Mr Justice Barton had been asked to rule on the film after the British Government had announced plans to have it distributed throughout the nation's schools.
Justice Barton found 'nine scientific errors' in the film and accused Mr Gore of "alarmism" and "exaggeration". Although he agreed that the film was "powerful, dramatically presented and highly professionally produced," he said that it was a political film and was so "one-sided" that it needed to be accompanied with other materials that provided pupils with balance if the Government was to continue with its plans to distribute it to schools.
The nine errors are summarised in the Daily Mail graphic that is reproduced on the right (click to enlarge).
Even the environment analyst of the BBC - which has been at the forefront of campaigning for action on climate change and was recently forced into cancelling a day of programmes dedicated to the subject - said the ruling would be "embarrassing" for Al Gore.
The Conservative Party's environment spokesman, Peter Ainsworth, has called upon the Government to prepare "a proper, up to-date, education pack about climate change - based on current evidence" and distribute that to schools, rather than the Al Gore movie.