Terry Spence, the federation's chairman, revealed that 448 police officers had been injured during public disorder since last July.
One of Grillo's followers said an MP from the governing majority had slapped her during the disorder.
Yesterday the Met revealed that 10 of the 56 people arrested during the disorder were under 18 and most of the others were students aged between 18 and 26.
PC Blakelock, 40, a father of three, was killed during the disorder which erupted in Tottenham, north London, following the death of Cynthia Jarrett, 49, who collapsed from heart failure after a police raid on her home.
Detective Chief Inspector Neil Hutchison of Operation Trident, which deals with gun crime in the black community, said he believed Trevor Ellis' killers were involved in looting during the disorder seen in Croydon.
Among them, it describes the use of CS smoke as a recognised "last resort" tactic to disperse groups during serious disorder.
Acting Cdr Colin Morgan, of the Public Order Command, said: "A number of officers were injured during the disorder and the Women In World War II Memorial was damaged with graffiti.
The letter further denied the claim that those who incited the riot were associated with the NSWCA and accused Harris of inflammatory conduct during the disorder.
At some point during these disorders, Ælfhere and Æthelwine appear to have come close to open warfare.
Serving during the disorders of Stephen's reign, Theobald succeeded in forcing peace on the king by refusing to consecrate Stephen's son and heir, Eustace.
