[lozf]

Those are not "speed" cameras, they're to enforce daily payment (or fines) for driving in "Ultra Low Emissions Zone" areas in non-compliant vehicles. The area covers all 32 London Boroughs, around 1,500 km² (580 square miles), - affecting approximately 9 Million people.

[tanjtanjtanj]

Destroying speed cameras, especially the tire method, in the UK far predates ULEZ.