Andrew Mitchell's Plebgate row bicycle goes on sale on eBay The 18-speed two-wheeler, complete with front basket, has so far attracted one anonymous bid of £200, but will stay on sale until Thursday at 7pm. Scotland Yard are investigating the Downing Street dispute in the wake of a Channel 4 investigation which cast doubt on the original account of the incident. The programme revealed CCTV footage which showed there was not a large group of tourists outside the main gate at the time, as had originally been claimed. An email from a civilian witness backing up the police account of events has also since been called into question.