I would always advise against speeding. But particularly on the section of the M4 J14-18 through Wiltshire, where cameras calculate your average speed through this section. If it is more than 79mph, you get a £60 fine and 3pt on your license. http://www.timesonline.co.uk/article/0,,2-...1565657,00.html Having seen how many accidents this has reduced ( http://www.safetycameraswiltshire.co.uk/pub.asp ) - and probably saved a couple of people's lives in the year it has been operating, I am sure this will spread to other parts of the country. And no bad thing. Just think of all the accidents, fuel and CO2 we would save if no-one drove at more than 70mph...