I very much doubt that It is going to be any LH, as LHR need as many LH A/C as they can possibly can get their hands on. Especially now with all the free slots from BMED they need to fill. Remember by slot allocation legislation at LHR, airlines need to use at least 80% of their slots, or they lose them.
Those slots don't come across into BA's hands until late 2008 - 2009 as BA don't have the aircraft to use them so I don't expect that affects the man power planning in the near term.
Hope they make up their minds soon as know a couple of people swimming in the pool.