I just watched I.D. on DVD (for those who have not seen it its a great British film from about 1987 about an undercover cop who infultrates a gang of football hooligans and gets so absorbed in their world he becomes one of them).
Anyway there is a scene where the gang goes to the away fans end at a football match to start a fight. In the ensuing fracas one of the extras who gives the main character a good thumping is wearing exactly the same outfit that the boys encourage Morell to wear in A Room for Romeo Brass.
I wonder if this was intentional or a happy coincidence.