takes ages to build up a good score and it drops drematicly considering in a 30 police let you get away with 33 and I was on a 70mph road a car kept me out in the fast lane had a car behind pressuring me done 74mph to get past safe it has happens loads and destroyed my score never getting black box again worth paying the extra . it's a con plus I'm 22 it was £1900 for a 1l Corsa sxi rep and £100 to install black box that wasn't staited and £100 at end of policy to remove plus 35 to put my private plates on already paid DVLA to put on car other insurance company's are free