The judgment is available here:
www.judiciary.uk/judgments/crowter-v-secretary-of-state-for-health-and-social-care/
It's worth reading at least the summary, although the full judgment has a lot of interesting stuff in it.
It's a very good thing that this case failed.
The claimants argued for personhood and human rights for the foetus, including right to life and the right to not be discriminated against. Several countries and states have gone down the route of ascribing personhood and human rights to foetuses and it always leads to a very dark place for women's rights in pregnancy.
Even if you are 100% anti-abortion there are many good reasons to oppose this approach. This article outlines some of them:
onlinelibrary.wiley.com/doi/full/10.1002/hast.791
It's not necessary to grant the foetus personhood and human rights in order to impose limits on abortion (if that's what you want to do). We know this because we have limits in the UK without going there.
The claimants' other argument was that having a different time limit gives the message that disabled people's lives are worth less, that this affects societal attitudes towards all disabled people and therefore this is indirect discrimination.
I have some sympathy with this view but I agree with the judge - even if there were a causal link, this would be lawful because it's a proportionate means of achieving a legitimate aim.
There are far more obvious government actions that give the message that disabled people's lives are worth less - start with the benefit system and the shockingly bad state of social care and support. I agree with PP who have questioned why the claimants are not campaigning around these.