Seventeen people were arrested by the Metropolitan Police this morning, after dawn raids by more than 800 officers across 24 properties.
The dawn swoop was part of an investigation by specialist Met detectives working alongside HMRC and the Financial Conduct Authority into a suspected organised crime group.
Properties in London, Essex, Hertfordshire, Cambridgeshire and Suffolk were searched, and there is expected to be an ongoing police presence for some days.
One officer taking part in the operation was stabbed in the leg while carrying out a warrant at an address in Cockfosters.
He was treated at the scene by colleagues and paramedics before being taken
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