135 aircraft?
57 744s, 45 772s, and 21 767s I think...that gives a current WB fleet of 122 aircraft...
...so BA are looking to replace them all and add a little growth?
I suppose in 15 years time, the last 772s and 744s will be getting near retirement time.
My own guess is that we'll see 748s, 773s and 789/10s in the mix, although I can't help thinking that Airbus will break the bank to get this one...maybe A330s, A350s and a few A380s will be the order of the day. The only problem for Airbus is that they can't offer anything competitive in the 747 sector...the 346 is a dead duck and the 380 too big to replace all the 744s...