Hi Jim
Not well known.Their name Simple Caravan Insurance is a trading name of TPS ( Insurance Admin Services) Limited. Policies are underwritten by UK Underwriting Limited on behalf of by Fortis UK Ltd . Simple??
Just be certain to double check you fully understand exactly what is NOT insured. Be very accurate and clear on how you describe the security arrangements. If it's good for you, it is your choice.
Personally I have always stuck to the CC Insurers as their cover suits my needs best.
Please remember cheapest is not always the best.
Cheers
Dustydog