I received invitation on Friday 18th and when council lady called me she said there is cancellation probably that's why I got it? its 250 pound . did you book your?
one question: after getting Certificate we need to apply online. do we need to send paperwork through post as well? as I have seen in timeline people are saying document delivered and received...
That is great. You have been lucky. Yes the same lady called me around 345pm yesterday but offered me mid January private for £250 and I accepted it

But its okay. Maybe I will check with them on Monday for any cancellations.
You mean applying British Passport?
Yes you will need to post originals to HMPO after applying online. Original naturalisation certificate and overseas passport.
PS: We have identical timelines and the same council too lol.