Pull in front of them, take a picture of the licence plate, report at https://secure.met.police.uk/roadsafelondon/ when you get to work.
I remembered the name of the company this morning. A letter is winging it's way to them in the post.
@bosberg started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
Pull in front of them, take a picture of the licence plate, report at https://secure.met.police.uk/roadsafelondon/ when you get to work.