Despite the capital's strong economic growth, London's employment rate is almost five per cent below the UK average, the London Development Agency (LDA) has claimed.
The organisation said that getting jobless Londoners into employment was one of the biggest economic challenges facing the city in coming years.
While the UK's average employment rate is 74.4 per cent, the employment rate for London is just 69.3 per cent, with the high level of worklessness blamed on the city's relatively low skills level, plus the barriers faced by some black and minority ethnic groups, disabled people, households with children and lone parent families.
Manny Lewis, chief executive of the LDA, said: "London's economy continues to thrive.
"We want as many Londoners as possible to share in and benefit from that success. Getting those without jobs into work is one of the LDA's top priorities."
London's productivity rate is more than 40 per cent higher than in the rest of the UK, with many experts predicting that the capital's economy is set to grow even faster in the next few years.