Would be interesting to check this for real, but off the top of my head my estimate would be more like 1% (not for London, but in general).<p>Although there was this other research that showed that men (maybe also women, can't remember) are very quick to adapt their "demands" to the available offering. That is if at a party, you might settle for someone from the 10% of attractiveness at that party, even if the attractiveness compared to the whole population might be a lot less.