Thanks all!
Black, these Sea Buckthorn were found in a sand dune area that makes up part of our National Park on the North Sea coast, so you are quite right when you mention coastlines.
I can't believe that people aren't out there collecting them to eat if they are free and edible! I don't know if I would be brave enough to test any jelly or chewy sticks on my family - willing guinea pigs can pm me
