Judging by the size difference in the cables in the r/h fuse I'd say the small one shouldn't be in there full stop, and there appears to be no earth to the metal casing of your intercom, or others for that matter, get a professional in
Best for fixing in thermalise would be brown plug 6mm hole, drill through plasterboard and into block work, bang plug through plasterboard with screw inserted to get it all the way through, when fixing pole do not over tighten screw or it will pull the pboard back towards the block behind...
Aluminium lamps that project the heat down rather than into the roof would solve the heat issue at a fraction of the cost of led's. think sylvania make them, have had several experiences where cables inside spotlight have melted due to insulation and fixed it by changing lamp holders and putting...
The pipes won't heat up as there will be no flow through them, ie nowhere for the hot water to go, one is flow the other is return, connect the 2 together and fire up the heating and then they will get hot
Could you not turn the connector on there and go into a 135deg bend to get the pipe tight back to the wall? Get a enclosed cistern with back to wall pan, then all you need is a 90deg and pan connector in behind, you will have more room for pipe work if you get an enclosed cistern (one in a...