She has been the Chief Scientist at the Met Office since 2009.
She is also a Visiting Professor in the Department of Meteorology at the University of Reading, where she held, prior to appointment to the Met Office, the positions of Director of Climate Research in the Natural Environment Research Council (NERC) National Centre for Atmospheric Science and founding Director of the Walker Institute for Climate System Research.From 2015 to 2016 she was one of the members of the High Level Group of Scientific Advisors of the European Commission Scientific Advice Mechanism, part of its Directorate-General for Research and Innovation.