VFR scenery: no it doesn't add buildings etc. It is just the ground textures.
Take a look at their website - it's pretty comprehensive:
http://www.visualflight.co.uk/photoscenery/intro.htm
If you're after some UK airport addons, I hear that this guy has done some good work:
http://www.uk2000scenery.bizland.com/puplic/index.htm
I haven't tried it, but I'm quite tempted to get the Midlands airports.
There are one or two ATC packages - the only one I can think of is called Radar Contact. Don't know too much about that though...
Happy (virtual) landings!