Ah I see - I've read the article now.
So previously, it was the same rule for single women and same sex couples - they had to pay for private IUI to prove infertility.
Now, the government have committed to improving funding for same sex couples to access NHS treatment, but they haven't done the same for single women.
Just to be clear that this is the problem - they have improved things for same sex couples but not for single women.
I'd say it's a step in the right direction and to be honest if funding only allows one or the other of these to have access to better funding, same sex couples should take priority because a couple is (as a general rule) going to be in a better position to raise a child than a single woman - not saying in all cases before I get jumped on - but statistically - and that is all you can go by when making these decisions.
I do hope in the future that everyone who wants/ needs fertility treatment will have access to it, but I'm assuming that this is a decision based on funding constraints.