My marriage has worked because I am not around much.

You can't get a suit of armour and a rubber chicken just like that. You have to plan ahead.

I wanted to be an explorer, but gradually found the world had been explored and that there was nowhere left, really. Once they climbed Everest in 1953, when I was 10 years old, I thought, 'Well, that's pretty much it now.' But the idea of travelling and exploring and adventure was very strong.

One of the most important days of my life was when I learned to ride a bicycle.

John Hall, my geography teacher at school inspired me to a lifelong interest in geography and a curiosity about our world which has stayed with me through my life. Geography is a living, breathing subject, constantly adapting itself to change. It is dynamic and relevant. For me geography is a great adventure with a purpose.

I've never particularly liked travelling with large groups or being told where to go by somebody else. I prefer to find out for myself.

When I'm travelling, I always take my little notebook and scribble things down as I watch them; I'm very much geared to everything that's happening. Whereas, the diary I keep is just about a record of a day I've spent. When I'm filming, I'm looking quite intensely at everything I see and trying to get my own eye on what we're going through.