I had asked because of this:
"Aerobatics in powered aircraft
Before entering an aerobatic competition in a powered aircraft , you must first hold a full pilots licence. Types of licence privileges can vary from country to country, but in the UK this is, at minimum, a private pilot licence (Group A aircraft). "
Taken from the British Aerobatics Association website:
Training
I noticed they say "full pilots license" and at a minimum a private pilots license. No mention of NPPL, so it got me thinking.
Personally, to grant privileges to dance in the sky to a full PPL holder and not an NPPL holder makes no sense. In aerobatics you're not flying cross country or into IMC. Your flying a light aircraft in a controlled space of air for the competition or recreation. You just need to know how to control your aircraft, something which is taught at both license levels!