Apologies, and I'm sorry to have to tell you that it is highly unlikely that bmi will recruit in Scotland for the foreseeable future. Unless a lot of crew leave, which is unlikely and expansion is not planned, more probably contraction or worse, then I don't think you should look to bmi for a flying job.
I'm not sure what bmi regional are planning and whether they may expand and recruit in the near future. It may be worth contacting them in Aberdeen. Or someone from regional may be lurking here and enlighten you more.