World War Two: The brothers who fled Nazi occupation by kayak

Whenever Niels Peteri visits a beach, he thinks of his father, Henri. He was one of the "Engelandvaarders" who, on 21 September 1941, stepped back upon land having paddled across the North Sea from the Nazi-occupied Netherlands to join the UK's war effort.

Niels Peteri was a teenager when he first learned of his father's dangerous 56-hour voyage across the North Sea.

Like most of his generation, Henri Peteri spoke little about World War Two or his role in it.

Eighty years on from the crossing, Niels remembers how he was told the whole story in one go. It was, he says, a story of inauspicious beginnings, brotherhood and incredible bravery.