A plan to double the size of Oxford and turn it into a "garden city" has won a £250,000 national economic prize.

Design consultants David Rudlin Nicholas Falk, of URBED, entered their proposal for the second annual Wolfson Economic Prize.

The competition, launched in November, asked designers: "How would you deliver a new Garden City which is visionary, economically viable, and popular?"

Using Oxford as a case study, URBED’s scheme proposed building thousands of new homes in four planned extensions to the city.

These would be just north of Abingdon, just south of Blackbird Leys, East of Headington and north of Kidlington.

In May planning minister Nick Boles wrote to Wantage MP Ed Vaizey to say that the Government supported new settlements in line with garden city principles.

You can see the full plan at policyexchange.org.uk