At a Leuchars Air Show in the late 70s or early 80s they did a simulated scramble of two Vulcans from an area close to the F4 QRA. They were airborne in a lot less than 5 minutes. IIRC they started all four engines in each aircraft almost simultaneously.
Was this a one-off display at Leuchars or was this routine repeated at other air shows? I attended many air shows at Leuchars over the years but can only remember this display happening once. Very impressive.