Privacy choices
Cookie policy
How essential storage and optional measurement technologies are used on this website.
Last updated: 12 September 2026
Essential technology
Essential browser storage is used to keep the website working, remember privacy choices, protect forms and support requested features such as a saved self-check result. It cannot be switched off through the consent panel where it is necessary to provide the service.
Analytics
With your permission, analytics technologies help us understand aggregated use of the website and improve content and journeys. Analytics should not load when that permission has not been given or has been withdrawn.
Advertising
The website does not currently use self-check answers or health profiles for targeted advertising. Any future advertising technology will require a separate privacy assessment and appropriate consent controls before use.
Change your choice
Select Privacy settings in the footer at any time to review or change optional choices. Your browser can also delete stored data, although doing so may remove saved preferences or results.