There's this newspaper report that maybe him:
Hammersmith & Shepherds Bush Gazette 12th August 1960
William McKegg, 50, unemployed, of no fixed abode, who threw a piece of concrete through a plate glass window of the Seven Stars public house, Goldhawk Road, Shephers Bush, on August 8th, causing damage to the extent of £100, was jailed for six months at West London on Tuesday. He pleaded not guilty and said that he had been 'pushed around' by the landlord.
A policeman who was in a patrol car, said he saw McKegg throw an object through the window and arrested him.