Got up, had showers, went to make a cup of tea, no water!
The pump wasnt running so it seemed like an electrical fault. I checked things over, there was power to the pump, so it looked like a pump problem. After removing the pump it became clear that the presure switch had gone open circuit. It was a sealed unit so not repairable. Off in the car to Limekiln Chandlers in Stourport. They didnt have a ‘Flojet’, but a ‘Jabsco’ looked to be almost a drop in replacement. So after about half an hour with my head stuck up under the fore deck we had water again.
Spent the rest of the day going for walks in the park and a bit more shopping, including two thermal vests from Netto!