A bit out of date!
Just looked at the above website callsigns and just a tad out of date.
ASCOT 4000-4019 HERCULES RAF INBOUND/OUTBOUND HONGKONG
ASCOT 4020-4039 HERCULES RAF INBOUND/OUTBOUND SARDINIA
I wish we still did Hongkong and sardinia!!!
Anyway I'll stick with my mystery callsign in the sandbox and lets keep it a mystery.... more fun that way!