Totally agree HD
I did Biggin for 2 years. 1500 plus on a good summer Sunday, depending on how many of the circuits and bumps you forgot to add. 3 parallels, 21 main and grass left & right. Sky were black wi 'em. Heathrow - much more straight forward but still the pinnacle of my career.
In my view you can forget totals or origin; look at movements per runway per day. Heathrow about 680, Atlanta less than 600, Paris, O'hare & Frankfurt all less than 500. Heathrow scheduled at 98% of capacity - requires permanently optimum ATC performance and that's what makes it difficult to succeed.
But if you're good enough and can convince NATS of that they'd be mugs to turn you away. Current approach staffing is about 32 against 40 required. That requirement is certain to increase with MM and R3 and with current pass rates it won't be achieved. Overtime is currently keeping the operation going - if management ever upset the staff and they pull the plug on it Heathrow is in BIG trouble.
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