Celts, Art and Identity
British Museum, London from 24 September. Metalwork, sculpture and artefacts by the talented Celts. Complex interlaced manuscripts, gripping beasts, mathematical spirals, knotted tendrils, gold torques, mirrors, helmets, shields and swords dredged from the Thames.
Osiris, mystères engloutis d'Egypte
Egyptian sculpture and artefacts recovered from the drowned city of Herakleion at the Institut du Monde Arabe in Paris until January.
Ladybird by Design
Illustrations for the popular children's books are now at the House of Illustration, Kings Cross, London. A time capsule of "ordinary" life in the 50s to the 70s.
The Fallen Woman
At the Foundling Museum in London from 25 September. If the Victorians were so buttoned-up, why was the Foundling Hospital necessary? Why did so many women "fall"? Artists of the time depicted cautionary tales.
Liberty in Fashion
Fashion and Textile Museum, London, from 9 October. How the Oxford Street department store's design studio influenced fashion from the late 19th century.
Sickert in Dieppe
Dark townscapes from the British impressionist at the Pallant Gallery, Chichester, until 4 Oct.
Vogue 100: A Century of StylePictures from fashion magazine Vogue at the National Portrait Gallery, London from 11 Feb 2016.
The water towers and industrial buildings recorded by Bernd and Hilla Becher at Ben Brown Fine Arts, London until 3 October, plus their Dusseldorf followers.