Originally Posted by
graraps
BA tend to have a big advance purchase requirement for the cheap fares, so you may need to fly somebody else instead (e.g. KL/NW or LH/LX).
I think the OP would have been able to get a CW sale fare for around £1600 or so return if he had purchased it by the end of November (although I can't verify that now). Sadly now too late for that, but worth bearing in mind for the future.