Sophia joined Thomas Miller in 1992 and from 1994 worked as a claims handler dealing mainly with French and Spanish members. In 2004 Sophia became the Crew Health Programme Director.
As part of her work in the Crew Health Programme, Sophia has undertaken a large number of clinic audits, implemented the standard medical form and clinic guidelines. She has also led the scheme through the largest period of growth and development with a doubling of approved clinic facilities and a four fold member increase. Sophia is a Director of Thomas Miller & Co. Ltd.