While at culinary college, becoming the first female chef in the United Kingdom to run a restaurant with three
Michelin stars. Of the 121 British Michelin-starred restaurants at the time of her appointment, only seven had female head chefs. She had left Ramsay's restaurant to work for a year and a half in
Alain Ducasse's
Le Louis XV restaurant in Monaco, before returning once more to the UK to run the Chelsea-based restaurant. Smyth was awarded a perfect ten score by the Good Food Guide of the UK's 2015. previously won by her mentor
Gordon Ramsay in 2000.
2016–2021: Core and Oncore Smyth left Restaurant Gordon Ramsay in 2016 to open her first solo restaurant, Core. Core opened in London's
Notting Hill neighbourhood in July 2017. In April 2018, Core was named Best Restaurant at the GQ Food and Drink Awards. Smyth was named the World's Best Female Chef 2018 by the World's 50 Best Restaurants. Core was awarded three Michelin stars in the 2021 Michelin Guide, Oncore, on the 26th floor of the
Crown Sydney in
Barangaroo opened in November 2021 with head chef Alan Stuart. A review in
Bloomberg described Oncore as "Sydney's best restaurant". Due to ongoing border restrictions to prevent the transmission of
COVID-19, Smyth was not able to be at the opening.
2022–present In May 2025, she collaborated with the champagne brand
Dom Pérignon for a campaign named "Creation is an Eternal Journey". In September 2025, Smyth opened her luxury bistro, Corenucopia, in Chelsea, offering her interpretation on British cuisine. In 2026, the same restaurant was awarded its first Michelin Star after being open only for two months. == Personal life ==