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Gabriel Orozco

The first solo exhibition for this celebrated contemporary Mexican artist who recently subverted the British establishment with his well-received St James's installation, Empty Club. Witty and ingenious.

ICA, The Mall, London SW1 (0171-930 0493). To 22 Sept


A gentle look at the photography of the 'writer's friend' Mark Berson, snapper for almost a half-century of such literary giants as TS Eliot, Iris Murdoch and Kingsley Amis. Does every picture tell a story?

National Portrait Gallery, St Martin's Place, London WC2 (0171-306 0055). Friday to 13 Oct

Outsiders & Co

A thoughtfully assembled look at the genre of "Outsider Art". A bevy of self-taught talent, and none the worse for that. Includes Alfred Wallis, Scottie Wilson, Albert Louden and the weird scribbles of medium Madge Gill.

England & Co, 14 Needham Rd, London W11 (0171-221 0417). To 4 Sept