MASOR East are still up at West Drayton and their c/s is London (Mil). LJAO are at Swanwick, hence the c/s to differentiate the two units. Perhaps when MASOR move down to Swanwick in late 2007 the whole lot will be Swanwick (Mil), just as MASOR West was assimilated on its move. Don't think its been decided yet.
Why choose c/s Southern Radar when LJAO also control stuff coming out of EGOV heading for EGNT?
For nPC (and not forgetting MACC) the airspace boundaries will change. NAS Shelf problem anyone?