The late Duke of Edinburgh dedicated his life to public duty, but he was a pioneer too,

and nowhere is that clearer than in his international charity work.

I'm Kate Humble, a documentary broadcaster, and in this program I'll be looking back at the impact

Prince Philip made on the world through the Duke of Edinburgh's Award, celebrating youth achievement,

and his work with the Worldwide Fund for Nature

championing conservation of the environment.

On an island called Tanna, part of the remote Pacific archipelago that is Vanuatu,

is an isolated village at the end of a long muddy track.

It's a village that's held on to its customs and traditions despite pressure from the outside world to change.

And the religion of the people here is unique.

The deity they worship is the Duke of Edinburgh.

In 2015 I went to Tana to meet the chief of the Jananun tribe.

Why do you think the Queen wanted to be married to Prince Philip?

When not, I'm not sure, we're not in a million in the middle. The Queen is the head in the West. The Prince would be the head here.

Yeah, in Canada.

Yeah.

The one is not only one of the other people

that can't talk about.

Prince of my heart.

Prince of his heart.

Prince of his heart.

I love him more than anyone else.

...