Charlie Lakin is to leave the Marquis at Alkham in Kent and is being replaced in his role as head chef by Michael Fowler.
Lakin, who is leaving to spend more time with his family, has been head chef at the Marquis at Alkham since 2008. He has won three AA rosettes for the restaurant and was named a rising Michelin star in the first two years of his tenure there.
Fowler, 37, joins the Marquis from Prince's Golf Club and Brasserie on the Bay in Sandwich, where he worked as head chef and gained two AA rosettes. Meanwhile is brother David, 34, has been appointed sous chef. The brothers previously worked together at the Prince's Golf Club, where David spent two years training under Michael.
Charl Oberholster, manager at The Marquis, said: "Michael's appointment demonstrates our continuing commitment to putting exceptional food at the heart of what we offer and we're delighted to welcome him. He shares our passion for food and has the flair, imagination and dedication to build on The Marquis's excellent reputation for fine dining and take it to the next level."
Michael, who lives in Sandwich, took up his new position last week and has already introduced a selection of new bar snacks, available every day from 2 to 6pm, to complement the restaurant's tasting, Á la carte and afternoon tea menus.
He said: "The Marquis really suits my style of modern English cuisine and the way I like to cook, and I'm looking forward to introducing my own take on some very classic dishes.
"I'm also keen to make more of the Marquis's garden, which is a lovely space with wonderful views. I'm creating some sharing dishes that will be perfect for everyone who likes al fresco dining in a beautiful setting, but I'd like to think that all of our menus can be enjoyed in the garden as well as in the restaurant."