I dont know if BAC actually have the present contracts to justify the posts advertised, but they almost certainly will in the near future.
I am not qualified to comment on the ethics of individual companies training and recruitment processes, but I do know that the recent Royal Mail decision to cease using trains to transport the post will result in a significant increase in the amount of mail carried by air.
Magoo says that they will be using palletised operations (on bigger aircraft), and this is the case for some of the mail, but what he/she forgets is that the mail which previously went by train and is not cost effective (or will not meet RMs obligation to deliver on time) to take by road or by palletised service will have to go by the smaller carriers from the regional airports as it does now - this where BAC and their competitors come in.