As suspected, that quote attributed to Rhoda Grant was a blatant lie.
Consultation about any proposed change to the law never just hears from one lobby - and quite rightly takes into account the vested interests of those who are opposed to change, as well as those seeking change. Good consultation encompasses the additional views of people without vested interests and especially those who have no financial or criminal interests in the outcome. While the opinions of people who buy and sell sex should be sought, their voices shouldn't be given any greater weight than any other lobby in the consultation. The sale and purchase of sex doesn't just affect the sellers and buyers after all.