Oh yay! Somebody else who's heard of the film! I'm gutted that I can't get it on DVD. I also have a VHS version, mine is off the telly, but it's old and poor quality.
I always wanted to go to Samson. It's uninhabited in the book too I think.
I'm Cornish though, so it's easier for me than for most. Are you familiar with Michael Morpurgo? He wrote a children's book set there ('Why the Whales Came') that I just adored.