http://www.gumtree.com/london/83/17525183.html You could cut the steerer down yourself, just thread on a steel cup before cutting / filing (it cleans up the threads as you unscrew it.) OR go to a bike shop. (Legal disclaimer)
@provenrad 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.
http://www.gumtree.com/london/83/17525183.html
You could cut the steerer down yourself, just thread on a steel cup before cutting / filing (it cleans up the threads as you unscrew it.) OR go to a bike shop. (Legal disclaimer)