On 1 April 2009 , at the 2009 G20 London summit protests , a member of the Territorial Support Group , the SPG 's successor organisation , struck Ian Tomlinson , a newspaper vendor , who collapsed and died . The parallels in the deaths of the two men proved to be the catalyst in the release of the Cass report to the public . Stephenson also officially apologised to Peach 's family . That June the Metropolitan Police commissioner , Sir Paul Stephenson announced that Cass 's report and supporting documentation would be released
2009 G20 London summit protests
2009 G20 London summit protests
Death of Blair Peach