Leigh Jostins FCCA graduated from Manchester University before completing a business postgraduate course at Leeds University. She worked in the music and publishing business and went on to become the accounts manager for Tetra modelmakers. She joined Marks Barfield in 1989 and is responsible for all aspects of accounts management, the day-to-day running of the business finances and human resources management. She worked on the initial business plan for the London Eye and managed its accounts during the pre-construction phase. In 1998 she became a director of Marks Barfield Architects. She qualified as a certified accountant in 2001 winning the ACCA New Accountant of the Year Award.