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For more than a century we have worked to protect the UK from a range of national security threats.

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The National Protective Security Authority (NPSA) is part of MI5 and offers advice to businesses and organisations to help keep them and their customers safe from a range of national security threats.

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Mull of Kintyre 30th anniversary

Yesterday marked 30 years since the Mull of Kintyre helicopter crash, in which 29 people lost their lives including four members of MI5. Source link