In practice it should have BRNAV, but it is in principle "airways" without. "IFR" is much more vague -- could be anything.
Like me, do you you find that curious, bookworm? 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?