Marcus Wareing and David Everitt-Matthias were the most high-profile chefs to lose stars in the 2019 Michelin guide.
Wareing tweeted: "Surprising news after one of our best years ever. I'm as proud of my team today as I was yesterday. It's business as usual - it's about good food & fantastic hospitality at the end of the day. Congratulations to all the new winners today."
Le Champignon Sauvage had held two stars since 2000. Owners David and Helen Everitt-Matthias posted on Instagram: "Our lives have revolved around Le Champignon Sauvage since we opened over 31 years ago, and whilst we are hugely disappointed that we have lost a Michelin star, ultimately we cook for ourselves and our guests."
Gidleigh Park in Chagford, Devon, was the third business to drop from two to one star, following the departure of executive chef Michael Wignall last year. Wignall was replaced by Chris Simpson in January this year and Gidleigh Park was awarded one star in the new guide.
A total of 15 restaurants lost their single stars, some of which had the accolade deleted as the result of a change of chef or closure.
Tamarind in London's Mayfair, the first Indian restaurant in London to win a Michelin star in 2001, lost its star as the restaurant has been closed since April for refurbishment and is due to relaunch next month with a new menu under the direction of new chefs Karunesh Khanna and Manav Tuli. Head chef Peter Joseph left earlier this year and has since opened his own restaurant, Kahani.
Jamavar, also in Mayfair, lost its star after executive head chef Rohit Ghai left the restaurant earlier this year to open his own restaurant Kutir, due to open later in 2018; the restaurant group's culinary director Surender Mohan stepped in to support the business.
Nathan Outlaw's London outpost at the Capital hotel in Knightsbridge, Outlaw's at the Capital, lost its star following the departure of head chef Tom Brown last year. Brown left to open Cornerstone and was replaced by sous chef Andrew Sawyer.
Lima London in London's Fitzrovia lost its star after dropping its Á la carte offering in April, replacing it with a more affordable sharing plates menu. At the time, co-founder Gabriel Gonzalez said: "The quality of food and level of cooking remains at the same level. I think that the Michelin guide is warming up to more casual concepts like ours."
Boath House in Nairn handed its star back in September last year but the deletion did not formally occur until the 2019 guide. Other deletions due to closure included Ellory and HKK in London's Hackney and Albannach in Lochinver, as well as Martin Wishart at Loch Lomond's Cameron House hotel, which was devastated by a fire that killed two people last year and is not expected to reopen until next year.
The full list of deleted Michelin stars are as follows:
Deleted two stars
Marcus, Berkeley hotel, London (down to one star)
Gidleigh Park, Chagford, Devon (down to one star, change of chef)
Le Champignon Sauvage, Cheltenham (down to one star)
Deleted one star
Ellory, London (closed)
HKK, London (closed)
Ametsa with Arzak Instruction, Como the Halkin hotel, London
Jamavar, London (change of chef)
Outlaw's at the Capital, London
Tamarind, London (closed)
Lima Fitzrovia, London
Royal Oak, Paley Street, Berkshire
Harrow at Little Bedwyn, Wiltshire
JSW, Petersfield, Hampshire
Box Tree, Ilkley, West Yorkshire
Albannach, Lochinver (closed)
Boath House, Nairn
Martin Wishart at Loch Lomond, Cameron House, Balloch (closed)