I have found G & W to be excellent to deal with and the premium of £321 for fully comp, recovery/ breakdown home and abroad, unlimited miles and legal fees seems to be very competitive.
I have peviously used Headly who were also good, however the breakdown service when I needed it with my previous +4, was pathetic! I had to wait 3hrs only then to be told by the recovery chap that he had never dealt with a Morgan before and was unhappy about loading it!