Hiya, I would say you are talking roughly, �3,500 maybe a bit more
you might have to lift the some of the laminate, although carpets normally go down again ok, I take it it's not full of furniture? because if there is loads of stuff to move about it will cost more,
Are you sure it needs rewiring? why not just have it upgraded, earthing etc, as long as it was wired in pvc with copper conductors I doubt there is anything wrong with the existing, so if you just want more sockets installed have an extra couple of circuits put in, good luck, Ray
To find local registered sparky go on Nic, Eca and napit website and put postcode in this will bring up local ones for you.