I am from India not UK.
Without a valid Visa (with stamp or without stamp) one cannot travel from airport to any country unless it falls under on arrival visa category.
I have traveled to other countries on work visa but I never encountered this kind of situation before where i do not carry any document with me.
Hence i am too skeptical about it and the process around it. More than that i am unaware of how it works when it is PR, because for work permit i just need to showcase couple of documents and that's it i am good to go out of airport.
I am not sure how things work when its for PR and also the process might differ based on the home country. Hence I was looking for answers from all who have gone through it.
If its UK, things might be different as it falls under common wealth countries (Austalia, UK, canada etc).
Also lots of emotions are involved too in this as I would have to get it done without informing any one.
@Tickled Pink - Appreciate your patience with my repetitive questions
@others - Thanks for the responses.