The final episode of The Long Way Home is now streaming on Apple TV+. Ewan McGregor and Charley Boorman spent the entire summer traveling across Europe on their bikes and they visited about 17 countries, from Scotland to Sweden, Austria, Finland and France. We often say that going on a trip with a friend can become a great friendship -and personality- test, especially when the trip in question might include perilous situations and weather hazards. McGregor and Boorman have been best friends since the 1990s, so I asked them if they had learned something new about each other and about themselves during this fourth trip together.

As the star teams up with director Michael Grandage for his first West End part in 17 years, the pair discuss the thrill of putting on a new play, how it updates Ibsen for our times – and a Trainspotting-esque toilet encounter in Russia