The chancellor, Surrey-based entrepreneur and protege of David Cameron. He served as Foreign and Health Secretary while twice challenging - unsuccessfully - for the Conservative Party leadership. In just a few days he tore up most of the prime minister's economic policy. Now he has to try and restore the government's credibility with the markets while attempting to deal with the impact of the cost of living crisis. With Timandra Harkness. Produced by Bob Howard

Researchers: Alice Struthers, Ellie House, Matt Toulson