CCTV shows moment married father is killed with a single punch by love rival

This is the horrifying moment a married father-of-two was killed by a single punch in a row between two love rivals.

CCTV footage shows the moment Alexander Frew fells Matthew Welford with one blow after being waed to stay away from the victim"s wife.

Mr Welford, 41, suspected his wife Sarah was having an affair with Frew and told him, ‘stay out of my marriage" when their paths crossed at a Country Club in Britain on June 4.

A court heard how the pair came face to face later that night in the country club"s car park.

Footage appears to show the victim laughing at his attacker after making a derogatory remark about Frew"s own failed marriage.

Seconds later Frew lands a single punch which knocks Mr Welford unconscious as he hits his head on the ground.

Train driver Frew, 44, was yesterday jailed for three-and-a-half years after being found guilty of manslaughter.