UK airport security does very little to ensure our safety. They merely make our lives more difficult and heighten the barriers those intend to do us harm have to overcome. But they do NOT guarantee any level of security. Just and increased level of something. And an expensive one at that. Our next attack will come from yet another thing we did not think of before the event, as will the one after that. My money is still on the terrorists. Unlike us, they don't have to follow the rules and have the luxury of trying to outwit people with below average intelligence and very low levels of aspiration.
We are doomed!