British passport process

[SKJMR]

Hi, i attended my ceremony today (01/06/2016) and got my naturalization certificate and i already applied for my first adult British passport today (01/06/2016) via check and send service(post office), now my question is
1. she did not give any tracking number ( ex royal mail special delivery), how will i know it reached safely
2. do i have to wait for a letter to come through by post, to book an interview appointment or can i book myself by ringing them
3. if i do not get any acknowledgement letter, how may days do i need to wait before i ring them to book an appointment?
could you also provide me any specific telephone number to ring for booking appointment please
Many Thanks

Sandeep

[CR001]

Perhaps just slow down slightly. You can't book an interview yet. You will have to wait at least 3 weeks before phoning them to check.

The reference for your application is the barcode on the form. If you did not write this down, then you won't have a reference number.

https://www.gov.uk/passport-advice-line

[noajthan]

Pro tip: Always keep scans and copies of documents and form submitted for any application to HO (UKVI/HMPO).