I met with Massnow.
The shirtless pics in his rentmasseur profile are reasonably accurate. He's hairier and has more of a muscular, rugby-build, with no sign of an 8-pack. Handsome, mixed-race guy from Brazil. Very friendly, conversational, good English. The pictures in his ad showing a massage session are not him, because he is free of tats.
As John Galt reported, the massage moved quickly to sensual. The massage itself was more Swedish with a little deep-tissue here and there. For my tastes, there was too little actual massage before it move to sensual and then to erotic. Maybe it was because what I had communicated to him in advance about what I was looking for in a session.
The session delivered everything I asked for, done mostly well and with passion. But it felt like an express meal service. I like longish sessions, with a slow build-up. This was not. After I left, I realized that my 2-hour session was only 1-hour, and that I had paid for 2 hours. I thought that the time had flown by and didn't think to look at the time until I was out on the street in the throngs in Chinatown.
Would I repeat? No. London has so many other choices. My London fav remains MasseurBrazil, who is currently traveling.