18-12-2010 - Severe cold weather brings disruption as heavy snow falls in London. Police officers and members of the public try to free standed bus with sand and grit to stop it slipping on the ice. © Duncan Phillips

18-12-2010 - Severe cold weather brings disruption as heavy snow falls in London. Police officers and members of the public try to free standed bus with sand and grit to stop it slipping on the ice. © Duncan Phillips