Wish it had been documentary without the drama
I understand this is "docu-drama", but for me the acted parts were very irritating, silly and cheaply done. What's wrong with sticking to the historical material, expert analysis, archive footage, photographs, and interviews with people who actually remember Dunkirk?
I couldn't get past the first 15 minutes of this, purely because of the "drama" sections. The BBC can do so much better, with documentaries like Nazis: A Warning from History, and Road to War.