Footman James I would have thought
Peter James are in my experience unbeatable for classics (though not necessarily for modern bikes). Both Carole Nash and Footman James have been taken over by the big companies and no longer have the knowledgeable staff they used to. My Matchless G80 costs less than £80 / year with PJ - full comp, agreed value and UK / EU breakdown cover.
Peter James Insurance - The Way It Should Be!