OK, quick update. No hotel, no electric last night, torches for everything, had to leave fridges and freezers shut for fear of thawing out everything. Female electrician came yesterday and declared that the consumer unit was a wash with water and switched all power off. She spoke with the manager about trying to stop the water coming in which happened today after I rang him. Contractor came out and replaced the lead leashing and resealed into the brickwork with some special silicon he had after I told him that within 60 minutes there was more rain coming and it would was out any mortar he used. Within minutes of him finished it pissed down again so that was good. I chased the manager and said about someone coming to check the electrics, which would not be happening until tomorrow afternoon. I told him that I'm a retired electrical engineer and that IMO it should be safe after 24 hours of no more water ingress. So he gave me the go ahead to inspect it.
I did so, dry as a dead dingos donger, so I switched it all back on again and told him it was fine. They are still sending someone tomorrow to satisfy themselves, wasting more money.
Just have to let the freezers chill down and then tomorrow retrieve all the food from family members freezers and bring back home again