Petition to prohibit discrimination against transsexuals.
I understand from friends in the UK that this one is rather more important than the first one I passed along because, while the British government is apparently standing firm against demand from religious leaders that they be allowed to discriminate against gays and lesbians, the government is not prepared to extend the same protection to those whose gender is ambiguous or who have changed gender. Such people will still be at risk of arbitrarily being denied service in shops, restaurants, even education and health care.
As with the first, I'd be happy to sign it myself, but I'm not allowed to do so. But those of you with British citizenship or residency can, and I hope you will.