Essentra confirmed the news in a Stock Exchange announcement on Monday as O’Rourke published its latest results showing a return to profit a year after suffering the worst loss in its history.

Baker has been at O’Rourke since 2020 following stints at McCarthy Stone, Barclays Bank and PwC.

She is also a non-executive Director at Vistry Groupand will take-up her new role from November 5.

Scott Fawcett, Essentra CEO, said: “Rowan is a highly experienced Chief Financial Officer. I am delighted she is joining the Board and the Company as her financial expertise and plc experience will further support the delivery of our growth strategy.”

Baker added: “I am delighted to join Essentra and I look forward to working with Scott and the Board in enhancing growth initiatives, supporting operational effectiveness and making continued progress on strategic objectives.