Frogs - good point.
Same-sex couples I know who have tried to adopt have had a very very hard time in practice from local council / social services adoption panels as the law stands now, though. Very few seem to get through the last hurdle - is that where a panel including lay people (often with faith reprsentatives) have a say? I admit to being a bit hazy about the process, but an aquaintance who works in a London council adoption dept, and freinds who have tried to adopt, are not exactly brimming with confidence that there is a level playing field in existing secular services.
Actually, I have some sympathy with birth parents who would like to know that their biological child was brought up in the same faith as them. I had a best friend at school who had been born to a Jewish mother, and was adopted by an orthodox Jewish family. And given the importance of maternal line in Judaism, you can see that people would feel something. Under the new rules could someone state a preference about the family their child goes to?
I don't know how this can be sorted...I don't think the law should have loopholes, I don't think discrimination should be acceptable in any state-overseen operation, but I'm not unsympathetic to people having feelings about how the child is placed.