He knows if you've been bad or good...or does he? Santa's naughty list has been deleted and Mrs Claus needs your help to repair it. You'll explore London's heritage and Christmas lights, completing photo challenges along the way to re-build the list. Bring on one of the most epic Christmas scavenger hunts around, topped off with a party at the The Piccadilly Institute and a glass of Christmas cheer to wash it all down. Festive. Please arrive on time or the hunt will start without you. Over 18 only, valid ID required.