Cookie Policy

How we use cookies…

This cookie policy applies to citizens and legal permanent residents of the United Kingdom.

Cookies are small text files placed on your device when you visit a website. They help websites work correctly, remember your preferences, and — where you consent — give site owners insights into how their content is used.

We group cookies into four categories: essential ones the site cannot work without, functional ones that remember your preferences, analytics ones that tell us how the site is used, and marketing ones used to tailor advertising. The tables below list each third-party service this site may use, the cookies it can set, and the category each cookie falls under.

You can review or change your choices at any time through the cookie consent banner on this site. You can also clear or block cookies through your browser settings, though some parts of the site may not work as expected if you do.

Cloudflare provides network infrastructure, content delivery, and security services. Cookies set by Cloudflare are strictly necessary for the site to function securely — they support bot protection, challenge verification, and network integrity. They do not track visitors across sites or serve advertising.

Cookie name	Category	Purpose	Expiry
`__cflb`	Essential	Load Balancer session affinity cookie used to keep a visitor on the same origin pool and support seamless failover when configured.	Session; several seconds up to 24 hours
`__cf_bm`	Essential	Supports Cloudflare bot products by distinguishing automated traffic from human visitors and carrying bot-score/session signals for protection logic.	30 minutes of inactivity
`__cfseq`	Essential	Sequence cookie used by Cloudflare bot sequence rules to evaluate request order and timing patterns.	Varies by Cloudflare configuration
`cf_clearance`	Essential	Stores proof that a visitor passed a Cloudflare challenge (including Turnstile/Challenge flows) so repeat challenges can be reduced while maintaining security checks.	Varies by challenge/security configuration
`cf_ob_info`	Essential	Always Online diagnostic cookie containing origin failure metadata (for example status code and Ray ID) for fallback handling.	30 seconds
`cf_use_ob`	Essential	Always Online routing cookie indicating that content should be fetched from the Always Online cache on a designated port.	30 seconds
`__cfwaitingroom`	Essential	Waiting Room state cookie that tracks visitor queue/admission status for hosts and paths protected by Cloudflare Waiting Room.	Varies by Waiting Room configuration
`__cfruid`	Essential	Legacy Rate Limiting cookie used by previous Cloudflare rate-limiting implementations to manage incoming traffic.	Varies by Cloudflare configuration
`_cfuvid`	Essential	Rate Limiting Rules cookie used (when enabled) to distinguish unique visitors sharing the same IP address, such as behind NAT.	Varies by Cloudflare configuration
`cf_chl_rc_i`	Essential	Internal Challenge Platform diagnostic cookie used by Cloudflare to identify production issues on client-side challenge flows (including Turnstile-related challenge execution).	Varies by Cloudflare configuration
`cf_chl_rc_ni`	Essential	Internal Challenge Platform diagnostic cookie used by Cloudflare to identify production issues on client-side challenge flows (including Turnstile-related challenge execution).	Varies by Cloudflare configuration
`cf_chl_rc_m`	Essential	Internal Challenge Platform diagnostic cookie used by Cloudflare to identify production issues on client-side challenge flows (including Turnstile-related challenge execution).	Varies by Cloudflare configuration

Matterport provides immersive 3D virtual tour technology. When a Matterport tour is embedded it may set authentication cookies and use Google Analytics to measure tour engagement.

Cookie name	Category	Purpose	Expiry
`_m_auth`	Functional	Authentication token used to identify the user within embedded Matterport virtual tours.	Session
`_m_notice`	Functional	Tracks whether the user has acknowledged Matterport's cookie notice.	1 year
`_ga`	Analytics	Google Analytics cookie used by Matterport to distinguish unique visitors and measure tour engagement.	2 years
`_gid`	Analytics	Google Analytics cookie used by Matterport to distinguish unique visitors within a single day.	24 hours

YouTube is a video hosting and sharing platform operated by Google. Standard YouTube embeds may set cookies to track video engagement, measure audience reach, and serve personalised advertising.

Cookie name	Category	Purpose	Expiry
`YSC`	Functional	Registers a unique session ID to maintain statistics of videos watched via embedded YouTube players.	Session
`VISITOR_INFO1_LIVE`	Functional	Estimates the user's bandwidth to determine whether to serve the new or legacy YouTube player interface.	180 days
`yt-remote-device-id`	Functional	Stores video player preferences (such as quality and volume) for embedded YouTube videos.	Persistent
`yt-remote-connected-devices`	Functional	Stores information about devices previously connected via the embedded YouTube player.	Persistent
`GPS`	Analytics	Registers a unique ID on mobile devices to enable tracking based on geographical GPS location for analytics.	30 minutes
`yt.innertube::requests`	Analytics	Caches requests made to the YouTube internal API to improve performance.	Persistent
`PREF`	Marketing	Stores user preferences and personalises the YouTube experience, including ad targeting based on content watched.	2 years
`VISITOR_PRIVACY_METADATA`	Marketing	Stores privacy-related metadata to help YouTube serve personalised content and targeted advertisements.	180 days