Porco,
I'm not actually saying one side is better (though one most clearly is), it's just that when this comes around we always hear the "it's just too busy, just too congested". One way to counter that argument is to analyse all sorts of numbers and come up with a superb presentation as to why that is nonsense. As I cannot be bothered to do that (and wouldn't know how to even if I could) I just say "It's busier and more congested over there, and they quite easily manage to do what you say you cannot". In my mind it has the same effect.
So coventry has less than 20 jet movements a day. Wow. better not tell Porco how that would be handled in the US, let's say it's a good chance there wouldn't even be a tower. I've flown at airports with part 121 ops and no controller. They have ILS's though, very good for keeping in practice when no controllers slowing things up
Just make sure you get out of the way when the 757 announces on the common frequency he is turning base to final.
So porco, you didn't answer my question. If everything within 30 miles of LHR is squawking mode S, will you need such a large surface area??