I know that similar questions may be asked before, but could you please kindly advise on my situations as it is a bit more complex.
I recently received the approval for British citizenship (naturalisation), and the earliest ceremony I could book is mid April, which means that the earliest time I could submit my British passport application is mid April.
Unfortunately, I have to relocate for work to another country at the end of April. My questions are:
• The country of my current nationality does not allow dual citizenship, which means that in theory my non-British passport should become invalid after the citizenship ceremony? Would there be any issue if I travel with my non-British passport to the country of relocation (which is not the country of my current nationality, btw) in end of April?
• I would then need to return to the UK for the passport interview. Would I be allowed to return to the UK without British passport (but with the naturalisation certificate)? Would Border Agency question that I left the UK without British passport while I was already a British citizen? Would they question that I should no longer use the non-British passport as my country of current nationality does not allow dual citizenship?