Help! Advice for an innocent brother unjustly treated by the city police

If a policeman on a bicycle radioed in to a busy overworked metropolitan police control centre with "I have just seen a cyclist go through a red light - can we get a couple of cars down here to search the area and track him down" - he would be laughed at.

Unfortunately for the guy in this case, City are probably the least overworked and busy force in the country, with the possible exception of the Outer Hebridean police authority.