However, my current Master Socket is located in box room upstairs and would require a lot of furniture removal to access it. Can a new Master Socket for Infinity be installed in the hallway (where the cable comes into the house) - effectively inline before reaching the ols M/S - but still have the other room extensions running from the old M/S and Infinity Modum/Hub run from the new M/S?
If you are lucky enough to get an Openreach engineer I'm sure he/she will help you do that however if it is a contractor that you get then I doubt if he would be willing to move the master socket. They are paid per job and as such want to be as quick as possible but you could always ask.
When you place your order you should explain what you want and request that an Openreach engineer is sent to do the installation. It might fall on deaf ears though.