I covered this a little earlier in the week. Some of the churches in the UK have been very vocal about the fact that they do not want to be forced into carrying out same-sex marriages as the government rolls out equality for all. They have mounted letter campaigns, phone bank campaigns, TV ads, taken part in consultations, etc. So the government took them at their word and is making it illegal for them to carry out same-sex marriages. This will protect them in law from being sued.
Now, as you will read, the Church of Wales is saying that this is going to far. They now want the right to be able to choose instead. In other words they want the ability to say no and to discriminate in the own terms I suppose. It may be too late and it looks like you got what you wanted in the first place, even though I don’t agree with it. It will be interesting to see what happens next.