I lived through the Blair government. Some left wing people were upset because he was on the right of the Labour Party, but things did indeed get a lot better in those ten years. Not everything by any stretch of the imagination. But no one expected him to make things better for gay people but not only did the legal situation change but the mood music affected the nation’s morals for the better for a while. It became socially far less acceptable to hate on gay folk. Could happen again, but I get why you might be cynical.