Pregnancy and redundancy

Samantha
Hi all, 
I'm currently 30'weeks pregnant and I am about to be put at risk of redundnecy. 
The company isn't closing they are just closing my department. I have read that because they have my mat1b already in and recorded and I'm past the 15th week before my due date I am still entitled to my maternity pay and benefits etc. 
Has anyone been in this situation that could share their experience hint and tips of what I should be asking at the meetings and so on? 
Thanks xxx