Thanks to everyone for their kind advice and insights into my dilemma, it's always good to have a healthy debate!
My original concern was that the system that has been set up would work at all, as the renovation works had been completed and all the cables had were already buried in the walls- hence my horror when it was suggested 3 cables were necessary, when I had only got two in the main TV room.
Incidentally, I have have subsequently called the company back, and spoke with an engineer with a bit more experience with distribution than the installers that showed up.
I was just back from nights, but the gist was as follows:
- He actually confirmed that 2 cables are fine to receive HD and distribute terrestrial TV around the house.
- With 2 cables, I will not be able to distribute SkyTV to the other rooms using Magic eye. The only way then to get Sky in the other rooms would be to have a second sky box for multi room.
In the other rooms I have already installed a Triplex Triax 304102 modular plate to the single coax cable laid by the original installer.
See:
Triax TV/FM/SAT Outlet Plate (Triplexed) 304102 - dastechnology.co.uk
Guys, I've established that 2 cables are sufficient (phew!).
What are your thoughts on distribution of Sky TV in the other rooms not being possible? Is what he said true that distribution of Sky is not possible without successive boxes?
Will I still get HD quality picture in the other rooms?