I just purchased a zed and shopped around for a quote.
25 yrs old, 7 years full UK driving license, No NCB (but I have 7 years no claims as a named driver), 2004 base spec 350z.
Went with Admiral in the end at £660
My full story here:
viewtopic.php?f=9&t=64162
First time I've been the policy holder, so hope to build up my NCB with the zed