I take it that you've already searched on this board for FRs for the lady in question, without success?
Another board where you'll find reviews for ladies in GB is punternet.
Both the above are national, and free.
Captain 69 will let you search free to see if she has any FRs, but to read them, you need to be a member, which costs something, but not very much.
I don't think you've indicated the part of the country where the lady in question works? There are various local boards covering Manchester/Liverpool, Newcastle & the Tyne, and Scotland which might help.
Not a few ladies who use AW also have web-sites of their own which often carry links to their FRs.
Then, of course, there is nice friendly Google! Try googling "mary-jane escort wherever-on-sea" and see what comes up.