Which Harry Potter book by J.K. Rowling was published in the UK on 21 July 2007?

Harry Potter and the Deathly Hallows was published in the UK on 21 July 2007.

It is the seventh and final novel in J.K. Rowling’s original Harry Potter series. The story follows Harry, Ron Weasley, and Hermione Granger after they leave Hogwarts to search for objects connected with Lord Voldemort’s immortality. Their mission leads to the final confrontation between Harry and Voldemort.

The book was released simultaneously in many markets and became a major publishing event. Bloomsbury reported exceptionally strong first-day sales, and the novel set sales records in several countries. Its publication completed the central narrative that had begun with Harry Potter and the Philosopher’s Stone ten years earlier.

The title refers to three legendary magical objects: the Elder Wand, the Resurrection Stone, and the Cloak of Invisibility. The novel was adapted into two films, released in 2010 and 2011. The two-film adaptation explains why some audiences remember an eight-film sequence even though the original novel series contains seven books.