And when I priced the same HKG-LHR-HKG flight exactly a month later (ie 01 Jul - 08 Jul) the fare went to HKG$9000 plus taxes remained exactly the same at $1579), so total of $10,579, which is still cheaper than BA. I would have expected the fare to increase due to the Olympics.
I don't think EK are going to be the only ones who will be reviewing prices and taxes (including fuel surcharges over the European Summer) do you?