Neighbours carrying on a usual

[Bowie2020]

I live in a house converted into flats and one of my neighbours keep having friends and family visiting as normal.
My other half has a health condition that makes him vunerable, so as we share stairs and a hallway with my neigbour I'm worried about the extra risk with more people visiting.
I think a couple of relatives of my neighbour are helping with childcare and I understand that she may need them to come over and help but I've noticed her friends coming over this last week just to hang out as usual.
It seems crazy I'm even worried about this?
Am I overreacting?

No you aren’t overreacting. They are breaking the guidelines. You need to either tell them to stop (if you can continue to co-exist after probably pissing them off) or ring the police non emergency line and report. Don’t worry it’s likely this week our liberties will be further eroded and we will be on a stricter lock down and those visitors will be stopped by the police or army and fined so it should stop soon.

In the meantime, if your partner is in the shielding Group they shouldn’t even be coming into contact with you much, definitely not leaving the flat. So the risk is reduced. Practice good hygiene yourself to minimise it further. Remove your shoes and clothes at the door and wash them, take a shower as soon as you enter the flat and wipe down (with bleach) all your shopping.