Cazatou,
I wasn't trying to be flippant with mr Purdey. If it reads as such, then I apologise.
Mr Holbrook gave an estimated speed of 60 to 80 knots. He also made the specific point, "Yes, but again, it would have been useful at the time to have had an opportunity to observe an aircraft of that type travelling at that speed".
I agree - an opporunity missed by the BoI. It doesn't lessen the validity of Mr Holbrook's evidence though.
My best, as always.
Brian
"Justice has no expiry date" - John Cook