A JMW Turner street scene described as the greatest painting of Oxford will remain in the city after the Ashmolean Museum raised the money to buy it in just four weeks.

The High Street, Oxford, by Turner, was left to the British nation in lieu of inheritance tax, but its value of £3.5m was more than the tax due. That led to a fundraising campaign by the Ashmolean, where the painting has been on loan from a private collection since 1997.