I have plenty of positive feedback on my AW account but I would not visit a prossie who insists on me having feedback. When I punt it's my decision where my hard earned cash goes. If a prossie chooses this reviews only path, she will see my cash moving away on the distant horizon.
Agreed as above, £200 is a high layout and if she was any good in 6 years someone on this forum would have reviewed her. Search UKP reviews, choose a reliable good service prossie and away you go.