Dilnot was director of the
Institute for Fiscal Studies from 1991 to 2002. Dilnot was a presenter on
BBC Radio 4's programme about statistics
More or Less. Many of the items on the programme deal with the misuse and fabrication of statistics. Dilnot and Michael Blastland wrote ''
The Tiger That Isn't, which was based on More or Less''. Dilnot became principal of
St Hugh's College in 2002, then the only head of house at an Oxford college educated at a comprehensive school. He became a
Pro Vice-Chancellor of Oxford University in 2005. On 16 March 2011, it was announced that "with very mixed emotions" Dilnot was to leave St Hugh's College in September 2012 to become warden of
Nuffield College, Oxford, "which will allow me to spend much more time doing economics again." He retired in 2024. In 2011, the government nominated Dilnot to be Chair of the
UK Statistics Authority. Parliament formally endorsed the appointment on 13 December 2011. Andrew Dilnot is no longer chair of the authority, having stood down in 2017. In 2018, Dilnot was appointed Chair of the Geospatial Commission, supported by £80 million of new funding, to drive the use of location-linked data more productively. In 2019, Dilnot became chair of the Health Foundation's oversight board for the REAL Centre (formerly Health and Social Care Sustainability Research Centre), which was set up to help health and social care policymakers consider long-term implications of their funding, design and delivery decisions. Dilnot has served on the Social Security Advisory Committee, the National Consumer Council, the Councils of the
Royal Economic Society and Queen Mary and Westfield College, as a trustee of the
Nuffield Foundation, and as chairman of the Statistics Users Forum of the
Royal Statistical Society. ==Commission on Funding of Care and Support==