Dr Turner's condition, which also afflicted comedian Dudley Moore, also left with her with badly slurred speech, and she had some difficulty swallowing.

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"I don't doubt some kids are super smart, can 'spot a perv' and avoid them with no difficulty, but... not everyone has that talent, " he said.

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"The greatest concern was the vulnerability of some of the young people held and the difficulty of holding them safely in a large establishment with a wide spread of population a long way from home, " Mr Hardwick added.

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