THREE White City thugs who beat a policeman unconscious after he tried to stop them attacking a young man, have been jailed.

Wallflower Street residents Michael Luke, 28, Paul Luke, 30 and James King, 30, were sentenced to a total of three and a half years at Isleworth Crown Court last Friday (15) for attacking 27-year-old PC Sean Tucker.

The vicious incident took place in the early hours of March 12, 2011, when police were called to Hemlock Road following reports of a man being chased by a group of youths armed with a knife.

When they arrived they found one man being brutally targeted by a gang but when they tried to step in they too were attacked.

PC Tucker was kicked, punched and thrown across a front garden where he hit his head and was knocked unconcious.

Urgent assistance was called for but when back up officers arrived they were forced to use CS spray to stop the violence and defend themselves.

Several men were arrested but the trio were subsequently charged.

PC Tucker was hospitalised and required surgery to insert an artificial ligament in his leg and has still not returned to full duties.

Both Michael and Paul Luke were sentenced to 12 months for affray. King was sentenced to 18 months for affray and actual bodily harm.

Borough commander for Hammersmith and Fulham, chief superintendent Lucy D'Orsi, said: "Officers responded to a member of the public being attacked and suffered appalling injuries whilst protecting a young man.

"The sentences given to those involved illustrate that society is not prepared to tolerate attacks on members of the community and those who are there to protect them."