Cookies are files saved on your phone, tablet or computer when you visit a website.
They store information about how you use the website, such as the pages you visit.
Cookies are not viruses or computer programs. They are very small so do not take up much space.
make our website work, for example by keeping it secure
remember which pop-ups you've seen
measure how you use our website, such as which links you click on (analytics cookies)
help show you relevant health campaigns on social media