Make sure u do all the labour beforehand though mate. I had a plugpoint installed in the middle of the Chimney Breast before he came and I pulled up floorboards. If u need walls chasing then d it yourself with a bolster chisel or similar and run all the cables so he just has to come and whack the bracket up. Dont be to precise with the cabling though and dont plaster the chase till hes been as brackets vary in size and spec.

Its the best thing ive ever done mate to be honest, ive got my XBox 360 hidden in the cupboard and u can see nothing at all except the telly (ill have to get pics done), everything is hidden, and the baby gets so much attention from me because im never out of her bedroom!!!