The 42-year-old barrister, who until now served as the Attorney General in the Boris Johnson led government, was among the first contenders to throw her hat in the ring to replace Johnson as Tory leader and Prime Minister.
British Prime Minister Rishi Sunak on Thursday came under fresh pressure on the reappointment of Indian-origin Suella Braverman as home secretary after two Conservative MPs questioned his decision, days after she quit over data breaches.
"I have made a mistake; I accept responsibility; I resign," the 42-year-old barrister said.
Suella Braverman, an Indian-origin barrister, was appointed as the UK's new Home Secretary by Prime Minister Liz Truss earlier this week
Rishi Sunak, Sailesh Vara and Suella Fernandes were the three new Indian-origin MPs to be inducted into the Theresa May govt.
Indian-origin Labour Party candidates won more seats than their rival Conservatives.