not sure of the relevance, but there was a scheme mooted several years ago, which was to allow subscribers to follow real time radar traces on their pc, via the internet. I seem to remember that it was aimed at commercial companies interested in tracking flights, and enthusiasts.
I remember this too - It was being developed by NATS actually, and they actually had a website up which IIRC asked those interested to register - I did but never heard anything. When I next checked the site it said that development had been put 'on hold' for technical reasons. Trying to think of what it was called, but can't right now !