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A "cookie" is a small text file that's stored on your computer, tablet or phone when you visit a website. Some cookies are deleted when you close down your browser. These are known as session cookies. Others remain on your device until they expire or you delete them from your cache. These are known as persistent cookies and enable us to remember things about you as a returning visitor.
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To find out more about cookies, including how to see what cookies have been set and how to manage and delete them, visit www.allaboutcookies.org. Alternatively, you can search the internet for other independent information on cookies.