Iain Duncan Smith

Iain Duncan Smith's most significant achievement is the Centre for Social Justice, which he founded in 2004. The think tank has been influential in shaping Conservative policy on poverty and social breakdown. Its 2013 report on modern slavery led directly to new legislation, a rare example of a think tank's work becoming law.His tenure as Work and Pensions Secretary saw the introduction of Universal Credit, one of the most ambitious welfare reforms in modern British history. He also played a key role in the Vote Leave campaign, contributing to the UK's decision to leave the European Union. These accomplishments, though controversial, mark him as a figure of substance in British politics.