This is one of those low-budget Second World War films, this one of several British ones. They are low-budget BUT way better than the US equivalent. I seem to remember watching a US movie with the same plot - based on the true story of rescuing a scientist. Cannot recall the name.
Anyway, it is decent enough and I enjoyed it. The Nazis are suitably pantomime villain and atrocious; the ragtag band of allies believable enough, incl the excellent Sam Gittins as an Irishman.
But it's no use, I cannot help it - even now Rupert Graves (born 1963) has gone grey, and is old and haggard (he's age 57/8 here), when I see him I always think of those lush 1980s Merchant Ivory films like ROOM WITH A VIEW when he was age 23 playing 18.
Now he plays older than he is and is an old dumpy white-haired man. But hey, that is what having 5 kids does to you, Rupes! Time is a cruel master indeed...
3 stars