Originally Posted by Schind

There are more. G-STBL has it fitted (mentioned on Twitter on Feb 25th that it was fitted 'a few weeks ago').
CIVW, CIVY and a couple of the BYG's have had major maintenance recently which you'd assume would include wifi fitting.

The problem is that BA don't announce which planes have it until you're on board so you're relying on tweets, messages on here or hoping someone at BA Enginerring comes along with a list of aircraft that have it.