I don't want to alarm you but that wiring featured in pic2 and 3 which is wraped around the heating pipes is simply not safe and you need to move it ASAP.
Cheers. That wiring is currently isolated at the consumer unit with a big label on the MCB indicating there's a fault as it's the old immersion heater circuit and trips the breaker whenever it's on with a load attached (so much for the original idea of using it for the boiler feed!).
I tucked it up there only for the purposes of the photo - so it's not normally next to the heating pipes.
That wire might be the subject of a whole new thread..... there's some tracing to do and then I think a sparky will get a call.
Thanks though!
Leigh.