In general, I think that the UK antenatal system is very inconsistent in its approach to pregnancy/infant risk factors.
Tons of info about SIDS. And rightly so, as the Back to Sleep campaign has been hugely successful in reducing the numbers of SIDS deaths.
Somewhere between none and very little info about stillbirth, post natal mental health problems, GBS, PROM, placental abruption etc, which have a higher rate of occurrence than SIDS.
I don't know enough about the efficacy of universal screening for steep b, although there do seem to be risk factors which should trigger investigation/testing.
I paid to be tested privately with both my living children, and had antibiotics during labour wirh my ds which turned out to ve unnecessary as he was born in his water sac.
More research and cross nation comparisons of practice and rates needed, I think, as well as close attention to what is known about current risk factors.