Our pick of this week’s art events: 12 – 18 June

From a flying machine at the Hayward Gallery to the optical art of Bridget Riley, we guide you through the week’s top art events.

Our pick of this week’s art events: 21 – 28 March

From abstract paintings at the National Portrait Gallery to a British art sale at Sotheby’s.

An exhibition tracks Bridget Riley’s return to the stripe at key points in her career, writes Chris Fite-Wassilak.