Since retiring from competitive track, Johnson currently works as a television commentator, often for the BBC in the United Kingdom, where he has also written columns for the "Daily Telegraph" and "The Times" newspapers. Johnson first appeared for the BBC in 2001 at the World Championships and at the 2002 Commonwealth Games in Manchester. He subsequently was part of the BBC's presenting team at the 2008 Olympic Games in Beijing, 2012 Olympic Games in London, 2016 Olympics in Rio de Janeiro and 2020 Olympics in Tokyo. He was in the BBC commentary booth for the men's 400 metres final in Rio de Janeiro to see his world record broken by Wayde van Niekerk, saying about van Niekerk's performance, "Oh my God! From lane eight, a world record. He took it out so quick. I have never seen anything from 200 to 400 like that. That was a massacre from Wayde van Niekerk. He just put those guys away."