Yippee
Hi
I now have heating and hot water.
A completely new Immersion Heater, Sensor and the Heat Pump working.
The Plumber charged £80, I gave him a £20 tip for his kids.
The Sparky charged me nothing ,saying the £100 I gave him before was enough for his time.
The Immersion and Sensor cost me £90, so a winner all round.
In two hours I will be able to have a bath,I will no longer be smelling.
The underfloor heating is already beginning to warm up, the electric heaters are off.
I am a Happy Womble.