The G-A-Y bar on Old Compton Street is one of the queer hubs of the gay village. Cheap drinks and loud music makes this a good meeting spot before going out.
The Chinatown outlet of Ku Bar is one of the go-to gay bars in central London.
The Mercer Street location is ideal if you're wanting to base yourself in Covent Garden. You'll be within easy reach of everything you need.