Cookies on O2 websites

Cookie policy

Cookie name What do we use it for? o2.co.uk o2.co.uk/shop
__utma We use this cookie to help us count how many people visit our websites. It's usually set the first time you visit a site. If you delete it (for example by deleting all cookies in your browser settings) then a new one will be set the next time you visit.    
__utmb We use this cookie to count and measure "user sessions" – that is, individual visits to our site, which may include several different pages or areas of the site. If you don't do anything for 30 minutes, this cookie expires and a new cookie is set when you begin using the site again.    
__utmc We don't use this cookie any more: you can delete it if you want to but there's no risk in leaving it set.