I have decided on answers for all clues except one - the green '3' on the roof at top right. I think it's unfair of RT to include programmes from channels that are not free-to-air, or obscure, as it's impossible to get the answers by normal viewing. For example the Valco sign is from 'Trollies' on Sky1, the white Rolls Royce is from 'A Touch of Cloth' on Sky1, and the letters in hexagons are from "All New Blockbusters" on Challenge. The 'Harbour Books' shop is not a clue - it's in the original photo which can be seen on the website printed in the left-hand margin, useful for telling what's a clue and what isn't.