Calling Line Identification
The question
To ask the Secretary of State for Science, Innovation and Technology, whether he has had discussions with providers on implementing revised Call Line Identification Guidance to extend blocking to international calls which display a UK number as a Presentation Number.
Answered by Chris Bryant
The Government works closely with Ofcom who are responsible for the Call Line Identification (CLI) Guidance. Telecoms providers must comply with Ofcom’s General Conditions, part of which outlines operator’s obligations related to CLI.
In July 2024, Ofcom announced plans to update the CLI guidance, which sets out the actions operators must take to be comply with the General Condition, to extend requirements on blocking of international calls displaying a UK landline number as a Presentation Number. The updated guidance will come into effect from January 2025. Ofcom also published a Call for Input in July to explore the spoofing of UK mobile numbers from international numbers.
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