Originally Posted by
stoneman
I booked flights last month and it wasn't there then for me. Maybe it's a browser thing, I use IE.
Originally Posted by
BAGoldBoy
I use IE and it's ben available for some time - nothing like being consistent

It could be A/B testing where BA give different experiences to different users and then measure which one results in more seat sales - those offered at point of sale or those offered afterwards.
Although, months of A/B testing would be a long time, so perhaps it is a phased rollout.