Hi Livenav (and the rest the reply'ies!!)
Not sure if You know of a book that Hugh Merewether wrote in 1999 called :
"Prelude to the Harrier, P1127 prototype flight testing and Kestrel evaluation"
Published by HPM Publications (sadly no ISBN) X-planes book 3
Duncan Simpson helped write it.
Lots of info in there, names like messers Henderson, Reeder, Barwell, Topp, Cannon, Woodcock.
Hope that helps a bit..
Cheers,
Nik