The irony to your question, living in the UK, is there is more aviation passion and interest in spotting and aviation in general that the UK should be the one place in the world that the enjoyment of listening to ATC, via this site or any other should be a given. I bought my first airband radio in London back in the early 80's and a few more thereafter also from the various aviation stores, the main one being the Aviation Hobby Shop in West Drayton.
The fact that at any one time if you visit a UK airport, not just the busy LHRs, GATs or MANs, there may be several enthusiasts or spotters with radios listening to various ATC freqs. and enjoying the love of the hobby. Whether it be spotting, taking pics or just sitting on a lawn chair watching peacefully, landings and takeoffs, without KGB type authorities bothering you because you are holding a radio. The only time police or security get concerned is when "we are parked on sides of roads we shouldn't be" or private parking areas. For the most part it's unwarranted crowd control and concerns of potential terrorist harm by individuals that have no interest in the enjoyment of aviation but more so to inflict harm, and I fully support the authorities to be concerned and intervene.
But back to the question at hand, the UK should be the one place in the world where almost every airfield should be able to broadcast feeds over the net.
