Its first section opened in 1973, and the rest was all built, but the A41(M) doesn't exist. It was canned in favour of orbital roadbuilding, and later resurrected in a more modest form.
It was the UK's only single-carriageway motorway, and twenty years ago it ceased to exist. This is the story of the strange fascination it held, and of my place in history.
The annual London Pride event was accompanied, in 2016, by some quite unusual changes to traffic lights around Trafalgar Square. The green men went missing — and seven new symbols took their place.