Think all BL related busts happened in the US where the cops are crazy and energetic. In the UK, you could probably book a convention centre and, as long as you paid the bill, nobody would raise an eyebrow. Some good things left about the old country.
That said, isn't there some police squad running around the West Country and not playing strictly by the rules? Cops who watch too many US police dramas can go funny in the head and live out some nutty fantasies. As long as only the poor dopefiend suffers, they generally do so with impunity.