Hi there, i run a black box insurance review site.
There are many different insurers for black box insurance and in our reviews insurethebox comes top, followed by drive like a girl.
Other good companies for young drivers are Marmalade and Co-operative Young Drivers Insurance, however there are new products being launched all the time as all the major insurance companies rush to get in on this form of insurance.
My advice would be that you look at all the present black box providers see which one offers the package that suits you best and give them a try. If it does not suit change it, there are plenty of companies looking for your business.
There is also the alternative of the Roadhawk dash cam that will monitor and record all your journeys in audio and HD which is great for beating crash for cash scams and providing evidence in a no fault accident. Insurance companies are offering substantial discounts for drivers who have one fitted.
I am loathe to put a link on here in case it is counted as spam which is not my intention but I will this time as I am sure it will be useful to you.
You can read reviews on all these companies and the roadhawk dash cam at www.blackboxinsurancereviews.com
I hope that you find it helpful.