A Buckingham Palace guard was spotted slipping and landing on his bottom while on duty.<br /><br />Anthony Smith, 45, was visiting Buckingham Palace as part of a weekend away in London.<br /><br />He happened to be filming a visit to the iconic palace last Sunday (18) when an unexpected scene unfolded.<br /><br />The video shows the moment the guard's foot slips from under him mid-march - and he lands on the floor on his bum.
