Originally Posted by
GrayAnderson
I have seriously not understood why either of the EU or UK force a re-clear of security. The US sort-of vaguely makes sense because of having to reclaim baggage, but if checked bags are going through and everyone has essentially the same standards (and there aren't rampant compliance issues - I could see some airports with known corruption issues getting singled out), the whole thing comes off as a bit of a make-work programme to the benefit of nobody.
Most EU airports let you transfer without re-clearing security if you're arriving from a destination deemed to have "the same standards". Their definition of this may vary from yours. The UK is the outlier in requiring security from all transfer passengers apart from CTA arrivals.
This won't be easy to change as UK airports aren't really designed to let people out of the plane into a departure hall, because if you do that, there's no public path for terminating passengers to exit.