© Licensed to London News Pictures . 19/12/2014 . Manchester , UK . Police handcuff and detain a man outside TGI Fridays in Manchester City Centre . " Mad Friday " revellers out in the rain and cold in Manchester . Mad Friday is typically the busiest day of the year for emergency services , taking place on the last Friday before Christmas when office Christmas parties and Christmas revellers enjoy a night out .  Photo credit : Joel Goodman/LNP