I’ve been following this as I had my sole foreign passport retained as a support doc for my infant’s first passport and it was really stressful. We missed our first holiday as coupled with the initial delay to get his passport there was then delay in returning documents meaning it was actually the delay in return of support docs that caused our cancelled plans.
Son’s passport was finally received 5 May and supporting docs are (allegedly) being delivered tomorrow by Royal Mail so about double the 10 days they should be returned in. I paid for secure delivery.
I chased online, by phone (painful and lots of dropped calls when passed to the so-called progress team) and put in requests via the complaints tool the latest was last night.
Unlike previous posters we did today get an email from Royal Mail which says our supporting docs will be delivered tomorrow. Fingers crossed.