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Voice over Internet Protocol

Asked by Helen MorganLiberal DemocratDepartment for Science, Innovation and TechnologyTabled Answered 12 December 2025UIN 97363

The question

To ask the Secretary of State for Science, Innovation and Technology, what estimate she has made of the number of vulnerable customers impacted by ongoing PSTN switchover programmes.

Answered by Kanishka Narayan

There are an estimated 2 million telecare users in the UK, and many customers may be identified as vulnerable for other reasons, such as landline-dependency. The government does not hold data on the specific number affected by the industry led PSTN migration.

The Government is committed to keeping vulnerable people safe during the PSTN migration. In November 2024, the Government secured further commitments from the telecoms industry to protect vulnerable customers via the non-voluntary migrations checklist.

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