On another issue, can someone please explain just why BA needs all these 'fleets'? I can understand a division between long- and short-haul, but what is the purpose of all the rest? Is it a case of BA management employing the old "divide to rule" principle?
There are not that many fleets left - 2 at LHR and 1 at LGW.
EF and WW at LHR are something that's left from the old days when BA was BEA and BOAC. There was Mid Fleet at LHR for a few years - but it wasn't as efficient they hoped for - probably because BASSA had too much to say about where the crew were going - to protect the best paid destinations to themselves - I don't think the crew on Mid Fleet had the union's support and were "the bad guys".
There were also 2 fleets at LGW until a few years ago - similiar to LHR.