A survey of art experts found 60% in favour of the British Museum in London keeping the Elgin Marbles.
The marbles, which are 2,500 years old, were presented to the London institution almost 200 years ago after being removed from the Parthenon temple at the Acropolis by Lord Elgin. The debate over whether they should be returned to Greece raging ever since.
Greece maintains they were taken illegally during the country's Turkish occupation and should be returned for display in Athens, which the British Museum and the Government reject.
Public relations firm Bell Pottinger Arts spoke to 70 journalists and leaders of arts organisations in the UK, the Middle East and Asia about the works, also known as the Parthenon Marbles.