Dashcam footage from the UK captured the dramatic moment a passing motorist stopped to help out a man whose bike was stolen chase down the thief - and catch him!

The heroic motorist was driving through Sutton in south London on a lunch break with his son when he happened up on a crime in progress.

Dashcam footage shows a would-be bike thief making off with a cyclist's bike as the owner chases behind screaming that his bike has been stolen.

Without hesitation the man behind the wheel - who does not wish to be named, chases after the thief, eventually catching up with him, cutting him off with his car and the stolen bike is able to be wrestled away.

The heroic moment was purely by chance but was luckily captured on the car's dashcam.

The man said: "My son and I had decided to go to lunch and we were driving down a T junction and across we could a see a man riding very quickly and someone else with a yellow jacket chasing him."

"We thought it was strange so when we got to the junction we decided to turn left and see what was happening. Suddenly, the guy on the bike comes out from a side street and behind him the guy with the yellow jacket and as we drive past, we hear, 'He has my bike!' so we decided to follow him."

"He decided to turn left at the next crossroad, and I saw a big curb so I thought I [could] squeeze him up against the wall without hurting him and we managed to stop him. Thankfully it worked and nobody was hurt."

Dashcam footage from the UK captures moment bike thief is stopped by incoming driver as bike owner chases him down the street.

A man was driving through Sutton on a lunch break with his son when he happened up on a crime in progress.

Dashcam footage shows a would-be bike thief making off with a cyclists vehicle as the owner chases behind screaming that his bike has been stolen.

Without hesitation the man behind the wheel - who does not wish to be named chases after the thief, eventually catching up to him, cutting him off with his car and wrestling the stolen bike away.

The heroic moment was purely by chance but was luckily captured on the cars dashcam.

The man said:

"My son and I had decided to go to lunch, and we were driving down and T junction and across we could a see a man riding very quickly and someone else with a yellow jacket chasing him."

"We thought it was strange so when we got to the junction we decided to turn left where he had left to go and see what was happening. Suddenly, the guy on the bike comes out from a side street and behind him the guy with the yellow jacket and as we drive past, we hear "he has my bike" so we decided to follow him."

"He decided to turn left at the next crossroad, and I saw a big curb so I thought I can squeeze him up against the wall without hurting him he will stop, and we managed to stop him. Thankfully it worked and nobody was hurt."