Mark Carney has officially become head of the UK’s central bank, replacing Sir Mervyn King as governor of the Bank of England.
Mr Carney, who was head of Canada’s central bank, is the first foreigner to run the 319-year-old institution.
He takes over with interest rates at an all-time low and with several stimulus programmes in place to revive the economy following the financial crisis.
Mr Carney is likely to oversee the Bank’s exit from these measures.
Financial markets are already braced for an end to the era of cheap money as central banks such as the US Federal Reserve signal a rise to more normal levels of interest rates over time.
Since the economic crisis began in 2008, the Bank has kept interest rates at historic lows and implemented quantitative easing to inject £375bn of liquidity into the financial markets.
Three members of the rate-setting Monetary Policy Committee, including Sir Mervyn, have voted for an extra £25bn of QE at the past few meetings.