London police's Gangs Violence Matrix is racially discriminatory, incompatible with international human rights law, and not fit for purpose, according to a report by Amnesty International.

The report found that 78 percent of the individuals on the Gangs Matrix were Black, which was disproportionate to both London's Black population (13 percent) and the percentage of Black people responsible for serious youth violence (27 percent).

Amnesty also discovered that 40 percent of people listed had no record of involvement in violent offenses in the past two years, and 35 percent had never committed any serious offence.

In addition, Amnesty accused London's Metropolitan Police Service (MPS) of unreasonably conflating youth culture with crime, poorly defining the concepts of "gang" and "gang member", leading to the arbitrary identification of individuals and to stigmatisation and other negative consequences.

It also took issue with the criteria used for adding and removing people from the database, which it argued were unclear, and discovered that children as young as 12-years-old were included.

Futhermore, information was being shared with various government agencies, potentially impacting individuals' access to services like housing and education, Amnesty said.