BA club class seats are very slightly reclined when in landing configuration
Dave, do you mean that these seats are not in as fully upright a configuration as they are capable of, or do you mean that even when in "a fully upright position" there remains a significant degree of recline? Even most "fully upright" economy seatbacks aren't quite vertical.
I've always assumed that the reason for requiring fully upright seating on takeoff and landing is to maximise the space between seat rows in case evacuation is needed. I'm sure someone more knowledgeable than I will correct me if I'm under a misapprehension
