Contrary to what the politicians and religious leaders would like us to believe, the world won't be made safer by creating barriers between people.

It's not an easy option. The essence of travel is letting go of habit and prejudice and relishing the unfamiliar. Food you've never eaten before, a language you've never spoken before, religion that mystifies, customs that confuse, politics that perplex, all question everyday assumptions about how you live your life.

You don't ask people about the immigration policies of the U.K. or their country's agricultural policy. Instead, you talk to them about the meal they're eating or their family, and from that you get the sense of another human being, someone we can all relate to.

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.

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.

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

Now, what sort of person would write a scene where a young man stumbles upon a castle full only of beautiful young women? Answer: ME!