This year's annual lecture, Numbers and public policy: the power of official statistics and statistical communication in public policy-making, was given by Andrew Dilnot CBE. Andrew is Chair of the UK Statistics Authority, as well as Warden of Nuffield College, Oxford and recent chair of the Commission on Funding of Care and Support, which published its report Fairer Care Funding in July 2011. Andrew was director of IFS between 1991 and 2002.