8600c55b__Use_of_cookies_on_our_website__Purpose
[Name] __atuvc [Expires] End of session [Purpose] 
AddThis - social sharing Used to make sure that website visitors see the updated count if they share a page and return to it before the AddThis share count cache is updated. The share count is not displayed on this website, but the cookie is still automatically by AddThis.
Surrey County Council - Use of cookies on our website
Purpose