Search AW and find some women who seem willing to provide what you want at the price you are prepared to pay (or men as you haven't stated any preferences). When you find one you might fancy look at their AW number at the bottom of their page. Copy it and paste it into the search box, top right hand of the UKPunting page. Enter, see how many favourable reviews there are and if they deliver services you like. book them, do the deed, leave a review on UKP.
There is really nothing else you need to know, except maybe, some members get very hot under the collar at newby's who ask daft questions.