The post-showing comments have surprised me, so I wind my neck in by 80%.
Being in my 70s and having sucked up/in just about everything published and shown about 617, I sat in the armchair, glass of vino collapso in hand, and was making disgruntled noises at the rate of one a minute, so much so that I got a rollocking from Mrs LB "if its that bad turn it off!"
So it was me, not the programme, after all, and I have become a curmudgeon and a grumpy old sod in addition to all my other virtues.
Did I miss the reference to low-level marking by aircraft other than the rather large and slow Lancaster, which was surely pivotal, and worth the inferred 20% whinge inferred above? And did I miss reference to, shall we say, another distinguished squadron in the Tirpitz coverage?