Legal
Cookie policy
What this site stores in your browser, who sets it, why and for how long, and how to change your mind.
- Your choice
Until you accept a category, this site stores two things in your browser, and neither is a cookie: the record of your choice, and where you were on each page until you close the tab. Both are strictly necessary. Analytics and marketing cookies are set only if you accept them. We ask again after 12 months, and you can change your choice at any time.
- What is stored
Strictly necessary
athlaz:analytics-choice
- Set by
- ATHLAZ
- Purpose
- Remembers which categories you accepted, and when. Local storage.
- How long
- 12 months, then we ask again
tsr-scroll-restoration-v1_3
- Set by
- ATHLAZ
- Purpose
- Remembers where you were on each page, so going back or reloading returns you there. Session storage.
- How long
- Until the tab closes
Analytics
If you accept analytics cookies, Amplitude, Inc. holds what it collects on our behalf in its United States data centre, including your IP address and the approximate location (country and city) it estimates from that address. The transfer to the United States relies on the UK Extension to the EU-US Data Privacy Framework, under which Amplitude, Inc. is certified. Amplitude's data processing terms include the UK Addendum to the standard contractual clauses as the fallback. Session recordings show the pages as you saw them, with form fields masked.
AMP_ + project code
- Set by
- Amplitude, Inc.
- Purpose
- Device and session identifiers, so page views join up into visits. Cookie.
- How long
- 12 months
AMP_MKTG_ + project code
- Set by
- Amplitude, Inc.
- Purpose
- The campaign and referring site a visit came from. Cookie.
- How long
- 12 months
AMP_TEST, AMP_TLDTEST
- Set by
- Amplitude, Inc.
- Purpose
- Checks that a cookie can be set, then removes it. Cookie.
- How long
- Removed at once
AMP_unsent_ + project code
- Set by
- Amplitude, Inc.
- Purpose
- Events waiting to be sent. Local storage.
- How long
- Until sent
AMP_remote_config_ + project code
- Set by
- Amplitude, Inc.
- Purpose
- Settings the analytics code fetches from Amplitude. Local storage.
- How long
- Until replaced
AMP_SR_START_ + session
- Set by
- Amplitude, Inc.
- Purpose
- When the recording of a session started. Local storage.
- How long
- Until the session ends
project code + _amp_session_replay_events
- Set by
- Amplitude, Inc.
- Purpose
- Session recording data waiting to be sent. Browser database.
- How long
- Until sent
project code + _amp_session_replay_targeting
- Set by
- Amplitude, Inc.
- Purpose
- Whether this session is recorded. Browser database.
- How long
- Until removed
AMP_diagnostics_ + project code
- Set by
- Amplitude, Inc.
- Purpose
- Error counts from the analytics code. Browser database.
- How long
- Until sent
AMP_URL_INFO
- Set by
- Amplitude, Inc.
- Purpose
- The previous and current page address, for page view events. Session storage.
- How long
- Until the tab closes
AMP_PAGE_VIEW
- Set by
- Amplitude, Inc.
- Purpose
- An identifier for the current page view, so events on the page join to it. Session storage.
- How long
- Until the tab closes
amplitude.engagement. + name
- Set by
- Amplitude, Inc.
- Purpose
- Left by Guides and Surveys, which an earlier version of this site ran; one key carries a device identifier. This site no longer writes these and removes them from every page it opens. Local and session storage.
- How long
- Removed when you next open a page
Marketing
Each tool loads only if you accept Marketing.
HubSpot tracking (only if you accept marketing)
__hstc
- Set by
- HubSpot, Inc.
- Purpose
- Tracks visits: the first, last and current visit time and the number of visits. Cookie.
- How long
- 6 months
hubspotutk
- Set by
- HubSpot, Inc.
- Purpose
- Identifies this browser to HubSpot, and is sent with an enquiry. Cookie.
- How long
- 6 months
__hssc
- Set by
- HubSpot, Inc.
- Purpose
- Tracks the current visit and its page views. Cookie.
- How long
- 30 minutes
__hssrc
- Set by
- HubSpot, Inc.
- Purpose
- Notes whether the browser has restarted. Cookie.
- How long
- Until the browser closes
__cf_bm
- Set by
- HubSpot, on its own domains
- Purpose
- Set by HubSpot's content delivery network on the addresses its scripts load from, to manage automated traffic. Cookie.
- How long
- 30 minutes
Counted on our server
These set no cookie and use no browser storage, whatever you choose.
Cloudflare Web Analytics
- Set by
- Cloudflare, Inc.
- Purpose
- Counts visits to the site. No cookie or browser storage.
- How long
- Nothing stored in your browser
Page counts
- Set by
- ATHLAZ, on Cloudflare Workers Analytics Engine
- Purpose
- Counts visits to some pages, such as the industry, security, licensing and headroom pages, by country and by the organisation that owns the network. Your IP address is not kept. No cookie or browser storage.
- How long
- Nothing stored in your browser
Reopened reading count
- Set by
- ATHLAZ, on Cloudflare Workers Analytics Engine
- Purpose
- Counts that a link to a headroom reading was opened, without reading the figures in it. No cookie or browser storage.
- How long
- Nothing stored in your browser
Failed send report
- Set by
- ATHLAZ, on Cloudflare Workers Analytics Engine
- Purpose
- Tells our server which form failed and why, and nothing you typed. No cookie or browser storage.
- How long
- Nothing stored in your browser
Arrival line
- Set by
- ATHLAZ
- Purpose
- Notes on an enquiry the site that sent you, any campaign tag in the link and the first page you opened. No cookie or browser storage.
- How long
- Held only while the page is open
- How the data is used
- What happens to what these tools collect, where it is held and your rights over it are set out in the privacy notice.
Last updated: 14 September 2026