A man dissatisfied with a Gloucester mechanic's work on his Audi A3 burst into his workshop 'mob-handed' and punched him in the face, fracturing his cheekbone, a court heard. Callum Cornock, of Manu Marble Way, Tuffley, admitted inflicting grievous bodily harm on mechanic Jon Goodfield. Prosecutor Charlotte Evans told Gloucester Crown Court that Mr Goodfield, who worked at a car workshop in Bonnie's Lane, St Oswald's, had agreed to replace the engine of the 23-year-old’s car.