Originally Posted by
tigertanaka
Apart from balancing issues (rare), equipment changes (fairly common), damaged seats (happens) or the urgent need to sit children with a parent (but not in row 1), I can't see why BA (or any airline) should ever allow their staff to move from pre-booked seats without explanation. Even if you are a Premier, a member of the Royal Family or the Chairman of IAG you should have to take what is left from the seat inventory at the time.
The only time it has happened to me was when I was in 1A and the placed an unaccompanied girl in that row. It was explained to me that I had to be moved into another row as they could not place her next to a strange male passenger. I was a little miffed but got over it in about 2 mins.