I stand corrected on a farmers tractor, but the laws have changed and drastically changed.
Find out when you can use rebated diesel, biodiesel or kerosene in vehicles and other machinery.
www.gov.uk
As for the speed cameras ... you dont get a couple of % over anymore... especially on a motorway... if there's a red circle around the limit when camera signs are in place whatever it says is the limit is that's it and no % over.
It also includes the national speed limit....
Go on ask what they said on the course I just did .... and they only took £80 for the privilege not the £100 and 3 points.
You get offered a course if your just over and have not done one within 3 years.
But I agree the 20 with cameras is a very bad idea.... you should be watching for stupid people just walking into roads...
Ps...I still like the Safari Trek.......