Lord Ken Maginnis, a 75-year-old former Ulster Unionist Party MP for Fermanagh and South Tyrone was found guilty at Dungannon Magistrates’ Court of grabbing 21-year-old Keith Kirk by the arm and threatening to punch him in the town last summer after becoming enraged at him for honking his car horn.

The peer, who admitted calling Mr Kirk a “yellow bellied bastard”, had denied the charge of common assault.

But District Judge John Meehan said he was satisfied the prosecution had proved the case beyond reasonable doubt.

He fined Lord Maginnis 200 pounds and ordered him to pay a further 200 pounds in compensation to Mr Kirk.