I wonder if anyone has noted the new and updated Live tracking over UK Airspace... absolutely brilliant, before, it was only available for Amsterdam but now they are covering Milan, Paris etc... albiet with delay of 15 minutes for security purposes, however you can subscribe for a live feed with delay of 40 seconds..
heres the link
Casper - Live Aircraft Tracking
This coupled with your Airband reciever and Heathrow Adbs Arrivals should be great fun...
enjoy !!!