Gay MPs and others
Philip Hensher on MPs and admitting or concealing gayness, and Andy Beckett on being gay in the Commons (House of, though does include anecdotes about cruising on Clapham of the ilk). Distinguished by her absence (and it is all pretty much about gay men) from these accounts is Maureen Colquhoun, who, however unwilling her outing, does predate anyone else mentioned (1976 - okay, it ruined her career, but it would have been nice to have mentioned her).
Diane Taylor talks to the women whose spouses hid their homosexuality.
Gareth McLean points out that we are not yet in a happy post-closet utopian wonderland:
[T]here are those who use their disdain for mendacity as a cover for homophobia. For them, it is the gayness that's the problem, but handily the subject of their irrational loathing aids the legitimisation of their bigotry.
It's this fig-leaf morality that the Sun invokes when questioned on its motives for pursuing a public figure who has done nothing more illegal or immoral than having relationships with those he finds attractive.