Since we are talking about fundamentals here in the UK all eyes are on inflation. At the moment a strong Pound Sterling is keeping inflation in check (due to lowered costs of imported goods). Should the pound fall then inflation goes up if inflation goes up then so do interest rates. Now if interest rates go up then so does the Pound! If you can get your head around that then you can see that GBP is unlikely to fall anytime soon. There is simply too much upward pressure on it it's all in the charts!
Good luck if you are thinking it's going to fall anytime soon!
Z