The man featured was a "senior engineer" for BA at LGW. I don't see why there is an issue as to which trade he was...remember who got caught with a boroscope in a ladies toilet and his trade!
The CH4 program was interesting but must of been humiliating for his family. I have worked with him on several occaisions and always found him to be a very intelligent, helpful and friendly person.
It's sad to think that someone can be pushed that far for whatever reasons.
I hope he gets a chance to redeem himself and rebuild his life when he gets out.