Can confirm B&S. Location is a posh basement apartment in South Ken a few steps down from HOD.
Queue of girls all claiming to be Aiko or her sister. I saw this thread literally as I was leaving for the punt and was prepared for the B&S - would have walked but for the twist which was that out of the three girls I saw, two were stunning, while one was very attractive. The one I picked for the punt had excellent English and I actually couldn't place the accent (I don't punt with Orientals much but it was definitely softer than the usual Thai accent and her English was vastly superior to the usual Chinese girl)
I went for OWO and had sex in various positions and paid £100 for 30 minutes - didn't bother asking for more services and definitely overpaid (and they tried scamming me by asking for £150 for half an hour to start with - I was about to walk after meeting the third girl and only stayed with her eventually because the little guy needed some loving and she was petite, with a magnificent rack, pretty much my ideal body type) but I got the impression one could negotiate on both price and services.