J.K. Rowling is the author of the record-breaking, multi-award-winning Harry Potter novels. Loved by fans around the world, the series has sold over 450 million copies, been translated into 79 languages, and made into eight blockbuster films. She has written three companion volumes in aid of charity: Quidditch Through the Ages and Fantastic Beasts and Where to Find Them (in aid of Comic Relief), and The Tales of Beedle the Bard (in aid of Lumos), as well as a film script inspired by Fantastic Beasts and Where to Find Them. J.K. Rowling has also collaborated on a stage play, Harry Potter and the Cursed Child Parts One and Two, which opened in London's West End in the summer of 2016. In 2012, J.K. Rowling's digital company Pottermore was launched, where fans can enjoy her new writing and immerse themselves deeper in the wizarding world. J.K. Rowling has written a novel for adult readers, The Casual Vacancy, and also writes crime novels under the pseudonym Robert Galbraith. She has received many awards and honours, including an OBE for services to children's literature, France's Légion d'honneur and the Hans Christian Andersen Award.

Gryffindor, Slytherin, Hufflepuff, Ravenclaw . Twenty years ago these magical words and many more flowed from a young writer's pen, an orphan called Harry Potter was freed from the cupboard under the stairs - and a global phenomenon started. Harry Potter and the Philosopher's Stone has been read and loved by every new generation since. To mark the 20th anniversary of first publication, Bloomsbury has published four House Editions of J.K. Rowling's modern classic. These stunning editions each feature the individual house crest on the jacket and line illustrations exclusive to that house, by Kate Greenaway Medal winner Levi Pinfold. Exciting new extra content includes fact files and profiles of favourite characters, and each book has sprayed edges in the house colours. Available for a limited period only, these highly collectable editions are a must-have for all Harry Potter fans.

I've yet to meet a ten-year-old who hasn't been entranced by its witty, complex plot and the character of the eponymous Harry

Spellbinding, enchanting, bewitching stuff

Teachers say a chapter can silence the most rowdy of classes

One of the greatest literary adventures of modern times

The Harry Potter stories will join that small group of children's books which are read and reread into adulthood