As Flying Lawyer has said often enough, we need some more facts.
Re:
The Met Police arrested him, not sure why it's airport security getting slagged off here. Shouldn't all you whiners be complaining about the Met Police doing their job?
Could this end up similar to the police investigating election candidates for having sausage rolls or biscuits available to voters as potentially dangerous 'bribes'?
At court, the judge/jury will decide whether the law was broken, and decide on the appropriate punishment - if any.
And if this is proven to be the police vastly over-reacting with no law broken (which could easily be the case if he had bought a set of knives of some sort during his stop-over in London and was simply taking them home in his crew baggage), would there be any apology from the Met to the pilot involved
and for the vast and unnecessary inconvenience to all of those passengers who could not fly that day?
Where I can see airport security being criticised is if it is an innocent case of him simply wanting to take something that he had (legally?) bought in London home with him, why did they not find a common sense way of resolving the situation, such as suggesting that the bag containing the knives needed to be 'checked in'? Sorry, I've just spotted the obvious flaw in that last sentence: use of the words 'common sense'!!