Last year I was with Footman James for 4 cars and the 306 Cabrio (because not quite 20 years old) with Adrian Flux.
At that point, my FJ classic policy had four vehicles ranging from 1969 to 1992. It had unlimited miles and was about £210.
I'm the past, there have been five vehicles on the policy and that was the maximum for it.
The Pug was 18yo when first insured with AF @192 with 3k limit. Minimum age was 15yo. Then after a 4pt SP30, EU licence, increase to 5k limit (max available) it jumped to c. £320. (The same points/licence declaration with FJ incurred no increase.)
The year FJ was up to £280. AF up to £450. However FJ classic now is 3 cars max. Renewal is under some multicar scheme with apparently no limit to number of cars that can be added. Adding the Pug to it and a Volvo (so 6 cars 1969-1998) made it £292 on a 10k limit for the pool. It would have been around £380 for unlimited miles which is the next step after 10k. [Cheap CA postcode, mid forties, average rated job, additional driver, club member (not sure if club membership is a must, I've no DAF on the policy - unless you count the 77s
- but am member of the DAF Club Nederland. YMMV]
Still a happy customer with FJ after c. 15 years.
Flux were actually okay to deal with in cancelling the auto renew and running their policy to expiry. Didn't hassle me into staying or anything and quite different from the pressure to sell when taking out the policy 2 years back.
tl;dr call FJ for a multicar quote. Their policies have a lot of bolt-on options to cover.