More than 3 million UK households have already moved from traditional copper-based landlines to broadband-powered phone services ahead of the nationwide switch-off scheduled for January 2027. Telecom providers are urging customers not to delay the transition as the deadline approaches.
The move marks one of the largest infrastructure changes in British telecommunications in decades. Instead of calls traveling through the Public Switched Telephone Network (PSTN), voice services will increasingly run over broadband connections using Voice over Internet Protocol (VoIP).
The transition is being led by telecom companies rather than the UK Government and applies across providers operating in the country. BT recently launched a public awareness campaign intended to encourage households to prepare before existing services are retired.
For many users, the change is expected to happen with limited disruption. Existing phone numbers are generally retained and, according to BT, most existing handsets remain compatible with Digital Voice services.
UK Landline Network Moves From Copper to Broadband Technology
According to BT, more than 3 million households have already switched to broadband-powered landlines, often marketed under the name Digital Voice. The company’s campaign, titled Don’t Put Off The Switch, comes as providers prepare for the withdrawal of traditional analogue services by January 31, 2027.
The copper-based PSTN network has supported communications across Britain for decades, but providers say maintaining the aging infrastructure has become increasingly difficult. Spare parts have become harder to source as manufacturers reduce production of older components.
Under the new system, calls are delivered through broadband connections rather than dedicated phone lines. VoIP technology is already widely used in services such as WhatsApp, Skype, and FaceTime.
According to the reports, digital landline services can support features unavailable through traditional systems, including call queuing, number blocking, placing calls on hold, and managing multiple participants in a conversation.
Providers also state that audio quality can improve under the newer setup and that pricing differences between certain call types are reduced because calls are routed through internet connections. The UK’s transition mirrors similar developments already underway or completed in countries including Germany, France, the Netherlands, and Australia.
Providers Warn Customers Not to Ignore Transition Notices
Telecom providers have emphasized that customers who ignore communications about the change risk losing phone and broadband services as the deadline nears.
According to statements from BT Chief Executive Allison Kirkby, the company views the migration as part of a broader modernization of the country’s digital infrastructure. BT said it expects to invest more than £40 billion in UK infrastructure between 2020 and 2030.
On the network side, BT-owned Openreach currently covers 21 million premises with full-fiber connectivity, representing around 60% of UK homes. The company stated that expansion continues, with additional properties being connected each week.
BT also reported that 80% of private and public sector organizations have already transferred voice services to digital systems. Separately, the company said it blocked more than 91 million scam and spam calls to customers over the last year using capabilities available through newer networks.
Support measures remain part of the rollout. According to BT, free engineer home visits are available for customers needing assistance, while backup power solutions are being provided for vulnerable users who rely on landline access during power outages.
