The UK prime minister has introduced more than three decades of City of London experience into the Treasury with three key appointments – including a former chief operating officer of Goldman Sachs in Europe – to help jump-start the economy.

In his first major reshuffle of his Cabinet since forming a coalition government in May 2010, David Cameron yesterday appointed Paul Deighton, an ex-Goldmanite who is currently serving as the chief executive of the London Organising Committee of the Olympic Games and Paralympic Games, as commercial secretary to the Treasury from January next year.