For all the asking and leeching that you've been doing you haven't really been paying attention to what's been written have you? Suggest you do more complete research and understand the market, it's all there to be very clearly and easily determined in all the reporting and commenting shared over the years here.
One person's taste is not the same as another's, "Rick's" expectations and needs from a meet are not likely to be your own, especially when you haven't even tried the kind of service he's familiar with. He didn't deceive you, you failed to understand what you're looking for and choose appropriately.
Numerous red flags for this encounter are discernible even from your limited recounting that would've persuaded many others to look elsewhere. There are plenty of "cheap" Chinese offerings in parlours and flats across SE London that have been mentioned more often which might've generated better outcomes. If you discounted them because of location then you have to reconsider your fixation on your criteria, but the only reason I can think of to insist on Plumstead if you are healthy enough to "bang" is due to court mandate.
If you can afford 100 for 30 mins then why not use the much-accounted Thai agencies? The things that went wrong with this outing are all on you, there was little real deceit, certainly nothing novel and nothing that couldn't have been avoided.