Cookies are files saved on your phone, tablet or computer when you visit a website. They are very small so do not take up much space.
Find out more detailed information about the cookies we use.
To find out how we collect, store and use information about you or your visit, view the NHS website privacy policy.
Optional cookies that measure website use (analytics cookies)
These cookies store information about how you use our website, such as the links you click on. We use them to help make our website better.
If you accept analytics cookies on the NHS website (www.nhs.uk), and then use a link that takes you to another online NHS service, your choice will be shared with that service.
This means you will not be asked about analytics cookies again on the other services you use.
Your choice will be shared each time you use these online NHS services through the NHS website.
You can update your cookie settings for the NHS website on this page. To change your cookie settings for other online NHS services, view the NHS App cookies policy and NHS login cookies policy.
Optional cookies that remember pop-ups
These cookies remember pop-ups you've seen, so you do not see them again.
Optional cookies that help with health campaigns
These optional cookies help us show you relevant adverts for our health campaigns on social media, such as Facebook or Twitter.
Page last reviewed: 20 March 2026 Next review due: 20 March 2029