Same question please but I’d like scientific answer and not assumption if possible. This cannot be found anywhere on line. Everything say wait 10 weeks but when do the 10 weeks start? Think it should be from when documents received at the passport office. They do state that there is a delay between receiving your documents and adding the ‘processing’ bit to the on line tracker. My passport arrived at Liverpoolon 27 April. 10 weeks is 6 July, only days before we fly.