A short 12 minute video of eleven Worcestershire veterans from WW2. http://www.worcestershirevoices.org.uk/news/we-did-our-bit
I have the DVD, will play tonight if I get a chance and report back. I think it is free anyhow? DVD has 12 minute of vets (same as web content) and then "48 minute background film that explains more about each of the veteran's experiences" Possibly it is stuff already known or aired before.
The only Dunkirk bit is about 1 minute, which is on the one-line video. A chap from 67th Artillery Regiment, rescued from North Mole by HMS Worcester.