if your doing a house up I personally would run Ethernet through the house. take all the cables up to the loft and make sure there's power up there. then you just put an Ethernet switch up there, then you hook up your router to the master phone socket. and connect an Ethernet to one of the sockets and that's it, wired internet connections across the house
I am a geek though but wireless can be a bit pants depending on your property but I get dead spots which can be a pain.
if it's just the odd connection and you don't want to bother running cables then powerline adapters are your friend.
also note, sky q boxes should be adding powerline capability, I think they also act as Wi-Fi repeaters.