 2026
- Last 30 days
- 0.0%
-
of new sites, to Oct 23
no change on the 30 days before - Last 7 days
- 0.0%
- of new sites, 7-day average
no change on the week before
| First seen | Jul 22, 2026 |
|---|---|
| Last seen | Sep 27, 2026 |
| Website | api.tfl.gov.uk |
What we found
- Transport for London API appeared on 1 new site in the last 30 days.[1]
Share of new sites using Transport for London API
The line is the 7-day average share of new sites that use Transport for London API, since 10 September.
Data API on new sites
| # | Movement | Tool | Share of category | Bar | |
|---|---|---|---|---|---|
| 1 | – |
|
22.7% | ||
| 2 | ▼1 |
|
6.7% | ||
| 3 | ▲1 |
|
5.4% | ||
| 4 | ▼1 |
|
3.6% | ||
| 5 | ▼1 |
|
3.2% | ||
| 6 | ▲2 |
|
2.8% | ||
| 7 | ▼2 |
|
1.9% | ||
| 8 | ▼2 |
|
1.8% | ||
| 9 | ▼1 |
|
1.8% | ||
| 10 | ▲9 |
|
1.7% | ||
| 11 | ▲7 |
|
1.5% | ||
| 12 | ▼3 |
|
1.5% | ||
| … | |||||
| 334 | ▼34 | Transport for London API | <0.1% | ||
All-time shares across the new sites we track: of all of them, and of the sites using any Data API tool. Among September launches it ranked #238 in Data API, down from #204 in August. All 1539 in Data API
Recently launched products built on Transport for London API
5 of the 6 sites using Transport for London API are product launches we list individually. The other 1 are new business and personal sites: they count towards the figures above but are not listed here. A watch sends them to you.
Watches, exports and the API give you all 6 sites using Transport for London API, from £15 a month.
Notes
- These figures cover websites that went live since April 2026, not the web as a whole.
How this page is made
FirstSited looks at each new website near the day it goes live and records what it was built with. We do not go back later, so these figures describe what sites launch with, not what they run today. A site counts towards Transport for London API when we detect Transport for London API on it at that look.
Every share on this page is a proportion of the new sites we were tracking at the time. Sites we found across the wider web count towards the figures, but only product launches are listed by name. How we detect technologies · How we find new sites