I've recently found myself in a situation very very similar to Underahat. I have a female friend blatantly harassed by a male officer, and she's unwilling to do anything because he controls her career advancement.
Think boss kissing subordinate during a 6000 debrief; or an Air Cadet officer kissing an over-18 cadet; or an AFCO boss kissing a candidate following a debrief; and you're not right, but you're not far wrong.
Acceptable? No. Does she "work" for him? Technically. Does she feel harassed? Yes. Is she worried about what might happen? Damn right.
I'd encourage Underahat to find out as much as he can, but if he's right, hang the bastard out to dry.
Anyone who knows about how the RAF handle harrasment claims, I'd appreciate some help I could possibly pass on.