I Object Subversive art from Gillray to Banksy, ancient Egyptian obscenity to a suffragette song, dug up in the British Museum by Private Eye editor Ian Hislop. • British Museum, London, 6 September to 20 January
Staging Jackson Pollock A look back at the great American artist’s British debut at the Whitechapel in 1958. • Whitechapel Gallery, London, 4 September to 24 March.
Harold Ancart: Freeze Chilled-out paintings of blue icebergs floating on silent black seas. • David Zwirner Gallery, London, 31 August to 22 September.
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