I keep my eye on that spot and there's not much more than a rapid turnover of chinese and brazilian's - all those ive seen are long gone, one was a Chinese 40's lass who gave me a great massage there last year (Vauxhall station). Might be a vivastreet roulette job with postcode: sw8 or sw9, and the search radius set to however far you'd be willing to walk. There are a few small brothels that ive messaged, not visited, around Oval station - again, you'll find them on Vivastreet. A perpetual dearth of options for that spot, sadly.