BA, as the biggest international airline, will, if they don´t make mistakes, stay on top. That means they do now and will in future operate the largest widebody fleet outside the US.
Very happy with the 777, I really don´t see them with all A330/A340 replacing the Boeing. But that the small/midsize aircraft-fleet will be all-Airbus (A319/320/321) after 2005 is quite likely. No 737NG-orders, the 757s leaving the fleet rapidly.
Two possible scenarios for the widebody-fleet at the end of this decade:
1. On top 10 A3XXs, then 50% of the current 747-400 fleet slowly declining, some 777-300s and about 60 777-200s. Maybe A330-200s to replace the 767s.
2. About 20 747X Stretch, 10 747X, 50% of the current 747-400-fleet and a lot of 777-200s. A330s replacing 767s.