I’m sitting at home working, minding my business, and the mobile rings. It’s DC Lyle from Wandsworth police station. He says that my name was given to Crimestoppers anonymously as a potential witness to the ‘Putney Pusher’ incident. Remember that nutter who barged a woman into the path of a bus on Putney Bridge while out for his morning jog? Well, six months on and they still haven’t found him — and DC Lyle wants to meet.