Sorry I thought it was common knowledge (the alleged kidnapping) which allegedly involved a small number of striking cabin crew. There is a police investigation currently underway.
As for employment law being for guidance only my experience is simply that the majority of companies don't have access to the legal advice that BA does so they tend to act first and find out the law later if they fall foul of it. Mostly they don't - as there are no unions to pick up the bits. The point still stands I think - in many companies these people would not just be suspended pending, they'd already have been booted into the long grass.