The chief executive of English National Opera, Cressida Pollock, is to leave her job three years after she was appointed to rescue the company from financial disaster.

Pollock said she was “greatly saddened” to be leaving. Her departure follows rumours of clashes with Daniel Kramer, ENO’s new artistic director.

The former McKinsey management consultant took over running of the crisis-hit company in September 2015 after Arts Council England placed it in special measures and demanded the recruitment of a leader who would turn the business around.

She succeeded in putting ENO on a more stable footing. It has been readmitted into the Arts Council’s national portfolio, with the funding body saying it no longer has serious concerns about the company’s finances.

She will leave her role at the end of ENO’s current season, in June 2018. In a statement, she said: “I will be greatly saddened to leave this incredible institution, which it has been a privilege to lead.

“I am very proud of our achievements to date and am grateful to the extraordinary people I work alongside. When I arrived, the ENO was in crisis and the company’s survival was in real doubt.

“I am delighted that we have brought stability and secured ENO’s future.”