OXFORD University has slipped down the world rankings for producing the most employable graduates.

Last year the prestigious university was ranked seventh in the world but has now dropped down to fifteenth.

Oxbridge rivals Cambridge University are said to produce the most employable graduates in the UK, coming fifth overall in the seventh annual Global University Employability rankings, published by Times Higher Education.

The top spots in the table went to American universities, with the California Institute of Technology taking the top spot, followed by Harvard University, Columbia University and then the Massachusetts Institute of Technology - all in the United States.

The rankings are based on data gathered by HR consultancy Emerging from around 6,000 recruitment managers at large international firms, who were asked what they look for in graduates and to vote for the institutions they believed produce the most employable graduates.