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Policy and legislation in a criminal investigation

Freedom of information request reference no: 01.FOI.23.032321

I note you seek access to the following information:

Could you please show me the policy and legislation as to why it is not possible to get this data showing the cell mast locations.

Decision

I have today decided to disclose the located information to you in full.

Please find below information pursuant to your request above.

I have been informed by our Met Intelligence Unit that in a criminal investigation information can be collated using the following techniques, forensic downloads of the devices and an application to the telephone operators for communications data using the powers under the Investigatory Powers Act.

The following link may assist:
National ANPR standards for policing and law enforcement (accessible version)

9.4.3. Provisions to safeguard the location of ANPR infrastructure
In order to safeguard the national ANPR infrastructure, apart from data obtained from a Mobile ANPR system, the precise location for an ANPR read obtained from a camera will not be disclosed during an investigation, nor included in evidence unless the controller with responsibility for the camera that recorded the data has been consulted and provided written consent for that disclosure or for evidence to be provided.