What is their real point?

The Sun newspaper yesterday quoted statistics which suggest that the areas with most speed cameras have the worst road safety records.

In fact the big five which have 2,000 cameras between them, - London, West Midlands, Lancashire, Thames Valley and Greater Manchester, fill five of the top six for the number of serious crashes.

Last year drink-drive accidents killed 430 people, compared with 410 the year before, - an increase of nearly 5%.

This is still more weight to the arguments that the cameras are intended to raise revenue, rather than saving lives.