Travel after ceremony before applying for UK passport

[obormot]

Dear all:
I just received the approval letter for my citizenship application and I am about to book the citizenship ceremony.
But I will need to travel abroad frequently during coming months.
I an EU citizen.

1. After I get the citizenship certificate, will I be legally allowed to travel out and return to UK on non-UK passport or ID?
Or should I try to postpone the oath ceremony till mid- January?
I am scheduled to travel to Asia and US for job in November-December..

2. If I apply for UK passport, will ot be OK to travel to Europe and back on my EU ID while application is processed?

[Zerubbabel]

Hello

I am an EEA citizen + BC by naturalization and when I travel (multiple times a month) I randomly pick up the first ID/Passport I find. Either EEA passport/id or my British passport. Never had any issue.

Once you sign the British Citizenship Certificate at the ceremony, you are British. But you are not required to apply for a British passport.

The only thing you can't do, is if you have a non-EEA passport and a residence card and use those to travel. But travelling with your EEA passport/id is not an issue.