(Reuters) - Millennium & Copthorne Hotels (M&C)
The company, which operates the Millennium, Grand Millennium, Copthorne and Kingsgate hotels, did not give a reason for her departure, but said it would provide further updates in due course.
Fox joined M&C as CEO in April, having previously served as president of Canada-based Fairmont Hotels & Resorts and European chief operating officer at InterContinental Hotels Group
Her departure comes at a time when M&C has been reviewing its "earnings profile" and developing a strategic plan, as concerns about Brexit have hit demand at its British hotels, especially in London, with rising labour costs adding to the pressure.
In August, the hotel chain reported a 4.3 percent drop in half-year revenues per available room (RevPAR), a key industry measure.
Tan Kian Seng, the company's chief of staff, will serve as interim CEO, it said on Friday.
(Reporting by Shashwat Awasthi in Bengaluru; Editing by Mark Potter)