I hate the entire idea in principle. Passing your test entitles you to drive without a smarta*** looking over your shoulder, criticising your driving. Even if I could get insured for £1 with one I'd still refuse.

A computer cannot possibly make driving judgements. Is an emergency stop to avoid flattening a child deemed harsh braking? Will I be marked down for that? What about speeding up to get past a slip road with oncoming traffic when I've got traffic on my right? I'd say I have little other option and am taking the safe route, but computer may disagree.

But Dorris doing 12mph on her way to the Edinburgh Woollen Mill will be applauded by this computer?

The algorithms seem primitive. Sharp braking and acceleration are 'punished'. Conversely, trundling through a red light or crawling out of a junction onto a national speed limit road are 'rewarded'. No thanks. I'd rather be judged on the number of accidents I'm involved in-or lack thereof.

Exactly my point. Also, does this mean that if some eedjit pulls out of a road end on me and I slam on, it goes as a black mark against my driving? (I hope the black box doesn't also record the language used and penalised on that basis too)

There's also no way I'd want to take a motorway/dual carriageway slip road at 30mph in order to lower my premium.....the speed differential is too great and it's asking for an accident.