Noticed that no-one has replied to carlrsymington's post yet, is it so far-fetched that it isn't worthy of a response?!
Anyway, I'll have a bash:-
10-15 years BA will only operate from LCY to several business destinations
Really? So they'll drop
all their routes from LGW, LHR and other airports?
EZY & RYR will dominate LTN, LGW & STD(?).
Maybe not too far off the mark for LTN & STN (unless there is a new airport called "sexually transmitted disease" - sorry, I'll get my coat). Not sure if they would "dominate" LGW?
I have a suspicion EasyJet will launch a long haul operation from LHR and several european hubs (AMS \ FRA \ MAD) and will decimate BA (cost base being their biggest problem)
I have a suspicion that it is highly unlikely, EZY don't seem to have expressed any interest in either long haul or LHR. If you think EZY will "decimate" BA through their new long haul operation at LHR, that seems to imply that BA will continue at LHR, which you said earlier wouldn't happen?!
How would EZY's long haul at AMS / FRA / MAD etc. fare against KLM, AF, LH etc?
Ryanair running a zero frills long haul from Stansted and several other european 2nd level airports.
As Ryanair have mentioned this previously, it may happen. I'm not sure how popular "zero frills long haul" would be with passengers (assuming flights would be 7 hours plus - eg. transatlantic?).