Originally Posted by
Skylion
Well, it's true. Some give less than 100% confidence and at a hub like LHR it's almost impossible to sort who in the security queue has come in from where.
With respect I disagree. Aircraft lands from country with less that 100% confidence passengers progress through security, as transfer passengers do today. Aircraft lands from country will 100% confidence (like Canada/US/EU/CH/NO/and a lot of others) transit passenger disembark directly into the boarding area, O&D passengers follow todays path to immigration and customs.