The broker is is Scotland, and is called Craig and Suttar. The ladies there are really helpful, and the owner (Wendy) is a big classic car fan/collector. (I appreciate that Skylines are not really "classics" yet, but Wendy seems to have an interest in most things automotive). Basically, she was just fed up with being ripped off with insurance - sound familiar ?? - and decided to set up her own company to help out people like us.
The only conditions are that the vehicle needs to be at least 10 years old, so it'll rule out your 34, I'm afraid. And the mileage is restricted to 5000 (very quick) miles per year, but this isn't really a problem. Not sure what the excess is, but I think that it's only a couple of hundred quid.