Just found this from
http://www.thisisbristol.com/POLICE LEAP INTO ACTIONOfficers from Redland police's mountain bike team are being specially trained to leap from their bikes at high speeds to catch criminals. As well as this, they are being taught how to cycle up and down steps, and how to ride at speed through narrow ally ways.
PC Nick Pearce, 44, said: "We were targeting a particular area after a series of robberies in Cotham Gardens last year.
"There was a robbery and the offenders made off on pedal bikes through a footpath, but thanks to our local knowledge we cycled to various points and arrested several of them.
"Without the bikes that would not have been possible."
The other members of the four-strong team based at Redland police station are James Ray, 32, Giles Fletcher, 26, and Andy Fox, 24.
They all attended a training course with the City of London Police, which has two cycling sections.