He previously held a Michelin star as head chef of the restaurant Roussillon in Pimlico, London, until 2010.

He trained under Alain Ducasse at Le Louis XV in Monaco, and has appeared as a judge on two versions of the BBC One television show MasterChef.

[1] During the Bird Flu pandemic in 2005, Gauthier removed chicken, pigeon and foie gras from the menu at Roussillon after he noticed a drop in demand.

[4] Gauthier Soho was set up in the space formerly occupied by the Richard Corrigan restaurant called Lindsay House.

[1] In 2011, whilst dining at the restaurant DuckSoup, Gauthier was seated at a table near to food critics Matthew Norman from The Daily Telegraph and Tracey MacLeod from The Independent.

Gauthier later said that it was "nothing personal", and the critics took it in good spirits with Norman saying, "I am extremely loud in restaurants because I am a little hard of hearing, my wife is thrilled that this has finally been independently confirmed.

[17] He appeared with Gregg Wallace and Michel Roux Jr. as a judge on BBC One's MasterChef: The Professionals in October 2009.