Vandrose, of Thornton Heath, and Quincy Ffrench, of Tottenham, were sentenced to 15 years in prison.
Hettiarachchi, of Harrow, was jailed for 13 years.
During the trial, it was heard security guard Hettiarachchi had spotted Mr Odunlami wearing a fake Patek Philippe Nautilus watch with diamond encrusting which, if real, would be worth about £125,000.
Hettiarachchi then tipped off his accomplices who attacked Mr Odunlami after he left Haz restaurant.
Menzies, of Tennyson Road, Brent, stabbed the victim before the robbers made off in a Mercedes car with the watch.