He moved to France, with his wife, where the couple wrote L'Aveu (The Confession) about his ordeal in the Prague Trials. While the main defendants were senior to London, he gained prominence worldwide by writing the book. The book was made into a film directed by Costa-Gavras, starring Yves Montand and Simone Signoret. His wife, Lise, narrated the documentary A Trial in Prague, dir. Zuzana Justman (2002, 83min).
Artur London died in Paris in 1986, aged 71. His wife, Lise London (née Élizabeth Ricol; born 1916, France – died 31 March 2012), died at age 96.