Cars are much safer, easier to drive and power compared with when the limit of 70mph on motorways was introduced. My experience is most people on motorways exceed 70mph and there is little enforcement. Therefore why not recognise the safety improvements in cars and increase the speed limit. This make take pressure off of the Police and maybe open up the possibility for much more tougher penalties for those that exceed the new limit.
I believe we should increase speed limits on motorways to 80mph