FB, because he's The Cheif of Defence, that's how. Who else would the Cheif of the Air Staff submit a PVR to, if it wasn't the Cheif of Defence? Do try to keep up, old chap!
Hmm, I know this'll mark me out as a nosey bugger. But The Cheif's D.O.B. says 27th December 1952. Wikilies has it down as 4th March 1952!
If its the same Sir David Richards that is.
Anyway, all hail to the Cheif!
FB