Its because there is an increasing religious back lash against gay and LGBTQ rights from the Evangelical Christians - inspired by their US cousins - in Britain over the last two years. I've been going to Canal Street in Manchester for years and we've never had, in my memory, the religious nut jobs picketting it. We do now. I was even stopped in the street by some religious lunatic who said I was going to hell for my hairstyle (a very long mohawk) because Gays, Goths, Punks, Satanists are all the same thing and we're leading an immoral anti Christian lifestyle and "have to be stopped." before we destroy society, and ourselves.
At work a Salvation Army chappy said there is no such thing as Homophobia.
At organisations such as Churches Together (ecumencial organisation) Im finding that a lot of what Id have thought of as mainstream denominations (URC, Methodfist, low-Church Anglicans) are going Evangelical Literalist happy-clappy where they used to be quite middle of the road and with imported American or South African ministers.....
We even have one or two of these loons outside my church on a Sunday during the time of our service picketing saying we're not Chrisitan, we're promoting Sin, we Hate the Family all because we are pro-Gay (hellooo I go and minister there).