On 12 December 1980, the British journalist Duncan Campbell revealed the existence of the Standing Committee on Pressure Groups (SCOPG) which set up by the Hong Kong government to increase its control over the opposition groups under secret surveillance in New Statesman and PTU was one of the pressure groups.
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In 1991 he made an extended appearance on the TV discussion programme After Dark, chaired by Baroness Helena Kennedy QC, alongside Duncan Campbell, Jane Moore, Clare Short, Anthony Howard and others.
Duncan Campbell later stated in PC Pro magazine that their credit card charges and IP addresses were traced through the Landslide site, and both were found to have accessed sites which had nothing to do with child pornography.
He subsequently worked with colleagues Kenneth BM Reid, Robert Sim and Duncan Campbell on developing understanding of the Complement Proteins associated with defence against infection.