in the 70s and 80s the law was the police had to follow you for 8 tenths of a mile to nab you for speeding?

Nice try - major fail though for a number of reasons not the least being that it was never the law about following for 8/10 of a mile.

Also of course there is the fact that cameras have been approved for use etc etc.

Just pay the ticket pal. You were no doubt speeding.

Back in the days before on-board electronics were common, traffic police would often use the "follow check" method to catch a speeding motorist.

They would follow a vehicle for at least two tenths of a mile (or a full mile on motorways) and check the speed against their own calibrated speedometer. The excessive speed would have to be corroborated by at least two officers, for a case to stand up on court.

However, the follow check method wasn't law in itself. It was simply a recognised way of catching a speeding motorist.

That was not the Law, but a working guideline. To make a successful case they need to have 2 sources of evidence, ie the PO says in his opinion you were speeding and his speedometer showed xx mph. Gatso's have the radar reading and the photos with the road markings..

It was not law but the Vascar technology (Visual Average Speed Computer And Recorder) could only get a speed if they followed you for a certain distance.

Newer technology has changed how things work.

That was never a law. There are customary practices and professional guidelines, but no law required what you claim.

U tellin us yor still on the run?

Hmm...there was no such law..Where did you read about this?Even exist

wrong... since all "speed cameras" as you call them...

have you targeted for even more then a mile

There was no such law.

when money is involved....... laws disappear.