It seems very clear that the CAA means B-RNAV to be 'airways' mandatory above FL095, the AIP section equivalent to Schedule 5 includes it (paragraph 5.2.5, GEN 1.5), yet Schedule 5 doesn't! Is it just an oversight in recent ANO amendments?
Dunno. Perhaps the lawyers consider it covered by:
"Radio communication and radio navigation equipment capable of enabling the aircraft to
be navigated along the intended route"
?