It is however a fact of life that every London underground and bus passenger is being filmed. Coach drivers in the UK are also filmed - there was even a case recently when one lost his job as he was caught out eating on the job. (I am not saying that is necessarily a good thing but it is a fact of life).
One advantage of cameras in the cockpit is that junior crew members will find it easier to raise concerns about behaviours of more senior colleagues if they have evidence to back their claims. This may not seem so important in the UK, but in countries where the culture often places rank and hierarchy over safety this could make a big difference.
Golf-Sierra