Hi PaulG ... my NSX is insured through "AON" on 01384 552702 as a 'modern classic' and as my second car, which means there is no 'no claims discount' applied to the cost ... I seem to recall a few people giving them the nod of approval on here in the past.
My policy has my '96 3.0 manual JDM <50,000mile NSX insured for £26,000 [ok, maybe a tad on the high side, but hey, its priceless tome, or at least it was when I got it] ... its a limited mileage policy for up to 5,000miles a year, although this can be easily extended for a small fee ... under the policy it must be garaged overnight when its at home ... and the excess is just £250 ... now I have attended one track day and have a letter to verify this, they will even cover me on track days with the appropriate notification and a small additional premium of course ... the cost of all this ... a tad under £520 for someone between 35 and 40 years old.
HTH
Enjoy it while it lasts ...
Gone but never forgotten ...
'96 Black over Red 3.0 Manual JDM import (09/04 to 10/07)
'06 Grey Audi RS4 Saloon Manual (08/06 to 09/07)
'90 Lotus Carlton (06/05 to 08/06)
'77 Spitfire Mk V (06/87 to 09/89)