I can sympathise with dozy…its not nice being accused of something you havnt done…and that really gets my back up too…especially when afterwards they say …Sorry we had the wrong driver…so that should be the end…but if it carries on as a further investigation…take the time out…go to their office and every question say " NO COMMENT"…till they get fed up…if they ask whats that all about, tell them you are not under investigation…it was a mistake or whatever…i personally would tell them to do one.