Mark Thatcher is to the leave House of Lords in October after 28 years as executive chef.
He confirmed to The Caterer that he will be stepping down from the role "by mutual agreement" on 3 October, although his final day will be on 29 August as he has five weeks of annual leave to take.
Thatcher described his time at the House of Lords as "interesting and challenging", with the highlight being involved in the Queen's 50th wedding anniversary dinner hosted, by the Privy Council in the Royal Gallery in November 1997.
From 2004 to 2006, he was involved in the £15m refurbishment of House of Lords' catering facilities.
Thatcher, who is a founder member and vice-president of The League of Club Chefs, said that he is yet to decide that he would like to do in the future.
"I will be taking a couple of months break before coming to any decisions," he added.