Gaynor joined the MHRA as a GDP Inspector in May 2009 formally working in the pharmaceutical wholesale distribution industry for over 10 years as a Project Manager and Business Compliance Manager. Her roles included auditing the organisation to ensure legal compliance with regulatory bodies including compliance to GDP. Gaynor was also involved in a number of large projects including the management of a building project and the implementation of automation in a large distribution site. She has qualifications in Project Management and Health and Safety. Gaynor spent two years as the MHRA's Health and Safety Manager achieving BS18001 certification. She returned to her GDP Inspector role in July 2013 where she is a member of the implementation team for conducting inspections on API distributors and coordinator of the GDP symposium.