VFR Real Scenery is an add-on for Microsoft Flight Simulator X. The demo is now available for this add-on, but you'll need the full version of Flight Simulator X to try it out. Here's what the creator of this add-on, Just Flight, had to say about it:

"Realistic scenery is all very well, but there really is no substitute for the real thing! Just Flight's VFR Real Scenery is an incredible program that uses the very latest digital aerial images of the UK to transform Flight Simulator X into the real landscape you can see from the air.

We’ve teamed up with Infoterra Ltd, a leader in the provision of aerial data, for the use of the GeoPerspectives countrywide archive, and the result is four brilliant photographic scenery packages for Flight Simulator X that bring the real landscape straight to your PC."