Childcare bubble vs support bubble

[HungrySleepyGrumpy]

AIBU? My MIL usually provides informal childcare for me and looks after my daughter on a Friday while I am at work, which I am hugely grateful for.

She is insisting that she continues to see and look after DD during this new lockdown, but she has also formed a support bubble with her mother (who lives on her own). I thought that support bubbles were only allowed to see each other and act as one household, therefore my child can't go there for informal childcare because that would be adding a third household into the mix? My MIL thinks that she can do both the support bubble and informal childcare and is accusing me of trying to keep DD away from her unnecessarily, which I would never do.

Please can I get your thoughts?!

She can do both as long as her mum isn’t there at the same time as your daughter.

I thought you could do both, but the guidance isn't clear. As a comparison, a single parent can still form a support bubble even if their child is moving between mum and dad's house, so that child could be mixing with 3 or 4 households (mum, dad, mum's support bubble, dad's support bubble, assuming mum and dad are both single).

Yes, you can be in both a childcare bubble and a different support bubble, if a single adult household.

Thanks so much everyone! I'm really glad as it will make my life so much easier if I have the childcare, but I didn't want to break any rules

My MIL is doing a support bubble with SIL and a childcare bubble for us. We (me and DP) won’t be seeing MIL either in her house/our house or outside, just our DD. My SIL won’t be at MIL house whilst DD is there.
The guidance isn’t 100% clear but the paragraph mentions the childcare bubble and then the support bubble just below

One is a support bubble, one is a childcare bubble. I'm in a support bubble with my single parent sister, a childcare bubble with a friend. I also care for my DGM so whatever that is.

Yeah thats fine. My mum is my childcare bubble and is my nans support bubble