Nothing.
The squirearchy term it a 'capability holiday' - if you've ever heard of a more stupid description, I'd like to know of it.
Basically it's yet another capability our underfunded, overstretched rather pathetic excuse for a modern air force has given up as another well-past its sell-by date aeroplane is retired. A bit like the time we abandoned strategic bombing.....good job the South Atlantic war wasn't 2 years later or Argentina would own the Islas Malvinas by now - and people wouldn't have the joy of pointless trips to MPA to look forward to!
Hang on...