From the Lancashire County Council Speed Awareness Course frequently asked questions.
If I get caught speeding again will I get the points and have to pay the fine for the first offence?
No, this is a myth that we sometimes get asked to confirm. If you successfully complete the speed awareness course, you will not have to take the points or pay the fine for the first offence if you get caught speeding again. However, you will have to pay the fine and take the points for the new offence.
Certainly this is what I was told when I took the course.