From the EU Referendum blog:

Still, an important victory was won, though it has not been widely reported. As 365Gay.com reports, a proviso was added that the European Charter of Fundamental Rights, which is an integral part of the treaty, will be implemented without the rights it grants to gays and lesbians. On the whole, it seems unlikely that provisos like that, negotiated by the Prime Minister and the opposition are worth anything once you are implementing European legislation.