Plasterers - How hard to install feature wall inserts?

['ssv']

I wonder if these will be good to install behind a wall mounted tv?
I want to wall mount a tv in the b.room and lounge but unsure of how to mount gpo's...

 

[VS 5.0]

We recently had a TV wall mounted with a double power point installed in the wall behind the TV, along with plates for the aerial, HDMI cables etc that are also run through the wall.

The wall mounting bracket allows plenty of clearance between the rear of the TV and the wall so there wasn't any need to recess anything into the wall.

This was in a double brick cavity wall.