Core UK cities like Birmingham and Nottingham are struggling to attract top graduates to drive economic growth. according to a new report.
One in four new graduates from UK universities in 2014 and 2015 were working in London within six months of finishing their degree, according to a study by the Centre for Cities think tank.
Just over half of Oxbridge graduates moved to London to work after finishing university, compared with just 2% going to Birmingham and Bristol respectively, it was found.
The Government was urged to take action to help cities attract and retain graduates.
Alexandra Jones, chief executive of Centre for Cities, said:
"The Government will not achieve its vision of extending prosperity and growth across the country unless it takes steps to help more cities attract and retain the UK's top talent.
"Wage subsidies and other specific graduate retention policies will not tackle the root causes of this issue. Instead, the priority for national and local leaders should be strengthening city-region economies and increasing local demand and opportunities for graduates."
The report called for measures in this week's Autumn Statement to boost large-scale housing and transport projects.