1 Michelin Star Chefs: Orson Vergnaud, head chef, Pétrus by Gordon Ramsay

The Staff Canteen

Orson Vergnaud is the head chef at Pétrus by Gordon Ramsay

French-born Orson Vergnaud has an impressive CV, having spent 15 years working in many acclaimed fine dining restaurants.


Credit: Gordon Ramsay Restaurants

1 Kinnerton Street, Knightsbridge
London, SW1X 8EA

Opening Times: 

Wednesday - Saturday
Lunch: 12pm - 2:15pm
Dinner: 6pm - 11pm 

Restaurant Reservations: 

0207 592 1609

Group Reservations:

0207 592 1373

Email: [email protected]

Head Sommilier: Daniele Chelo

Twitter: @petrus

Instagram: @petrusbygordonramsay

Facebook: @PetrusKnightsbridge


Orson spent the first five years of his professional life in Paris and in the southern French city of Toulouse before arriving in London in 2012.

He spent the next 10 years working under some of London's best chefs, including Daniel McGarey at Canary Wharf’s Plateau Restaurant and Paul Walsh at Jason Atherton's one Michelin-starred City Social.

Credit: Gordon Ramsay Restaurants

In his first head chef role, Orson spent two years working at the legendary Le Pont de la Tour in Tower Bridge before returning to City Social, this time as the head chef.

Before joining Gordon Ramsay Restaurants, Orson was the head chef at one Michelin-starred Galvin La Chapelle, working for the Galvin brothers, chefs Jeff and Chris.

What the guides say...


three stars

AA Restaurant Guide


In 2022, Orson became head chef at Pétrus, retaining the restaurant's star in the Michelin Guide for Great Britain and Ireland 2022.

Pétrus by Gordon Ramsay

Named after the prestigious Pomerol wine estate in Bordeaux, which produces highly sought-after wine from 100 percent Merlot vines, Pétrus first opened its doors in 1999.

A collaboration between Gordon Ramsay and Chris Hutcheson, with head chef Marcus Wareing at the helm, its original site was on on James Street but it relocated to the Berkeley Hotel in 2003, replacing Pierre Koffmann's La Tante Claire.

The first incarnation was very successful, earning a number of accolades including two Michelin stars. 

However, in 2008, a fallout between Gordon Ramsay and Marcus Wareing led to a legal battle.

Gordon Ramsay gained the rights to the Pétrus name and the site became Marcus Wareing at the Berkeley (Since renamed Marcus).

Pétrus opened at its current location on Kinnerton Street in 2010 under chef Sean Burbidge, who left in 2014, replaced by Larry Jayasekara in 2015, Russell Bateman in 2018 and Ben Waugh in 2020.

Serving a modern fare of French cuisine,  Pétrus was awarded a Michelin star in 2011 and has held onto it ever since, and has since been awarded three AA Rosettes.

Each menu item has the Ramsay hallmarks of modernity and measured unfussy execution, with classical dishes such as grilled native lobster with violina pumpkin, clementine and citrus beurre blanc; hen's egg with artichoke, Iberico ham, hazelnut and vin jaune; and desserts like Yorkshire rhubarb Mille-feuille with earl grey custard and lemon balm. 

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The Staff Canteen

Editor 18th February 2022

1 Michelin Star Chefs: Orson Vergnaud, head chef, Pétrus by Gordon Ramsay