A 96-year-old WW2 veteran has recalled his experience of being forced to walk more than 1,000 miles (1,600km) across Eastern Europe, by German captors.

Robbie Clark was one of 80,000 prisoners of war made to walk the "Long March to Freedom", seventy years ago, in bitter winter conditions.

Up to three-quarters of them died but Mr Clark survived, through "willpower and determination".

BBC London reporter Emilia Papadopoulos spoke to Robbie Clark and his son Mike Clark.

Footage from The Long March to Freedom courtesy of ASA Productions.