Yoko Ono: Mend Piece for London; This Is the Night Mail – review

Whitechapel Gallery, London
Ono invites visitors to repair the world by reconstructing broken teacups, while the Norwegian artist Ida Ekblad conjures surprises from a huge private collection, with a little help from WH AudenThere is something appropriate about the piles of broken crockery that greet visitors to the autumn programme of exhibitions at the Whitechapel Gallery in east London. Yoko Ono’s Mend Piece, in which gallery visitors are invited to reconstruct teacups from pottery shard