Moving a switched socket, electric radiator and concrete walls

[MattP124]

I'm looking for advice
I have an electric radiator, cabling now running out behind where the radiator is/was installed and a concrete wall (and floor)

I removed an old bit plasterboard which had two sockets installed, this false wall had the cables runnning within in it to two sockets on the LHS
Now that has gone, I see the cabling comes straight out of the wall, in the centre, where the radiator would be.
What can I do?
I can't even imagine how the cabling was drilled into the wall.
At worst, rather than finding a way to drill behind the plaster (or hacking at it?), I would remove the sockets, but I am also struggling to find junction boxes (and I think they may be plastered in).
Open to all ideas (I've done a bit of the electrics in this new house), I can't find an electrician until February! and this seems more concrete than electrician issues
Many thanks

 

[EFLImpudence]

It seems a bit simple but - what is on the other side of the wall?

 

[MattP124]

The neighbours!
How is it Simple?
I don't want to have cabling behind the very hot radiator? How can I recess it (drilling the entire length of cable down and round to the side of radiator?)
Ah yes, it is also concrete flooring, and the cables are coming from above

 

[EFLImpudence]

The neighbours!

Ok, so there must be a cavity. Is this upstairs? Loft above?

How is it Simple?

Well, the hole cannot be curved; it must be straight

I don't want to have cabling behind the very hot radiator? How can I recess it (drilling the entire length of cable down and round to the side of radiator?)

Yes.

Ah yes, it is also concrete flooring, and the cables are coming from above

Down the cavity?

 

[MattP124]

Not in a cavity... the walls... appear to be concrete? Or brick but when measured are about 10cm thick. This is a few metres away, the other side of the chimney breast... same room, same wall

 

[MattP124]

Thank for replying, this is ground floor

 

[AndyPRK]

I'd install a double socket where the hole is (or blanking plate).

Only connect one cable to it. Leave other cable in the back box, correctly terminated.
You should connect both earths though

 

[EFLImpudence]

, this is ground floor

Then - is there a socket in a similar position in the room above?

 

[MattP124]

@AndyPRK - I could do that but then there is a cable running behind a radiator. I can't fathom how to move the socket without a lot of drilling
I would like to connect the radiator back up, there is not room to move it sideways

@EFLImpudence - fair question, my first answer is no. The boiler is above upstairs, however there is a handy (!) plug for the boiler on the floor. Not straight forward. Upstairs is at least floorboards and some space under them

 

[SUNRAY]

Not in a cavity... the walls... appear to be concrete? Or brick but when measured are about 10cm thick. This is a few metres away, the other side of the chimney breast... same room, same wallView attachment 365132

So the wall is 10cm thick and the cable goes right through it?

Into the neighbours property?

Do the cables move in and out about 4cm?