Quote Originally Posted by Terpe View Post
No Trefor. She was travelling on a Philippines passport.
Apparently she was still waiting for her British Passport at that time.
Just prior to travelling she had become a naturalised British Citizen and she said that the UKBA (or other authority) had immediately shared that information to Philippine Embassy and that immediately following that the Philippine Embassy had somehow revoked/cancelled her Philippine passport without her knowledge leading to the Saudi immigration refusing entry as her passport was invalid.

The objective of the many questions was to establish the root cause as it seemed unlikely that such information would be shared and shared so quickly.

Many folks have become naturalised British Citizens but continued to travel on their Philippine passports without any issue.
The key factor being, is there a sharing of information about becoming a British Citizen from UK authorities to other foreign Embassies/authorities. Or is it incumbent solely on the individual to declare such changes as otherwise it remains unknown.

It appears from the practical experience of many that there is no automatic secret sharing of such information.
But according to Mystica there is indeed a sharing of such information as it subsequently happened in her experience as outlined here in this thread.
and more importantly she was able to leave the UK on this cancelled passport