I'm sure I read an article somewhere recently saying the speeding courses aren't quite so "good" now some insurance companies asking you to declare them (no doubt with an increase in premium). There's also the question of how far you have to travel to attend if you can't go locally.
This is what I came here to say...I'm sure if I remember correctly Wales is an interesting one. You have to do the course in the attached center to where you were snapped. You can't just do it in your local one.