Yes if you want us to hide the wires behind a plasterboard wall then this is what we will need to do. The TV Wall Mounting engineer can cut a hole in the wall behind the screen and then another hole below and pull cables through the holes. Also, most new buildings are of this type of construction so its great for wall mounting your TV. For external walls, the gap behind the wall would not be enough to pull the wires through and a groove would have to cut into the plasterboard and plastered over once the cables have been laid in the wall. or alternatively, we can take the cables external and put them in conduit and then come back in behind the TV.