JN
I also watched your TV program right after the classic movie. I thought it was very good. However, please note I only say 'very good' and not excellent.
Am I being harsh? I don't think so. The back-to-front registration on the black and white photos, the use of the B Mk II and the reference to the mid upper were all spoilers. If you have a chance to give feedback to the producer please tell him/her that it is the final detail that makes all the difference - this exact attention to detail was the difference between a good bomber crew and an exceptional one (like those on 617 in WWII).
By the way, there are 2 airworthy Merlin engined Lancs with ample footage of take offs instead of a Bristol Hercules engined one (I know you know this - but it did detract). Furthermore, there is very good period colour footage for Merlin engined ones in 'Night Bombers':
Anyway, as I said, I would give it 'high to above average' in your TV program logbook.
LJ