I think we're going to gradually see insurance companies asking if you have done a speed awareness course and penalising you if you have. I have been sorting my renewal this week and all of the EUI Group companies (Admiral, Bell, Elephant etc) were significantly cheaper than the competition, but your premium rises by around 13% if you have done a course. I expect other companies will latch on to this in time.
Frustratingly there doesn't seem to be any cut off either, whereas points drop off your licence the question question was "have you ever done a speed awareness course?".