By James Wood For Mailonline
Published: 15:46 BST, 13 June 2019 | Updated: 15:46 BST, 13 June 2019
This is the dramatic moment an off-duty police officer chases after and arrests a pair of would-be moped thieves - as he is cycling home from work.
Police Sergeant Steve Clarke was riding through Tolworth, south west London on Thursday, December 6 last year when he came across the pair.
The driver, aged just 15, was driving erratically dangerously along a pedestrian walkway and PS Clarke believed a mugging was about to take place.
Stepping in, he grabbed hold of the young motorist before identifying himself as a police officer and asking members of the public to call for back-up.
Police Sergeant Steve Clarke was riding through Tolworth, south west London on Thursday, December 6 last year when he came across the pair (right)
PS Clarke made chase along a pedestrian walkway, as the moped tried to get away. He was able to catch up and pull the
