Speaking of BA LGW here...
We have US Visas so no stamps for the USA.
Other than that we never get our passport stamped unless we ask them to for souvenir purposes etc...
In certain places (ANU/BLQ/FCO) we just walk thru the immigration and they take the fact we are in uniform as gospel - sometimes crossing our names against the gen dec and our ID's.
Other places (BDA) we literally sign ourselves into the country. Nothing is looked at.
Then places like UVF/AMS we have to fill in a landing and deoarture card as per you guys SLF.
When it comes to passports BA pay for the renewal plus any visa renewals
