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Cookie Policy

Sources for the facts on this page
  1. What a cookie is; browsers can delete all, block all or block only third-party cookies, and clear cookies on closing; Google Analytics opt-out and Your Online Choices as tools: Information Commissioner's Office (ICO), "Cookies" https://ico.org.uk/for-the-public/online/cookies/
  2. Cookies let a website recognise a device and remember preferences; storage technologies other than cookies are covered too; essential (strictly necessary) cookies vs cookies that need consent; session/persistent and first/third-party distinctions: ICO, "Cookies and similar technologies" https://ico.org.uk/for-organisations/direct-marketing-and-privacy-and-electronic-communications/guide-to-pecr/cookies-and-similar-technologies/
  3. Google Analytics 4 cookies _ga ("used to distinguish users", 2 years) and _ga_<container-id> ("used to persist session state", 2 years): Google Analytics Help, "Google Analytics cookie usage on websites" https://support.google.com/analytics/answer/11397207
  4. Google Analytics opt-out browser add-on (Chrome, Safari, Firefox, Edge): Google https://tools.google.com/dlpage/gaoptout
  5. YouTube privacy-enhanced mode: views are not used to personalise the YouTube experience; tracking can apply after clicking out of the embed: YouTube Help, "Embed videos & playlists" https://support.google.com/youtube/answer/171780
  6. Browser help pages (each opened and checked, Oct 2026): Chrome https://support.google.com/chrome/answer/95647 · Edge https://support.microsoft.com/en-us/microsoft-edge/delete-cookies-in-microsoft-edge-63947406-40ac-c3b8-57b9-2a946a29ae09 · Safari on Mac https://support.apple.com/guide/safari/manage-cookies-sfri11471/mac · Safari on iPhone https://support.apple.com/en-us/105082 · Firefox https://support.mozilla.org/en-US/kb/clear-cookies-and-site-data-firefox (linked from the ICO "Cookies" page; Mozilla's bot check blocked an automated fetch, so click it once before go-live)
  7. Your Online Choices (EDAA), interest-based advertising opt-out: https://www.youronlinechoices.com/uk/