Mark Kennedy, known as Mark Stone to the environmental activist group he infiltrated.
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Undercover police officer Mark Kennedy outraged by report

The undercover police officer who infiltrated a group of environmental activists has told BBC Radio 5 live that a report into his actions has made him into a pariah.

The review by the Inspectorate of Constabulary found that Mark Kennedy, known to protesters as Mark Stone, "defied" instructions and was inadequately supervised.

His actions led to the collapse of a trial involving environmental protesters in 2011 but he told Victoria Derbyshire that everything he did was signed off.

To hear other 5 live interviews, please visit the best bits page.

Victoria Derbyshire broadcasts weekdays 10:00 to 12:00 on Radio 5 live.

  • 02 Feb 2012
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