National Gallery in London steps up security after activists’ art attacks

Museum says it is acting ‘to protect our visitors, staff and collection’ after five incidents in just over two years

The National Gallery has announced a raft of increased security measures after protesters attacked paintings including Vincent van Gogh’s Sunflowers, John Constable’s The Hay Wain and Diego Velázquez’s The Rokeby Venus.

From Friday morning there will be a ban on bringing into the London gallery any liquids except for baby formula, expressed milk or prescription medicines.