Again lots of “I have heard” without any factual references to back up the allegation.
Most multinationals would have an internal security division dedicated to ensuring fraud and other activity not compatible with the role is looked into; that is standard operating procedure.
You make an allegation which insinuates that Bill Risbridger is dishonest for “falsifying evidence”, and by extension that suggests BA management systemically uses dishonest practices against its own employees. In fact the allegation you make was never proven, and the judgement which sets that out can be read below:
“there was no possible basis for the contention that [Bill Risbridger] had been dishonest, and a jury would be perverse to draw such an inference”
Thankfully, BA holds all the cards in the remaining rump of this dispute, and the enthusiastic and youthful employees of Mixed Fleet will be part of the solution to returning the airline to structural profitability and delivering top notch customer service, alongside their existing right minded cabin crew colleagues who demonstrate their support of BA by not withdrawing their labour.
Those who believe they will get a better role, salary and pension elsewhere would be well advised to seek out those other roles voluntarily, and those who wish to stay and create dispute and division will simply not remain with the airline. Simples.