Cookie policy
A short list of the small cookies we use, what each one does, and how to clear them.
Last updated · May 2026
In short
- This site uses one essential cookie and one anonymous analytics measure. That is all.
- The essential cookie remembers that you have dismissed the cookie banner so we do not show it to you again.
- The analytics measure is first-party, IP-anonymised, and does not follow you elsewhere on the web.
- We do not run any advertising cookies, retargeting pixels, or third-party trackers.
- You can clear cookies in your browser settings at any time.
1. The cookies we set, in full
Essential · first-party · 12 months
arn-cookie-ack-v1
A small string stored in your browser's local storage that remembers you have closed the cookie banner. Set by us, not by any third party. Retention 12 months from your last visit.
Analytics · first-party · 14 months
_arn_session
A first-party session cookie used by our small analytics measure to count unique visits to the site. IP-anonymised. We see aggregate page views by week and broad region. We do not see who you are.
Technical · transient
CDN edge cookie
A short technical cookie set by our hosting provider (Cloudflare Pages) to route your request to the nearest edge server. Expires when you close your browser.
2. What we do not use
For the avoidance of any doubt — we do not run Google Analytics, Facebook Pixel, Hotjar, any retargeting cookie, any advertising network, or any cross-site tracker. The trust has not, ever, paid for digital advertising. We do not intend to.
3. How to clear cookies
You can clear cookies at any time in your browser settings. The Information Commissioner's Office has a useful plain-English guide on how to manage cookies. Clearing the arn-cookie-ack-v1 entry will simply mean the cookie banner reappears next time you visit.
4. Changes to this policy
We review this policy each spring at the trustees' quarterly meeting. Any material change will be flagged with a new 'last updated' date at the top of this page.
5. How to complain
If you are unhappy with the way we have handled cookies on this site, please write to [email protected]. You also have the right to complain to the Information Commissioner's Office at ico.org.uk or on 0303 123 1113.