After completing her education, Thompson joined the civil service, and between 1978 and 1990 she worked successively for the
Departments of Industry, Trade and Prices and Consumer Protection, where, from 1982 to 1984, she was Private Secretary to the
Parliamentary Under-Secretary and then the
Secretaries of State. She became Assistant Secretary at the Department in 1990 and then moved over to the
Treasury two years later, before joining the
Department of Social Security for a year between 1999 and 2000. That was followed by a move to the
Department for Education, where she was Director of Finance (2000–03), and then of the Higher Education Strategy and Implementation Group (2003–06). and also a member of the
Audit Commission (2013–15), and in 2014 co-chaired the Higher Education Commission's inquiry into financing higher education; she emphasised the positives that free higher education could provide for British research.
The Times wrote that Thompson was a "distinguished" civil servant, who "was renowned for being direct and fair." == Personal life, family and interests ==