She has been with the paper since 1985, cutting her teeth as a crime reporter. She then spent eight years on the paper's Political Desk and was later Life! editor, helping to launch the Life! Theatre Awards. She was also Sunday Times Editor, ST News Editor, ST Managing Editor and ST Deputy Editor before becoming Executive Editor in 2016. She wrote a fortnightly personal column in The Sunday Times from July 1994 to October 2016. It is the longest-running column in the paper. She started a Lunch With Sumiko interview series in January 2017.