The historian and presenter on his new book about 12,000 years of British art, BBC philistinism and Banksy’s ‘money-making machine’.

32 x 30.7 x 4 cm. (12.6 x 12.1 x 1.6 in.) ...

On Thursday, a judge acquitted two environmental activists who glued themselves to a J.M.W. Turner painting at Manchester Art ...