Thank you for the reply - they've coming into the loft. I've put a little camera up there so I can see them, but they're so quick-moving and there are so many damn pipes and rafters and insulation bits up there it's difficult to see where they're coming from.
I have had pest control out already...
I've had rats coming into the house (miserable!) and I've been advised that rat droppings have been found in the surface water drains.
I had the drainage chaps out and they've put a one-way valve in the manhole that's nearest the big drain in the road. That manhole is marked on the plan as...
Through a combination of a cramped kitchen with a stupid layout and a total fool (me) I have managed to cut into the microwave cable, literally slice into it with a sharp knife.
There was a flash, bang and the MCB for the kitchen sockets tripped. Once I had stood there for five minutes...
Thank you very much for your quick response, I will ask an electrician to assess the cable run in person as I really don't want to go down to a 7.5kw shower.
I need to replace a knackered electric shower which is 9.5kw, 6mm wiring and on a 32A MCB.
It's a Triton so I asked them for the nearest replacement model and they said my cable and breaker are only suitable for 7.5kw shower (although they also said I could put a 9.5kw on 6mil if "I had no...