I'm not sure the NCD applies with classic insurance - as long as you're a named driver on a 'normal' car policy, that's all they require - I think - but I stand to be corrected.
E320 W124 estate - 5k per annum limit, not garaged, agreed value, £268 (I think), £250 excess, with Classicline, who I've been with for about 10 years. They'll cover anything over 10 years old, plus anything newer but 'interesting' - my Alpina is 2001, but is on the same classic policy.