Thank you both! That’s great!
You don’t need one labelled as a birth ball they’re exactly the same as exercise balls. I just got a £5.99 exercise ball from Amazon x
Might be worth a look on FB market place, some people giving them away.
Vinted girl or freecycle pages! I posted on my local baby page and had like 5 people offer me one for free xxx
I just bought the cheapest one on Argos. It was purple. I think the brand was opti. Around £11 i think. Got me through my labour