“Certainly not!” she replies indignantly. “What do you think I am?”
“We’ve already established that,” Shaw is meant to have said. “Now we’re just haggling over price!”
... that's now about to be the situation in England, Wales and Northern Ireland.
Offer to provide a sexual service for any financial arrangement, even just once and even if compelled to do so, and you're a prostitute forever according to section 51.
It was pointed out in the Lords, without contradiction from the government, that this would cover, for example, kissograms and people selling kisses at village fetes for charity.
Fortunately there don't seem to be any adverse consequences, but it does mean someone can happily employ you as a prostitute without failing at risk of section 52 'Causing or inciting prostitution for gain'. You're already a prostitute, according to this law, so no offence is caused by asking you to work as one!