Originally Posted by
slim_slag
You can 'arrive' at an airport from two directions
Could have been put better, but makes sense if you assume they are talking about people 'arriving' from a taxi.
Agreed. It seems to mean "passengers presenting themselves for travel from a UK airport." And yes, it's very badly worded, but that's not new from these folks. The Ryanair online check-in security questions, for example, are, as I recall, along the lines of:
I packed my bag myself
I have no sharp items
You are not carrying anything for anyone else
Still, suppose it's better than a 50p-per-ticket "proofreading surcharge"