In 2015 I represented Mr P who was charged with dangerous driving. It was based on CC TV footage obtained from a town centre bus that he had passed on his car. Police used the footage to calculate his speed at 70 miles an hour in a town centre 30 mile an hour limit. It was decided the speed was “grossly excessive” and justified the charge of dangerous driving. I obtained access to the original footage from the bus and had that analysed. My own expert advised that the police had miscalculated the speed because their frame count was incorrect. When my own expert evidence was introduced the dangerous charge was dropped.