No that's quite normal.
Do you have a corded phone at all? Or can you borrow one? Check that all of the sockets (inc the master) have a dial tone, so far (based on what you have said) only the master should. That would indicated that the other sockets have been disconnected.
Back to the reason for moving the router, could a Powerline adaptor (that can boost the wifi) be of use perhaps?
There are quite a few,
Something like this from BT would be a good idea.
Do you have a Maplin nearby? They are likely to have a sale on and you could pick up a bargain, sadly they are (as you may know) going bust.
I have a maplin near my house and I’ll probably pick that up on Monday or Tuesday because Monday is a bank holiday.
Also I just checked the telephone and every time I plugged it into a socket that was not the master socket it wouldn’t work so I think the extensions have been disconnected.
Excellent, well that basically confirms the extensions are removed. Your options therefore are:
Investigate (carefully) inside the bottom of the master socket, and see if there are any wires that may go off else where to an extension, and try reconnecting them (doing this could affect the speed of the broadband), if you did find a suitable socket to reconnect (and based on this link: https://mega.nz/#F!gmgx1CLC!rGjYLhYJRcyTZ88XQ9KX3A) pic 1 or 3 seem to look like full sized sockets that could be reused, you could set up a "data" extension, and we could help you do that.
You buy a HomePlug and extend the wifi Signal using your home electrical wiring.
With Maplin be advised, they won't refund you if it doesn't work. Just a heads up.
I will send you a Private Message (PM) with some info on them. Look out for the Envelope symbol which is towards the top right of this forum, click on it. It will display a Red number once I have sent the message.
Try connecting the blue & blue/white pair that are coiled in the master socket to terminals 2&5 in the removable faceplate. Re-connect faceplate and see if a) There is an impact on your broadband speed at the master. b) The hub works in the extension socket.
If speed is acceptable, leave connected, if not revert to planB of powerline adaptors.