Sorry about that yum, norm the dog is wrong, it is not an old fashioned way its more modern that it ever has been to use a fused spur, and dont know where he got the idea of calling it a blank socket almcd was a bit more on the ball with his answer though.
Sometimes for some strange reason you can get one single socket in a house wired up to the fuse board on its own (and there are many reasons for this and the main one in the kitchen is that there has been an electrick cooker point there that has its own circuit and has been changed to a normal 13A socket ) so it could be the fuse has blown or tripped at the mains board,and as almcd007 also said a wire might have come loose inside the socket .
Sorry to ttp at first as but that sometimes is my immediate reaction sometimes.
Anyway I do not have enough info on what the prob is I need a few more details about the prob as sorry your quiestion was a bit basic, if you havent fixed it by now let us know and will try to help.