Ruby’s executive career culminated in nine years as Chief Executive of Mitie Group plc (2007–2016), where she led a period of substantial growth and diversification, working closely with major private and public sector clients. Her earlier finance and leadership roles built a strong foundation in performance management, operational efficiency and large-scale workforce management in complex, people-intensive businesses.

She now holds a broad portfolio of leadership roles across business and public life. Ruby is Chair of Airports UK, Deputy Chair of Tideway London, and a Non-Executive Director at AtkinsRéalis Inc, Thales SA and Everyman Media Group plc. She is a former President of both the British Chambers of Commerce and the Chartered Institute of Personnel and Development, reflecting her long-standing interest in productivity, skills and the world of work.

Appointed to the House of Lords in 2015 as a Life Peer, Ruby plays an active role in shaping debate and policy. She authored the UK Government’s independent Race in the Workplace review (2017), which has been widely referenced in boardrooms and policy circles, and was Chair of the UK Government’s Women’s Business Council from 2012 to 2016. She also served as a Business Trade Ambassador for the UK from 2012 to 2019 and was appointed as -Work Progression Commissioner in 2020.