with Sue Cook and Alan Titchmarsh

In a special edition of the programme, reporter Marian Foster reaches journey's end with the Rainbow Rovers - the unique convoy that included landrovers, a London taxi and Bob Hoskins, who travelled 2,000 miles from the Houses of Parliament to the heart of the Sahara desert.

The purpose of the journey was to draw attention to the plight of the Saharawan people, who were forced to flee their homeland of the Western Sahara over 14 years ago. Marian looks at the achievements of the 200,000 people who have started a new life in the desert - 700 miles from home.