I got the same in July in Wales, didn't know the area, got caught doing 36 in a 30, though I was slowing from the 40 limit zone to a 30 zone. I blame my parents, I was following them at the time

3 points and 60 quid fine.
Just got caught by Transport for London in a yellow box. Wrote to them to try and get out of it cos I entered the box thinking that the cars in front were going to move forward enough to let me get out of the box, but didn't. They replied saying that my car was stationary (only the back of the car from the rear wheels back) for 8 seconds!!!!!
Paid up, £50, but no points cos it wasn't the police.