Just uploading my experience of an adult renewal + title change with the Bootle office.
StatusDate
Passport printed 3:00am on 14 July 2022
Application approved 2:26pm on 13 July 2022
Documents received 5:38pm on 17 June 2022
Application received 2:46pm on 7 June 2022
Application submitted 2:45pm on 7 June 2022
I actually sent the documents by Royal Mail special guaranteed by 1pm on the 14th of June. Expect it to be delivered tomorrow.