Selling North Korea as a tourist destination

North Korea may not be high on the list of destinations that most tourists would like to visit, but a tour operator which organises holidays there says business is booming.

Operating from China, Experience North Korea sells tours of the North Korean mountains and can even offer the chance to run in the Pyongyang Marathon.

And the company has now come to London to try and woo adventurous travellers, as Jeremy Howell reports.