Eithne is a former senior Partner of A&L Goodbody, international law firm, having worked with the firm for 35 years. There she specialised in mergers and acquisitions, corporate finance and advising on a range of corporate law matters. She headed up A&L Goodbody’s London office for 3 years and has held a number of management positions in the firm, including as a member of the firm's Policy Committee and the Partner Selection Committee. Eithne has also regularly been involved in the recruitment and development of young lawyers. She holds a degree from Trinity College Dublin and a Diploma in European Law from University College Dublin and is a qualified lawyer. Eithne is former non-executive director of One 51 plc an environmental services, renewable energy, food and speciality plastics business (now IPL Plastics plc) where she also chaired the Nominations Committee. She is also a lecturer and course tutor in Company Law with the Law Society of Ireland and a member of the Institute of Directors of Ireland.