Anti-police sentiment was a significant factor in the summer riots in cities across England, according to a major study on the causes of the unrest.

The study by London School of Economics and the Guardian newspaper involved interviews with 270 rioters.

Of those interviewed, 85% cited anger at policing practices as a key factor in why the violence happened.

Four consecutive nights of looting and arson in August left five people dead and more than 4,000 suspects arrested.

BBC Newsnight has had exclusive access to the results of the LSE-Guardian study and on Monday 2 December 2011 will broadcast an in-depth report on the causes of the riots and how those who took part feel about the events now in the rioters own words at 10.30pm on BBC Two.