After graduating from LSE in 1968, she joined
HM Treasury, where she worked on a range of macroeconomic, monetary, and financial issues. She was in succession
Principal Private Secretary to the
Chancellor of the Exchequer Nigel Lawson in 1985–86, then a deputy secretary at the Treasury, and then Deputy
Chief Economic Adviser in 1990–94. In 1994–95, she was head of the Economic and Domestic Secretariat at the
Cabinet Office. She left "just before the
collapse of Lehman Brothers in 2008" reportedly to "pursue other interests". where she is also a member of the audit and risk committees. In December 2010 she joined
BAA (now Heathrow Airport Holdings) as a non-executive director, and she is also a non-executive director of
Serco, and a trustee of
Imperial College London, and has served as President of the
Institute of Fiscal Studies. ==Personal life==