I was with Peter Best for years because they did the best policies for the MGBGTV8 (by miles).
So when I got my Roadster I just continued with Peter Best another year, and they were MSCC Approved. But at the Mog Event that year, I chatted to the G&W guys and they were significantly cheaper. I've been with them ever since.
DaveW '05 Red Roadster S1 '16 Yellow (Not the only) Narrow AR GDI Plus 4