Got the caravan all sorted, after the flood in winter - or more correctly, I got knackered just sitting watching Karl do all the work !
It's now thoroughly cleaned, inside and out, and the electrics and all other systems work fine, with no apparent damage. Just need to have the new transformer / power unit fitted, in order to be able to use the water pump and auxilliary lighting, and it'll be as good as new.
My sincere thanks to Karl for all his hard work, and I'll be staying for a short break, before returning home on the weekend, a very happy chappy, and then coming back to Norfolk in a week or two.