If you are using Facebook through internet explorer then right click in the “tab tool bar” after that click on the “menu bar” then select tools from the options that are displayed then under browsing history click “delete” after that click “okay” in order to close the “internet options” after that when you will reopen the browser your Facebook account will be logged out. If you are using Firefox then get the history cleared from that if you are using Google chrome then get history cleared from that your log out issue will be resolved, for any further help reach the experts at Facebook Support Number UK.