The school, on Grasmere Road, teaches children aged between two and 11 years old.

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But Mr Williams-Thomas, a former Surrey Police detective constable, said his three children, aged between eight and 13 years old, were "very shocked and embarrassed" by Mr Holwell's nudity.

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Vitamin D supplements are recommended for all people at risk of a deficiency, including all pregnant and breastfeeding women, children under five years old, people aged over 65, and people at risk of not getting enough exposure to sunlight.

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