Presumably an exception has been made in this case.
You normally find the UK is the exception. I think we waste more time and money on this matter than anyone else. And whatever ludicrous security check you can think of, the UK will implement it first. Then, the local Stasi will make the check even more onerous and then have the cheek to tell you that the check is required because of European legislation.
An example: In Italy, they really don't care what a crew carries because they'll have their hands on a superb weapon in a few minutes. So they spend a reasonable amount of time verifying who you are, using crew lists provided behind the scenes, to make sure you are meant to be where you are. This means it's difficult for the wrong guys to get airside. But in the UK, if you show any old badge (inc. a foreign buss or carpark pass) you'll be granted airside access, just so long as you don't have a prohibited yoghurt or pointy stick.
Police officers, wherever they are, set off the metal detectors. Could it be the guns and handcuffs they are carrying? But in Europe, police officers only have to flash their airport ID's and pass airside. Yet in the UK they do the same, but also get patted down (through their stab vests) - to make sure they are not carrying prohibited liquids like yoghurt or honey. Apparently CS gas not in a plastic bag is OK.
And then we have airside catering and outlet supplies...
So I wouldn't worry about things like security. It is so badly designed and broken that anything can be moved anywhere by anyone, if a little effort is put into the process.
PM
PS. What we need is profiling.