I'm not sure what you think you've tuned in to, but the BBC themselves claim to be on Astra 2D.
http://www.bbc.co.uk/reception/info/...quencies.shtml
However, if you have bought your system at B&Q it is unlikely to be one carrying the Freesat logo:
... and so won't give you the official Freesat EPG. Or the BBC iPlayer (once it launches).
Shoud've gone to Radio Rentals! (well, maybe not, but just about anywhere other than B&Q to be honest...)