Latest speed scamera system here.
A bit of caution advised, I wouldn't be surprised if this is one of the Governments standard 'leak something really bad and the punters will be happy when we introduce something only half as bad' schemes. This also assumes that they can get it working, the government record with introducing big IT systems is not good (Child Benefit, Income Support, Passports, Swanage air traffic ... ). The article does refer to the DVLA database being in a bit of a state.
Still doesn't sound good, you'll spend all your time watching the speedo.