Having graduated from West Kent College in 1991,[2] Sargeant landed his first professional job at Boodle's Gentleman's Club[3] in St James, London working with Keith Podmore in 1991.

He then opened the highly acclaimed Gordon Ramsay at Claridge's where he was chef de cuisine from 2001 to 2008, which earned a Michelin star in 2002.

[14] June 2011 Mark Sargeant opened his first two solo projects in the coastal town of Folkestone in Kent, Rocksalt Restaurant and The Smokehouse Fish and Chips,[15] where he first became a restaurateur.

[16] The opening of the two restaurants became part of the Regeneration Plan[17][18] for Folkestone, and quickly became the hot spot destination for tourists and foodies alike.

June 2015 saw Mark open Morden & Lea[26][27][28] his first central London restaurant in Soho, serving a variety of modern and contemporary British dishes.

[29] In 2021 Mark decided to leave the Rocksalt Group and sold his minor stake (Rocksalt Restaurant and bar, The Smokehouse, The Wife of Bath, The Duke William Pub) In August 2022, Mark opened his first solo restaurant as Chef Patron at the self-named Brasserie MS in Clifton Gardens, Folkestone.