Unemployment has risen at its slowest quarterly rate since May 2011 according to official figures released today.
Data from the Office for National Statistics shows that unemployment for the three months to January 2012 rose by 0.1%.
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A man, reportedly armed with a knife and a baseball bat, has been detained close to the event.
Tens of thousands of people are expected to line the streets this weekend.
Courses will begin in September next year.