Bosses at film studio Warner Bros. threw the lavish afternoon bash in a field near the studios in Hertfordshire, England where the popular movies are shot.
Radcliffe and Grint partied alongside other Potter actors including Tom Felton, Jim Broadbent, and David Thewlis – accompanied by his partner, Pushing Daisies star Anna Friel – to celebrate the end of filming on the popular series.
They enjoyed traditional funfair rides including dodgems and a ghost train, and a fleet of ice cream vans was on hand to keep the revellers cool.
But one star was notable by her absence – leading lady Emma Watson, who played Hermione Granger in the wizard movies, did not attend the bash.
Shooting on the final film in the series – Harry Potter and the Deathly Hallows: Part II – finished in June (10). It is due to hit the big screen next year (11).
