Originally Posted by
deepbluesky
Update: made it safe and sound with no problems at all. ... The trick is to arrange an "airport entry permit" -- in advance -- instead of a visa. This then allows you to get a visa on arrival, regardless of nationality, and with only a short wait when you get there. ... Anyway, it took a while to make it happen, but I'm glad it worked out. If anyone has any questions, I'm happy to help if I can.
Based on your experience, how smoothly do you think that it would go to start an xONEx from KRT without actually entering the country, -- just arriving and leaving, say, from and to LHR? Can you use an "airport entry permit" to get there, but then just not go through immigration?