I echo jordanD’s last point entirely. BAA are scoring a PR own goal by keeping the terminal moves under their hats until the very last minute. T4 is meant to be the home for all Skyteam and non aligned airlines. Yet the horrendously cramped T3 still has airlines such as Emirates and PIA using it with no one apparantly able to say when, or even if, they will move to T4. At least moving Air India will reduce the T3 queues, hopefully. if they join Star, they will ultimately move to T1, presumably.