tfl.gov.uk
Heading to tfl.gov.uk? Heads up: it’ll track you. 7 companies follow visitors from here.
A lot of tracking seen
52/100
- No tracking companies were seen after we clicked reject
- The banner asked visitors to accept 947 ad-industry “partners”
- 7 cross-site tracking companies were seen after accepting
- A session-recording service was seen (Microsoft)
- 1 disguised tracker was seen: a subdomain of this site points at another company’s tracker
Disguised trackers
A subdomain points elsewhere
A name under this site’s domain is a DNS alias (CNAME) for another company’s tracker. The browser treats it as the site itself, and the data goes to the tracker.
- Adobe Experience Cloud (formerly Omniture)smetrics.tfl.gov.uk → tfl.gov.uk.ssl.sc.omtrdc.net
Reported separately. This does not change the A–F grade.
Where the data went
From our checker in London to 9 tracker server locations in 5 countries. Drag to spin.
- Analytics
- Advertising
- Data broker
- Session recording
- Our checker (London)
Server locations
Tap one to find it on the globe
Companies
Who showed up
- 01AAdobeMarketing analytics and ad platform · San Jose · servers in BostonAnalyticsBeforeAfter rejectAfter accept
- 02CCriteoRetargeting ad network · Paris · servers in ParisAdvertisingBeforeAfter rejectAfter accept
- 03IIndex ExchangeAd exchange · Toronto · servers in MontrealAdvertisingBeforeAfter rejectAfter accept
- 04LLiveRampIdentity graph (data broker) · San Francisco · servers in Kansas CityData brokerBeforeAfter rejectAfter accept
- 05MMicrosoftAd network and analytics · Redmond · servers in Zurich, Seattle (South Lake Union)Session recordingBeforeAfter rejectAfter accept
- 06QQuantcastAudience data and ads · San Francisco · servers in AshburnAdvertisingBeforeAfter rejectAfter accept
- 07SSovrnAd exchange · Boulder · servers in DublinAdvertisingBeforeAfter rejectAfter accept
- 08TThe Trade DeskAd buying platform and identity (UID2) · Ventura · servers in Seattle (South Lake Union)AdvertisingBeforeAfter rejectAfter accept
From our last check on 27 Oct 2026 from London: homepage only, three fresh visits (did nothing, clicked reject, clicked accept). Server locations are approximate, from the IP addresses we connected to. Some requests after rejecting may be strictly necessary services; this is what we observed, not proof that the site broke the law. How we check · Run this site? Ask for a re-check or add a statement
Last checked
See this live on every site you visit
Browser Monster shows who’s watching on every page, what you agreed to, and helps you clear it up. It works on your device and never sells your data.
Add to ChromeCheck another site