Run cables in external wall cavity

[allthatpebbledash]

In the image below they’ve managed to install sockets without any of the wires on show.

 

The socket back box I assume has been fitted into the bricks by cutting a hole. But what about the wiring. How can you achieve this look.

 

Have they ran the cables behind the wall as in the cavity? Is this allowed with insulation in the cavity, on what looks like an external wall.

 

Thanks.

 

[Super_Paulie]

Could be a fake wall I guess.

 

Or could have ran the cable along the mortar lines and then repointed? It would still be within wiring zones by the looks of it.

 

I went the conduit route myself.

[dpmiller]

brick slips?