'British police infiltrated 124 movements since the 1970’s and would even engage in sexual relationships with targets.'

Individuals at the center of the incident warn that it may have been part of a wider British program targeting anti-establishment organizations such as Wikileaks as well as right-wing movements and politicians throughout the US and Europe.
Disappearance Leads To Scrutiny Of Voice Of Europe's Editor
The operation was first exposed on January 1, 2019 by independent researcher Nicholas Monroe, who had grown concerned over the disappearance of Peter Imanuelson, a Norwegian-born UK national living in North Yorkshire and blogging under the alias Peter Sweden.