OT but it's good BA don't do what Easyjet does at LGW which is to reasonably frequently change the arrival terminal between N&S. Sometimes announcing it about 20 minutes from landing that the flight you're on might be published as arriving into the North but today it is arriving at South (and vice-versa). It' not a problem for me as a frequent flyer - and the South is better anyway as the train station is there but have seen a few folks become seriously worried, particularly if they are being met by a relative or driver etc.
Have had it on 3 of my last 10 flights on U2 now....all in my favour of changing to the South terminal