A profile of EN10 Mark Kennedy ('Mark Stone') was composed in 2012. It can be found here: https://powerbase.info/index.php/Mark_Kennedy
This was written before both the Undercover Policing Inquiry started and Kate Wilson's case in the Investigatory Powers Tribunal was concluded.
A timeline of Kennedy's activities during his time in his undercover identity can be found here: https://powerbase.info/index.php/Mark_Kennedy#Mark_Kennedy:_a_chronology_of_his_activities
EN12 Mark Kennedy ('Mark Stone') was an NPOIU undercover officer who operated from 2001 to 2009. Although based in Nottingham for most of his deployment, he infiltrated groups across the UK and Europe. He was exposed as a police officer in October 2010 by activists. His undisclosed involvement in an action against Ratcliffe Power Station led to a trial collapsing. He had several sexual relationships, some long-term. His exposure led to several other undercover officers being exposed and the wider 'spycops' issue becoming public.