Must be hard keeping your helicopter straight and level with that huge chip on your shoulder strickers
Point being, discrimination law (in the UK) prevents asking for male/female/white/black/straight/gay specifically. You can't apply the law just when it suits you.
Obviously the law is different wherever this company operates.
There is probably a very good reason for wanting a female pilot
Examples?
customers respond positively to a female pilot
That's an interesting comment, from personal experience even nowadays there are always several pax who raise their eyebrows whenever they hear a female voice from the flight deck, followed by the inevitable parking jokes!
Most employers employ female pilots because they are pilots and they were (among) the best they interviewed for the job. At least that's what I like to think.