Bill Browder describes himself as Vladimir Putin’s number one enemy. When Putin came to power, Browder was the most successful international businessman in Moscow, seizing the opportunities offered by the collapse of communism to build up a multi-billion-pound investment fund. But then he uncovered what he calls serious corruption at various state-backed companies. In 2005, he was detained by the authorities and was kicked out of Russia. His tax adviser Sergei Magnitsky was arrested, and died in prison in Moscow in 2009.

In his memory, Browder has spent the past decade leading a global campaign against Russian corruption – Magnitsky Acts have now been passed in America, Britain and Europe – legislation freezing the assets, and banning travel, of officials guilty of human rights violations. Browder’s exciting account of his time in Russia, Red Notice, has become a best-seller on both sides of the Atlantic.

In conversation with Michael Berkeley, Browder tells his extraordinary and compelling personal story. He now lives in a secret location somewhere in London and lives in fear of his life. He talks about the guilt he felt when Magnitsky died, and how he found a new meaning in life afterwards, by campaigning for the laws which bear Magnitsky’s name.

Browder’s music choices reflect the high drama of his life, with excerpts from operas by Verdi and by Puccini which he discovered when he went to the Bolshoi in Moscow. He includes too music by the Russian composer Sviridov, a setting of a Pushkin short story. And he ends with Jessye Norman singing “Amazing Grace” – a hymn which reflects his belief that he has been helped, and sustained, by powerful forces outside his control.

A Loftus Media production for BBC Radio 3Produced by Elizabeth Burke