Originally Posted by
mmxbreaks
The biggest reason to put eight rather than 14 seats up front, really, is to cram more CW seats into the aircraft body (plus that smaller F layout will quickly jump from A-fare availability to F-fare with a huge price). Although WT+ is probably a more lucrative area to increase capacity - as I've seen a lot of large companies drop business travel policy to premium in the last few years and those cabins are often rammed on many routes.
In my experience BA often has all but one F seat available for A class purchase, so you'll see F5 A4, or F2 A1 quite commonly.