A VIOLENT thug who knocked a man unconscious before stamping on his head has been jailed for six years.

Brutal Jamie Casement, 22, punched the stranger senseless during an unprovoked attack at Wemyss Bay Railway Station on 21 January.

He appeared from custody at the High Court in Glasgow yesterday.

Judge Lord Bannatyne told him: “This was an entirely unprovoked attack on a wholly innocent victim.” The case was moved to Glasgow from Greenock Sheriff Court after Sheriff Derek Hamilton recently decided he did not have the sentencing powers to impose a big enough jail term.

The Tele got exclusive access to CCTV images of callous Casement captured just moments after the horrific assault.

They show him swaggering down a train carriage at the station as he attempted to leave the scene.

He had launched the violent attack after the woman he was with chatted briefly to the man and asked him for a cigarette.

Casement assaulted the man without warning then left the station as the shocked woman leant over the unconscious male.

When the thug returned to the scene he shouted at the female before the pair boarded a waiting train.

CCTV from inside the carriage shows the woman throwing her bag onto a seat in anger as the pair shout at each other.

Meanwhile, outside, the victim lay unconscious for around five minutes until a ScotRail worker approached and managed to rouse him.

He was treated in hospital for his injuries, which included a fractured jaw.

Casement, a prisoner at Low Moss, admitted punching and stamping on his victim’s head on the station concourse during his earlier appearance at Greenock Sheriff Court back in May.

He has two previous convictions for violence.

Lord Bannatyne has also ordered him to be monitored in the community for five years after his release from jail.