The art works - including a painting of Twickenham Church, signed by John Constable but not believed to have been painted by him - were in storage when they were stolen in December. Police only released details of the theft last month after investigations into a nationwide art theft ring.

Two of the paintings were part of a collection of art works bequeathed to Twickenham Borough Council by Mrs Nellie Ionides. The third was on loan to the gallery. Her grandson, former Twickenham MP Toby Jessel, said: "Richmond is in the position of trustee and custodian on behalf of the people of Twickenham. It is not obvious that the paintings are being particularly well looked after."

Councillor David Williams, leader of the council, said he remained hopeful that the paintings would be returned.