Errr... let's go a couple of years back.
How do you think Easy got so big, so quickly at LGW??
Nothing to do with BA chucking in a load of slots back into the pot when most of the longhaul disappeared?? Not passing them to GB for example to help protect LHR and LGW from Easy.
From what I am hearing... longhaul and domestic LGW will remain. Both crewed from elsewhere. Alot of the remaining routes will be completely dumped, and a select few will be taken over by GB. Probably why they have just recruited 40+ new F/O's.
Don't be nieve and think just because you are 'mainline' (after all the years of LHR completely disowning you) that you will have any protection. That would be incredibly short sighted. Things are changing - even at mainline!