The work rostered to them will be extracted before the BA bidlines are constructed. It will consist of a fair share of trip types, weekends off, etc.
Sorry - won't work as it disadvantages a BA pilot who may want to bid for the trip that is extracted. Why do they get ANY week-ends off? I didn't get a week-end off (other than leave) for a couple of years. Why should the junior BA guys work week-ends when the BMI guys don't?