Originally Posted by
Dicko&Sarah
no cos i know that doesnt exist does it?
as i got prosecuted for 33 in a 30 therefore making that theory wrong

No that is not wrong.
They use 10% +2 as a guideline, but if they want to apply zero tolerance then 1mph over is you done.
Depends what they choose to have in force on any given day.
Speeding is an absolute offence, but 10% +2 can often be used.