Just out of interest, are there any area folks who operate 2 widely-spaced sectors simultaneously on different frequencies? I know EGGP do EGCN approach from Merseyside, but I don't know if they are licenced to do both at the same time?
I went on a famil trip to EGGP about 10 years ago. At that time they told me that the controller working EGGP wasn't permitted to work EGCN at the same time. And if I recall correctly the radar screens were set up so the controllers worked back to back, so they couldn't see both screens at the same time. (That may have changed since then)