BB, thanks for the reminder, I had forgotten the Air Plans role. I also remember how Eng Plans worked. We had a sqn ldr and a WO on the desk. We used to get the most pessimistic assessments of ready times from the sqn ldr (not a Vulcan man) that the WO would support 100%.
We soon learnt not to ask the WO for the estimate but wait until the sqn ldr was out of the room and ask the WO what he 'thought'. We would base our generation on his 'thought's not on the official times.
I can't remember any Eng Plans names but Air Plans in late 60s was Ivor Gallway ex-35 I think. Need to check my log book, but that is another story.
For Langley Bastion we used the same technique with the Met Man. He would brief the Command Met O's consensus, then we would ask what he actually thought
