Yes Dervel, it's just guidance to beef up what the Police and CPS should have been doing anyway, which is looking at how the accused knew he had reasonable belief in consent.
It's a real shame that it has been misinterpreted as some kind of change in the law, or that men are now guilty until proven innocent, or that, in order to have sex now, you need written consent in triplicate, or any of the other rape myths that seem to have been pedaled out.
Just clarification on the investigation stage of rape allegations(no change from how it should have been done), not in how evidence will be treated in court.
It might be illuminating to your Police friend, who, if I'm honest, shouldn't be working anywhere near women who have been raped, her lack of belief will be palpable for women who already know they won't be believed, and might even be contributing to women not going through with prosecutions. (Thus 'proving' her point)