TTN #12
IIRC the Victor K1/1A used "Go Speed" and "Stop Speed", usually in the correct order or simultaneous at Marham. On Trails, in places like Masirah, it was not unusual to have to accept a 10 knot gap between "Stop Speed" and "Go Speed" to lift the required fuel load. Not Perf A !!
A couple of thoughts( not knowledge ) about lifting the nosewheel early. Was this a technique required by the early tricycle undercarrige on such as the Airacobra, and taught to us by the Americans? This was then carried over to the early jets as "that was the way to do it" with tricycle undercarriage.
Nosewheel tyre speed limits could also have been a problem. Certainly with the Canberra, but could also be limiting with the VC10 at high elevation places like Nairobi. IIRC the limit was 200 MPH!