....That said, there is also the obvious problem that the old NCB training system has ceased to function. It's effectively impossible now, to qualify....
No, its not impossible. The "NCB" system has gone, but you don't need that to demonstrate competence, which is what's required.
Alternative qualifications are out there already, but competence is about more than paper qualifications.
You need to read back a little way, in this thread. The MQ qualifications specifically require experience IN A BRITISH COAL MINE. That's why I didn't do the Mine Surveyor exam, and why the 2009 one was cancelled ; you can't get the required experience, so it is pointless to take the exam.
The authorities regularly turn down South Africans and Canadians with ample experience and excellent training, for the same reason.
It's becoming irrelevant, though. There are more mines outside the Regs than within them, there will be no-one left who qualified within five or seven years. The dinosaurs in the MQB will be dragged off into retirement and the world will still be turning.
plus ca change, plus c'est le meme chose