There are people who travel because they want to push themselves to physical limits, people who walk across deserts or cycle across the Antarctic - like Ranulph Fiennes, who just does it because it's there. And then there are people like me, who are just genuinely curious about the world.

From my travels around the world I have seen how much damage and pollution is done by the careless disposal of waste. It is also evident that we in the West produce far more and throw away far more than the developing world, almost without thinking

There is nothing better than playing a scene with John Cleese or Maggie Smith. It's electric. But I don't think I'm the sort of person who needs to have an outer ego in order to produce something. I realised that through the travel programmes.

I always wanted to be an explorer, but - it seemed I was doomed to be nothing more than a very silly person.

There is barely a country in the world where you will be completely safe.

People look for patterns in everything. It's what keeps us sane, I suppose. I struggle to see any patterns in my life. I think I can understand depression a bit because of my sister. My own feelings of ... I'm aware that, if you feel down, it can be strangely unrelated to circumstances around you. That's just the way life is.

Armageddon is not around the corner. This is only what the people of violence want us to believe. The complexity and diversity of the world is the hope for the future.