I have just read through some of the reviews here and it seems many of people have been in a similar situation... AVOID! My braking score has been on 0 for as long as I have had the black box fitted. I received an email to say they will cancel my insurance if my score does not go above 40... I mentioned to them that my braking score had not gone above 0, apparently this was 'looked into' and nothing flagged up when they investigated it, there reply was 'as the box seems to be working for your acceleration it be working for your braking'. So now, they're charging cancellation fee, no refund on the black box installation, and also another fee which I don't quite understand what it's for, something to do with the time I have been a customer of Hastings Direct SmartMiles. A friend of mine is experiencing a similar thing, although she is being marked for braking but a score of 0 for accelaration. Money grabbing scam!!!