Whether it’s in devouring some of Bertie Bott’s famed Every Flavour Beans, quenching a thirst with a pint of The Three Broomsticks’ prized butterbeer, window-shopping as you make your way down Diagon Alley's crooked streets, or becoming acquainted with Hogwarts staff in the Great Hall, the Warner Bros. Studio Tour in London offers its visitors an insight into the making of Harry Potter in a way no amount of on-disc documentaries, cast and crew interviews or director commentaries ever can. We went to check it out...