The UK’s major transition as traditional landline services are being replaced with digital alternatives like VoIP is here. This change means the Public Switched Telephone Network will no longer function after December 2025 for most people, although vulnerable groups using telecare systems have until January 2027.
The change affects both households and businesses. Many households will need to connect their phones through broadband routers rather than traditional wall sockets. Businesses, especially those using PSTN for essential operations, face a more complex transition.
A recent survey from Zen Internet found 34% of UK consumers are unaware of this change. Among those over 55, this figure increases to 39%. Many small and large businesses are also unprepared, with only a small percentage having implemented digital systems.
Why Are Landlines Still Used?
Technological advances aside, traditional landlines are still common. Over half of UK households still have one, and 15% rely on them entirely. In rural areas, where internet and mobile connectivity can be unreliable, this number rises to 20%.
Landlines’ benefits bring practicality. Many people value their consistency during poor mobile reception and find them simpler for older family members. Businesses also view them as important, with 48% of respondents in the survey stating that a landline number makes companies appear more trustworthy.
Younger age groups are showing interest in retaining landlines, which is quite interesting. Among people aged 25 to 34, 44% intend to keep their landlines even after the switch to digital services.
What Are Businesses Doing?
Many businesses are unprepared for the shift to digital services. Zen Internet’s research shows that fewer than a third of businesses have adopted new systems. Some are in the process of deciding, while others have yet to start planning.
This delay could cause problems. After December 2025, businesses may receive only 90 days’ notice to switch systems or face losing access to essential communication networks. For companies relying on PSTN for day-to-day operations, this could lead to major disruptions.
Zen Internet has urged businesses to act quickly to avoid being caught out. They recommend auditing systems, researching local services, and working with technology providers to ensure a smooth transition.
David Barber, Strategy Director at Zen, said, “While our research shows good awareness that the switch off is happening there’s a clear disconnect between knowing about the end of PSTN and having a future-proof solution in place. Too many businesses may be leaving decisions around all-IP communications to the last minute, which could be a recipe for disruption.
“There’s no need to panic, but preparation is key. Businesses should start thinking about the options open to them now. Check what’s available in your area, conduct an audit of all systems that rely on the old network, and talk to your technology partners. At Zen, we’re always happy to run through what PSTN means for our customers.”
How Can Households And Businesses Prepare?
Preparation is needed to be ready for the upcoming changes. Households should contact their broadband or phone providers to learn about their options, especially if they use older systems or telecare devices. For most, the adjustment will involve plugging phones into a router, but additional equipment may be required in some cases.
Businesses are encouraged to assess systems that depend on PSTN, such as payment terminals or alarms, to identify what needs to be updated. Speaking to service providers and exploring available options can help minimise disruption.
The delayed deadline of January 2027 buys more time for those with specific needs, but the main deadline of December 2025 still applies to most users. Acting now can help avoid last-minute stress and make it that it is a seamless transition to digital systems.
