Thanks for the quick reply.
So my BRP will be valid until ceremony and I can use it to enter UK.

Hi All, I applied for JCAP/NDRS couple of months ago and today I received a ceremony invitation letter from the council. Ceremony date is 19th September. I have couple of questions; 1) I know that I have to return BRP within 5 days of either - going to your citizenship ceremony, - getting your certi...