Triple indemnity

I have 3 cars all insured by different insurance companies is there an insurance company that I could take out a policy with that would insure all 3 vehicles on 1 policy?

Whole in one

I need to insure three cars and a motorbike, to be driven by both my wife and me. You have recommended Primo plc in the past. Do you know of anybody else who might cover such a combination of vehicles...