My friend has a VTS and on his own name with 2 years no claims, he was still paying over £2,000. Along with the Corsa, they are one of the primary boy racer cars and are therefore prone to an higher average accident rate thus increasing insurance premiums especially for anyone under 25.
The vtr is also black listed by insurance companies but its not half as bad, if you have the money you should be looking at £1,500 on your own name but a couple of hundred quid less if you go on your mums/dads name. It also depends on location, I remember getting quotes for a VTR where it could cost me only £800 in a quiet area but roughly 1,500 for my mate, almost twice as much!