bmi Long Haul
You won't get L/H straight away - it's advertised internally normally (when vacancies arise) and I think this is also specified on the website?
Don't think there is a minimum period of time you got to serve on short haul before you can apply.
I personally also think it is frightening how quickly new entrants get promoted to senior crew positions at bmi on S/H at LHR...
As far as I am aware they only night stop AMS and BFS now on S/H, and that coupled with the four sector days I know the crew do (friends work for them) would be a concern to me. Sorry to sound negative.
I can catagorically say the crew there are amazing and the best in the business - pity bmi do not recognise that very often (same with many airlines I suppose) as far as I understand crew morale is not very high at present.