Before Roche became the Le Monde London correspondent, he had had the same role at the French magazine Le Point, since 1985. He also writes for the Belgian Le Soir and the Swiss La Tribune de Genève, and is a regular contributor to several British newspapers, such as The Independent and The Guardian. He is also a regular panelist on BBC News's weekly foreign correspondent discussion programme Dateline London.
He specialises in writing about financial institutions and the British monarchy.
Marc Roche describes himself as a "liberal who doubts, disappointed by capitalism". Through his experience as a financial reporter for Le Monde he views himself as a connoisseur of Wall Street and the City. Since the 2008 financial crisis he has published three critical books on capitalism's downward slides.
- Elizabeth II, la dernière reine (Elizabeth II, The Last Queen, 2007), about Queen Elizabeth II
- Un ménage à trois (2009), about Prince Charles and his two wives, Diana Spencer and Camilla Parker Bowles
- La banque : Comment Goldman Sachs dirige le monde (The Bank: How Goldman Sachs Rules the World, 2010), about Goldman Sachs
- Le capitalisme hors la loi, Albin Michel, 2011
- Les Banksters : voyage chez mes amis capitalistes, Albin Michel, 2014
- Marc Roche biography at Evene. Retrieved 2010-11-13
- Marc Roche biography by BBC Radio 4. Retrieved 2010-11-13
- RTBF. Retrieved 2011-09-15
- Marc Roche commentary in The Independent 1 April 2004. Retrieved 2010-11-13
- Marc Roche article in The Guardian 14 March 2003. Retrieved 2010-11-13