For the last three years of the Second World War, while George Heywood Hill was in the Army, Lady Anne ran the shop with the assistance of the novelist Nancy Mitford. In 1991, the shop was bought by Nancy Mitford's brother-in-law, Andrew Cavendish, 11th Duke of Devonshire.
As of 2016, the store is owned by Peregrine Cavendish, 12th Duke of Devonshire, and has been managed by his son-in-law, Nicky Dunne since 2011. The store specialises in rare books and collections of books, and had a service of assembling and delivering bespoke libraries for customers.
London's Heywood Hill curates impressive collections for discerning customers in 60 different countries -- and specializes in the obscure.