Mark Littlewood is director general of the free-market think tank, the Institute of Economic Affairs. Former chief press spokesman for the Liberal Democrats and onetime advisor to David Cameron's Conservative Party, Littlewood originally spoke out in favour of EU integration but since shifted to euroscepticism and supported the Leave vote in the 2016 referendum.
Littlewood was listed as the 45th most influential person on the British right by broadcaster Iain Dale in 2017.