If you want to hang out - or have a chance of hanging out with TS girls - especially the good looking ones - then you need to take yourself off to some of the really happening clubs and also the fetish clubs. TS girls often feel most comfortable in gay clubs - and often like to hang with gay guys (even if sexually they are not really into each other), as they party hard and because gay clubs provide a safe, non-judgmental environment. Club Fire under the railway arches in Vauxhall attracts many trans girls, as does Heaven in Charing Cross on Monday nights. TS girls also love to dress up and some of them like to hang out in the fetish world - the weird and wonderful cabaret bizarre ....so clubs like Torture Garden, Pedestal, etc....again, these places are inhabited by a cool and non-judgmental crowd, who love to party (often any particular kinks/fetishes are completely secondary to this), so they are comfortable in them.
Of course there are also clubs designed specifically for rans girls and TS/TV admirers - Wayout Club being the most well known (though now only once monthly I believe). Totally different kind of atmosphere and for the most part with a totally different kind of crowd.....think cross dressers, transvestites who only dress for occasionally going out to such places, drag queens etc. The kind of male clientele are different too - squarer types who are only there because they are into trans girls. You do usually get a few better looking TS girls, but often late doors and often they are only there to pick up potential clients.
Bombshell in Soho (used to be weekly on a Wednesday night) is also a place where you get a mixture of all types....various types of trans/drag girls, gay guys, admirer types.
Take your pick!