Great videos, thanks for sharing.
One very odd thing about it though, they started the #4 engine first. Certainly during wartime and the other Lancasters with running engines start #3 first (it powers a generator, pneumatics and the main services hydraulics on all marks). Did they say anything about that? Not noticed it before. All #4 powers is an alternator if 'Special Duties' radios are fitted and the mid-upper turret hydraulics- I know which I'd rather have running first!