Not one of the cameras, but I’ve had one of those “Oi, You’re Going Too Fast” flashing light speed reminder signs start blinking at me when I was stopped at traffic lights, with no other cars about. A large bird had flown diagonally across the road about fifteen feet off the ground; so actually the machine was trying to tell off a teenage seagull. Stupid things; I’ve taken little notice of them ever since.

This was in Haverhill, in Suffolk, a couple of miles outside Essex, about 20 miles from Chelmsford, I think. Either the local sign fitters don’t do that good a job, or the local air has a very nasty light….