Well, finally got the wall mount today so thought...lets go for it!!
Luckily the mount spanned two studs so I didnt have to open up the plasterboard to fix a noggin
I used a dry lining double box for the cables to come through, unfortunately ,where I planned to put it I hit a noggin right bang in the middle

After a bit of drilling and notching it fitted.At least there were no others between that and the bottom
so after trimming a blank plate this is what it looked like behind the tv...
And after the tv is fitted...
The power cord came out with the other cables behind the tv but it was in conduit upto the point of entry...below it came out in its own box.....
I have brought them out at the bottom like that as I havent decided on where my av rack or even some sork of unit (like the one shown next) is going.
The finsihed product so far........next job is to mount the front,left and right speakers with cables concealed...but for the moment..its saturday night and im having a drink
please....comments,criticism welcome
Finally got round to mounting all front speakers today.
With it being a plasterboard wall and needing noggins for the speakers I decided to attack it from the back in the hallway.
This is what it looks like after putting the boards back...just needs a little filling and painting
This is what its looking like from the front......
and where all cables exit the wall from...
And almost the final result....
Just a little of decorating to do and then to decide on a new unit and av rack.
All in all very pleased how it turned out.
Ray