Hundreds of die-hard Harry Potter fans have set up camp in London ready for the world premiere of the last film in the franchise - days before the stars walk the red carpet.



Daniel Radcliffe, Rupert Grint and Emma Watson will be among the cast taking to the British capital's Trafalgar Square on Thursday, to unveil Harry Potter and the Deathly Hallows: Part II.



Devotees started pitching tents near the venue on Tuesday, dressed in Potter outfits and holding banners as they queued.



Some fans have even travelled from Vancouver, Canada and Denmark to catch a glimpse of the stars as they prepare to unveil the final instalment in the franchise later this week.



WENN