Wedger - as someone who had his £20k plus caravan stolen last year, I was with the Caravan and Motorhome Club, who whilst well diligent did pay out in full in the end. Make sure that you have receipts and photo's of everything, where you keep it what locks you have fitted including the keys - total nightmare
Mine had a hitch lock, wheel lock, tracker, motor mover was engaged kept in a secure compound - took 15mins to walk in and take it, real pro's huge business. Police managed to call me back 14 days after i reported it stolen only to advise to claim on the insurance
good luck great fun