Image © Mayor's Office for Policing and Crime (MOPAC)

Review of the Metropolitan Police Services Gangs Matrix

December 2018

This Review recommends that there is a comprehensive overhaul of the Matrix Operating Model both to restore trust in the Matrix and also to bring it into line with data protection legislation. This overhaul must be completed by the 31st December 2019. The Review does recognise that a Gangs Matrix is a necessary law enforcement tool for reducing violent crime in London. However, the Review also identifies that the representation of young, black males on the Matrix is disproportionate to their likelihood of criminality and victimisation and recognises that communities in London have deep reservations about how the Matrix operates. The Review found significant issues around public understanding of the Matrix and a lack of transparency on the part of the Metropolitan Police Service (MPS) in communicating the aims and purpose of the Matrix – not only to the public but also to practitioners. Furthermore, an investigation by the Information Commissioner’s Office (ICO) found that, whilst there was a valid purpose for the MPS’ use of the Gangs Matrix, inconsistency in the way it was used led to multiple and serious breaches of data protection laws.


The Review also recommends that MOPAC and the MPS engage with the Equality and Human Rights Commission as we work to ensure that the Gangs Matrix operates- and is seen to operate - in a way which upholds the human rights of those included on it, and without any element of discrimination. There are further recommendations aimed at improving the operation of the Gangs Matrix as well as building trust in the Matrix among the public and practitioners.

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Related Resources:

1) Review of the Metropolitan Police Service Gangs Violence Matrix: Update on the implementation of the MOPAC recommendations     


2) Review of the Metropolitan Police Service Gangs Violence Matrix - A one-year update



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