One in 20 UK adults does not believe the Holocaust took place, a survey suggests, while one in 12 believes its scale has been exaggerated.

Almost two-thirds of respondents (64%) either could not say how many Jews were murdered or “grossly” under-estimated the number, a survey of more than 2,000 people by the Holocaust Memorial Day Trust found.

On Sunday, hundreds of thousands of people, including survivors, politicians and members of the public, will gather to mark Holocaust Memorial Day and remember its eleven million victims, six million of them Jews.

More than 11,000 activities are expected to take place, while ceremonies will be held in London, Scotland, Wales and Northern Ireland.

A national commemorative ceremony will take place in Westminster to mark the day, which is also acknowledging the 25th anniversary of the genocide in Rwanda and 40 years since the end of the genocide in Cambodia.

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