marksandspencer.com
Heavy tracking seen
9/100
- 2 tracking companies were seen loading before any choice was made
- No tracking companies were seen after we clicked reject
- 9 cross-site tracking companies were seen after accepting
- Device-fingerprinting techniques seen (webgl, canvas)
- A session-recording service was seen (Contentsquare)
Where the data went
From our checker in London to 11 tracker server locations in 5 countries. Drag to spin.
- Advertising
- Analytics
- Data broker
- Session recording
- Social
- Our checker (London)
Server locations
Tap one to find it on the globe
Companies
Who showed up
- 01GGoogleAd network, analytics and search · Mountain View · servers in Palo Alto, DublinAdvertisingBeforeAfter rejectAfter accept
- 02MMicrosoftAd network and analytics · Redmond · servers in Seattle (South Lake Union)AdvertisingBeforeAfter rejectAfter accept
- 03OOptimizelyA/B testing · New York · servers in London, MontrealAnalyticsBeforeAfter rejectAfter accept
- 04AAdobeMarketing analytics and ad platform · San Jose · servers in Ashburn, DublinData brokerBeforeAfter rejectAfter accept
- 05AAwinAffiliate marketing · Berlin · servers in Seattle (South Lake Union)AdvertisingBeforeAfter rejectAfter accept
- 06CContentsquareSession recording and analytics · Paris · servers in Frankfurt am Main, DublinSession recordingBeforeAfter rejectAfter accept
- 07MMetaSocial network and ad platform · Menlo Park · servers in DublinSocialBeforeAfter rejectAfter accept
- 08PPinterestSocial network and ad platform · San Francisco · servers in Boston, MinneapolisAdvertisingBeforeAfter rejectAfter accept
- 09RRedditSocial network and ad platform · San Francisco · servers in LondonAdvertisingBeforeAfter rejectAfter accept
- 10TTikTokSocial network and ad platform · Singapore · servers in SloughAdvertisingBeforeAfter rejectAfter accept
From our last check on 24 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
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