Yes some of the opinions above are exactly what I was mainly thinking:
(a) Feedback transaction with girls whose feedback slowed down in order to boost them.
(b) Someone trying to collect feedback for himself to see girls who require x amount of +ve feedback.
(c) Make himself looking credible to later validate PG scam profiles.
I doubt that a punter – even one on a mission could punt in so many different areas of London in 1-2 days (Bayswater, Canary Wharf, Edmonton, Barnet, Wandsworth, etc), not to mention that one of the girls (Sexc Leah) is touring in Bristol for some time now. Surely it is possible to manage it but it is simply not probable. And I find it very unlikely to be someone who all of a sudden contacted and chased all the girls he saw over a larger period for feedback. And if that was the case you would expect to get all the feedback exchange done in 2-3 of days + he could also mention in his feedback when the actual meeting took place.