Easy answer to that - none whatsoever. The UK no longer has sufficient aerodromes, training aircraft or QFIs to support anything more then the handful of military pilots undergoing flying training these days....
So coping with a pilot training surge requirement? No chance whatsoever
With respect BEagle, this is a rather FW-centric viewpoint. The RAF has some helicopters as well, and a majority stake in a helicopter flying training outfit. Said outfit not only has the ability to cope with a surge in numbers of trainees but - shock horror! - appears to be coping very nicely with just such a surge as we speak.
Now one hears that, beyond Shawbury, there are significant problems delivering new crews to the front line units - but your post relates to training aircraft/empires rather than OCU-level issues. And a nasty cynical person would suggest that any current surge at Shawbury is only to build up a pool of people ready for the train wreck which will be MFTS. But, right now, the rotary side of the sausage machine is in fine fettle. Producing mere chipolatas compared to your heroic FW bratties, of course, but still producing
.