Looted in Syria – and sold in London: the British antiques shops dealing in artefacts smuggled by Isis

‘Antiquities shouldn’t be bought and sold in private collections’ … Mark Altaweel examines objects from the Institute of Archaeology’s collections in London. Photograph: Martin Godwin for the Guardian ‘Antiquities shouldn’t be bought and sold in private collections’ … Mark Altaweel examines objects from the Institute of Archaeology’s collections in London. Photograph: Martin Godwin for the Guardia