I thought about you earlier OP as I commented in the early days under a different name. Spent half an hour trying to find it and just caught up since early May!
So pleased you are still pursuing this, I hope you're able to get any legal help you need. Thank you for keeping us updated.
Anyway with regards to the previous thread
I am so INFURIATED by some of the responses from other women. Fortunately it seems to be a minority. But a harsh reminder that we really do have a long way to go to for women's rights if other women are prepared to throw pregnant women under a bus just to protect themselves. It's not the slightest bit logical that discrimination should be allowed to continue in some areas to improve them in others 
One of the PP said she wouldn't recruit a pregnant woman to protect her own livelihood. Well guess what, pregnant women have rights to protect their own livelihood too. So thank goodness we are not obliged to tell you. Although maybe best we did as wouldn't want to work for you anyway with that attitude.
While recruitment is a pain in the backside (it was a minor part of my role and I hated it, but accepted it was part of the role) I don't really see what difference it makes how long someone has been working for you before they need mat leave. Is your business going to actually suffer that much or are you happy to discriminate against women because they've caused you a bit of extra work?
Maternity cover or adjustments are needed whether the person has been there for 3 months or 3 years ? And if your business is that fragile you can't cope with someone taking maternity leave entitlement then you've probably got bigger problems in your business. Or you're just not very good at managing it. So good luck with that.