I never even got near the beacon. I was vectored north of it by 3.5nm. Just as I was thinking, "WTF?!", my well-qualified accomplice pointed out that we'd blasted straight through the localiser. It happened to be tuned in, but being an NDB/DME approach I hadn't included it in the scan. At this point there was no way I'd be within 30deg for a non-prec approach so since I'd broken cloud I just trundled on in visually still thinking, "WTF?!".