Sorry to pee on your corn flakes chaps, but there is something written in one of those mindless ICAO docs that tries to standardise ATCC callsigns. I'm not convinced it is enshrined in UK law but, assuming the UK hasn't filed a difference, I guess there will be a common name. Certainly the mil adopted "London Mil" when Swanwick/LATCC(Mil) merged.
Pennine Radar, what's that? I thought you lot off-loaded that particular task to LATCC(Mil) a few years back.