Try Vantage. They initially declined us with this
I have offered your information to our panel of insurers but unfortunately they are insisting that a motorhome or similar leisure vehicle has been owned and insured by yourself within the last 2 years.
I did explain your situation but they have said they must following their underwriting criteria.
But I reapproached them after Downunder pricing blew me out of the water and they relented.
They quoted 2,811.35UKP for a 43,000UKP camper, we were advised to insure for full retail replacement in case she gets totalled. They only offer prices on a yearly basis but when you are finished motorhoming you can cancel this insurance and be refunded back a percentage of the premium.
I tried for discount based on being members of the Auto-Trail Owners Club or Camping Caravanning Club UK or both.
Unfortunately memberships will not reduce the cost further.
They like to see previous ownership and insuring of a motorhome within the last 2 years.
See vantageinsurance.co.uk
Also
http://www.tourinsure.de/international-vehicle-insurance/camper/europe9b85.html?L=6
I've no experience or affiliation with either lol
Please let us all know who you go with and your experience dealing with them.