Matt at Henderson Taylor sorted me out again on Monday.
£650 on the GT3 although this rose to about £820 if I wanted commuting. I do, just incase I want to take the car on a nice day. My 964 Turbo was only costing £299 per year but nevermind.
Once again, I will suggest... Try Heritage for a quote. I am in a 996 GT3 Mk2, 5K limited miles PA, garaged but free track day cover for unlimited PCGB events.