Realistically though, how much does it cost?
Day 1; A days wage for someone to administer, then mark the written tests. A proportion of the purchase cost of said test (which given that they will be used across the BA organisation, for engineers, clerical etc etc, means that proportion is less), the purchase cost of the computer exams.
Day 2; a days wage for 6 or so pilots, plus 6 or so HR bods. Some money for a round of Tesco sandwiches.
So for the first 2 screening days, the main cost is wages, I'd say. And given that these people are already employed full time, they'd be paying that wage anyway.
Mentally I'm resigned to having to go through the whole rigmarole again.