My opinion is that it's the impact of Covid, both direct and indirect.
MBRRACE should break down the data so we can see what specifically BAME women are dying of. My professional knowledge tells me that it's multifaceted and the answer isn't simple.
There is a higher prevalence of pre existing health conditions in women from BAME communities like hypertension, diabetes, obesity and cardiovascular disease. It's easy to dismiss this but obesity aside, these are conditions that can be really difficult to manage during pregnancy and birth and massively increase the risks to mum and babe.
Research tells us that Black and Asian women aren't listened to my professionals and sometimes their worries are dismissed. There are systematic inequalities and racism at play here.
Also language barriers, finding an interpreter is a bloody nightmare, there aren't enough of them and sometimes there aren't any available. Try doing a thorough assessment when you don't speak the same language. How can the woman give informed consent?
Other things to consider:
Socio-economic factors
Lack of understanding of how NHS services work... for example BAME women in a specific area of London were found to be more likely to book their pregnancies much later which can worsen outcomes.
Anecdotally the area I work is an area where lots of refugees are living at the moment, they aren't from here, they don't understand how services work, how to access care, what they need to do, who they go to, or how services work together.