yes i agree, the 70 limit on motorways is rediculous, it was set in the 70,s by the then transport minister Barbara Castle MP, ( who didnt have a driving license) The safety of new vehicles with ABS brakes, wider tyres, had increased safety considerably,however the overall general driving standards in the country with drivers hogging the overtaking lane/s and all vehicles following behind each other bunched together at 70 is totally mad, a farari at 90 is a lot safer than a citroen diane at 60!i think 90 on a motorway max in good dry weather for newish cars is fine, ( observing highway code stopping distances!and good driving practice.

To a degree, I would agree with what everybody is saying. Although I think there are safety concerns for inexperienced or poor drivers.
The increased stopping distance, even with such a minor increase in speed and the poor hazard perception of most drivers, many of whom are distracted anyway, would probably lead to far more deaths on the motorway.
Maybe a slight exemption could be put in place for advanced drivers?