Oldie Genius 266

[boiswood]

Remark Made by unclued 8a & 9 ; referring to Kng George IV (4 8) What was said by whom?
5d Technique in entering arena satisfied disciplinarian (9)
8d Happiest just stopping defeat (9)

No one else seems to tackle the Oldie Magazine crosswords, I wonder why?

Boiswood

[bibblebub]

8d BrightEST

[bibblebub]

5d if 8 letters then MARTINET would work

[notobene]

5d Methodist?

[Stitchmate]

Have worked it out as Beau Brummell who said Avenly, who's your fat friend? about the Prince Regent. A lot of references give Brummell with one L but it needs two to fit.