There is some splendid cine footage of Bill Bradley riding "at full tilt" for Harry Quinn-Castrol during the 1962 London-Holyhead race in the compilation video "British Cycling Classics of the 1950s-60s". It appears that the team bikes were painted red (naturally for Liverpool-made machines!) and white. I think he placed 4th in this race.
And yes the jerseys are red-white-green.. perfect Italian colours for a British team!
Peter Kohler
Washington DC USA