"The Freedom Line" by Peter Eisner is a gripping account of the activities of the Comet Line - a British-funded, Belgian-run evasion network that was set up in 1941 to repatriate shot down Allied airmen. By the war's end, some 800 airmen had been returned to the UK. Well worth a read.
If anyone wants to know more, then google "CometePaysBasque".
Hello Sidevalve. Could I add that it is now safe to come out of hiding in SW France as the War finished a few years ago.