A railway worker confronted a thief trying to steal a bike before then waiting four hours after his shift ended to return it to its owner.
Abdul El-Gayar, 31, was leaving work at 2pm when he saw someone trying to cut the lock off a bike with a pair of bolt cutters outside London’s Cannon Street station.
Steve Farmer, 39, from Guildford, Surrey, who works near the station, returned four hours later, at which point he realised his bike was missing.
However, he was met by Mr El-Gayar, who asked him to put his code into the lock, before returning the bike to him.
Mr Farmer said he normally locks his bike up at work, but it was his first day back at the office and he had forgotten his security pass.
The attempted theft has been reported to the City of London Police.