Fitch downgrades UK credit rating to AA+

The Fitch credit ratings agency has downgraded the UK to AA+ owing to a weakened economic outlook.

The move, after Moody's downgrade in February, came as Chancellor George Osborne defended the government's austerity plan.

Fitch said its downgrade primarily reflected a weaker economic and fiscal outlook.

Fitch said its downgrade "primarily reflects a weaker economic and fiscal outlook" but returned its outlook to "stable", removing the threat of further rate action in the near term.

Ed Balls, Labour's shadow chancellor, said: "This is another humiliating blow to a prime minister and chancellor who said keeping our AAA rating was the number one test of their economic and political credibility.

In its twice-yearly World Economic Outlook published on Wednesday, the IMF slashed its forecast for growth to 0.7% in 2013 after saying in January that the country's economy could expect 1% growth.