Type: First Adult passport after Naturalisation
Method: Online
Passport Office: Bootle
Application submitted: 13/05/2023
Identity confirmed: 14/05/2023
Application received: 14/05/2023
Documents posted: 15/05/2023
Documents arrived: 17/05/2023
Documents received and status updated at the HMPO website: 17/05/2023
Application approved: 26/05/2023
Passport printed: 27/05/2023 (12:03am)
Passport received: 30/05/2023
Supporting documents received: 07/06/2023
The process from applying to receiving my UK passport was just over two weeks, and then another week to receive my NZ passport and citizenship certificate. Nice and quick! Surprised at how cheap the UK passport feels though.
Thanks to everyone who updated their timeline on this and other threads, it's so helpful. Good luck to everyone who is going through this final step!