 "The Guardian" newspaper has suggested that Lambert might have been prosecuted under his alias, and thus perhaps gave false testimony in court, for having distributed "insulting leaflets" outside a London butcher's shop.The Derbyshire Constabulary launched an investigation called Operation Herne in 2011 which combined many allegations against the police including this one and those pertaining to the death of Stephen Lawrence.It concluded that errors were made, but stopped at assigning any individual blame as far as this case was concerned.