Britain Hangs Up: The Landline Switch Off Arrives in January 2027 – And Your Real Deadline Is October

The phone in your parents’ hall has a date of death: 31 January 2027. That’s when the landline switch off happens for good – the day BT retires the copper-era phone network that’s carried British voices since the 1980s, and every analogue line in the country goes silent. The landline switch off in 2027 has been coming for years, delayed once already, and it’s now under five months away. But here’s the bit almost nobody has clocked: the sensible deadline isn’t January at all. It’s October, when Openreach’s prices for the old copper phone lines are set to double, and when the last easy engineer appointments before Christmas start disappearing.

Around 2.8 million lines were still sitting on the old network as of March, according to Openreach – more than half a million of them serving businesses. The number’s been falling fast all year, but the people left are exactly the people you’d worry about: voice-only customers with no broadband, older people, households where the phone on the hall table is the phone, full stop.

And if that describes someone you love, September is the month to sort it, and the rest of this piece explains why the calendar matters more than the kit.

What the landline switch off in 2027 actually switches off

The thing being retired is the PSTN – the Public Switched Telephone Network. It’s the analogue system that carries a call as an electrical signal down a copper wire to an exchange, the same basic idea Britain has used for over a century. BT and the other providers are replacing it with digital voice services, where your call travels over your broadband connection instead. Your phone stops plugging into the little white socket on the skirting board and starts plugging into the back of your router.

What’s not being switched off matters just as much. The copper wires themselves aren’t being ripped out – plenty of homes will carry on getting broadband over them for years yet, and this is a separate thing from the full-fibre rollout. Your phone number stays. Your monthly price generally stays. And BT reckons 99% of existing handsets work fine once they’re plugged into the router, so the cordless phone you bought from Argos in 2019 almost certainly survives. The Which? guide to Digital Voice is worth a read if you want the full picture, but the short version is that for most households the switch is a five-minute job: unplug from the wall, plug into the hub, done.

For most households. Not all. More on that below.

Three million homes switched without noticing

Here’s the strange part of this story: the biggest change to Britain’s phone system since trunk dialling has mostly happened already, and barely anyone mentions it at dinner. BT announced in March that more than three million of its households were on Digital Voice, alongside 80% of its business voice customers. Ofcom’s numbers tell the same story from the other end – the count of customers still on the old network dropped from 5.2 million in July 2024 to 3.2 million a year later, and it’s kept falling since.

Most of those people didn’t do anything dramatic. A letter arrived, then an email, then the router did the work. If you’ve taken out a new broadband deal in the last couple of years, you’re almost certainly on a digital line already, whether you knew it or not – Openreach stopped selling new analogue lines back in September 2023.

The migration has gone better than the doomsayers predicted, and it’s worth saying so. The early horror stories from 2022 and 2023 – people cut off in storms, telecare alarms failing silently – forced a pause, a proper rethink and a formal charter of protections. The rerun has been slower, duller and safer. Dull is what you want from infrastructure.

But “most people are fine” is doing a lot of lifting in that paragraph. The House of Commons Library briefing on the switchover makes the point that the households left on analogue lines skew heavily towards the people the industry finds hardest to reach: those with no broadband, no email address and no interest in acquiring either. They aren’t refusing to switch. They just haven’t been switched yet, and some of them won’t understand the letters when they come.

Why October matters more than January

Openreach confirmed last November that wholesale prices on the remaining legacy copper phone lines are set to double by October 2026. That’s a deliberate shove – the operator wants the stragglers moved, and making the old thing expensive is how telecoms has always done persuasion. Whether your provider passes that on to you directly or quietly absorbs it, the message is the same: staying analogue past the autumn is the premium option, which is a funny thing for a 40-year-old copper wire to be.

There’s a more practical reason to move early, too. Every provider in the country has to migrate its remaining analogue customers within the same five-month window, through the exact stretch of the year – storm season, Christmas, the January cold snap – when engineer visits are hardest to book and power cuts are most likely. The households that need an engineer visit and a personal walkthrough are the ones that should be at the front of that queue, not the back. Booking the sensible slot before the rush is the same logic as booking your log burner installer in August – the deadline’s in winter, so the work happens now.

January is the cliff edge. October is the last comfortable exit.

Does it survive? The kit in your house, one line at a time

Most of the anxiety about the switch-off comes from not knowing which of the things plugged into that little white socket will carry on working. Here’s the list, honestly assessed. The pattern is simple: anything that just makes and takes calls is fine; anything that dials out on its own, silently, in the small hours, needs a human to check it.

Plugged into the phone socket	Works after the switch?	What to do
Cordless phone bought in the last 15 years	Yes	Unplug from the wall, plug into the router’s phone port (or the adapter your provider sends).
Old corded phone, including the retro rotary one	Almost always	Same again. Pulse-dial rotary phones may need a cheap converter; BT says 99% of handsets are fine.
Telecare pendant or fall detector	Not reliably	Tell the provider before the switch. Engineer visit, tested on the day, digital-ready unit from the telecare firm.
Burglar alarm that dials a monitoring centre	Often not	Ask the alarm company for an IP or SIM communicator. Budget £100-£200 fitted.
Fax machine	Sometimes, badly	Stop faxing. Failing that, an online fax service or a VoIP adapter.
Lift emergency phone in a block of flats	Not reliably	Landlord or managing agent’s job. Ask them in writing whether it’s been done.
Older card terminal in a shop	Usually not	Swap to a broadband or mobile terminal. Most acquirers will do this free.
Extension sockets round the house	Depends	They go dead unless your provider connects them to the router. BT can arrange this for Digital Voice customers; the alternative is one cordless base plus extra handsets.

That last row catches people out more than any other. A house with a phone in the hall, one in the kitchen and one in the bedroom, all wired to separate sockets, ends up with a single live port on the back of the router. The cheap fix is a cordless base station and two extra handsets – about £40 at Argos for a Panasonic set – which is how most switched-over households have quietly ended up.

The power cut problem is real – but smaller than the fuss suggests

The one legitimate loss in all this: an old analogue phone drew its power down the phone line itself, from the exchange. The grid could fail and the phone in the hall would carry on working – which is why, during Storm Arwen in 2021, plenty of households in the dark could still ring their families. A digital phone dies with your router the moment the power goes.

That sounds alarming, and for about 95% of households it isn’t. If you own a charged mobile, you have a power-cut phone. Ofcom’s rules require providers to make sure you can reach 999 for at least an hour in an outage, and under the industry’s charter the big providers go further for anyone vulnerable – free battery back-up units that keep the line alive, free engineer visits, the lot. BT, Sky, Virgin Media, TalkTalk and Vodafone all offer this; the catch is that you (or your mum) generally have to be flagged on their system as needing it, which means somebody has to pick up the phone and tell them.

That’s the real job here. Not buying kit – making a phone call.

Two things to ask when you do. First, how long the battery unit they’re offering actually lasts: the early BT units managed roughly an hour, which is the Ofcom minimum and not much use in a storm that takes the power out overnight, and the units being sent out now are rated for longer. Get the number of hours in writing. Second, whether a hybrid handset is an option – BT sells one that falls back to the EE mobile network when the broadband drops, which is a better answer for a rural house than any battery. If the household isn’t classed as vulnerable and doesn’t qualify for the free kit, a small router UPS from Amazon costs £30-£50 and keeps the hub and phone alive for a few hours. Not glamorous. Better than a torch and a hope.

If the household in question is rural, has patchy mobile signal and a history of long outages, push harder: ask for a battery back-up unit outright, and don’t accept a shrug. This is also the household that shouldn’t wait for the January scramble.

Telecare pendants, burglar alarms and the fax machine in the loft

The reason the whole switch-off was delayed from 2025 to 2027 comes down to one number: roughly 1.8 million people in the UK rely on telecare – the pendant alarms and fall detectors that let older and disabled people live at home and summon help by pressing a button. Many of those devices were built for an analogue line and don’t reliably work over a digital one. A phone that doesn’t ring is an inconvenience; a fall alarm that fails silently is a tragedy, and there have been documented cases.

The fix exists and it works, but it needs coordination. Tell the phone provider a telecare user lives at the address and the switchover changes shape entirely: an engineer comes out, does the swap in person and tests the alarm before leaving. Telecare firms have spent the last two years shipping digital-ready units. None of that machinery engages, though, unless someone tells the provider the alarm exists. Providers can’t see a pendant from the exchange.

The same wall-socket problem applies to a small museum of other kit. Older burglar alarms that dial out through the phone line. Fax machines, for the three of you still faxing. Some lift emergency phones in blocks of flats. Older card terminals in small shops. Each has a digital replacement or workaround, but each needs someone to remember it’s plugged in. Modern kit sidesteps the issue by using your broadband or a SIM – a video doorbell never touched the phone line in the first place.

Five things people have got wrong about the landline switch off

“I’ll lose my number.” You won’t. The number moves across with you. The only way to lose it is to cancel voice service altogether, and even then most providers will hold it for a while if you ask.

“I need full fibre for this.” No. Digital Voice runs over whatever broadband you already have, including the copper-based kind. The fibre rollout and the phone switch-off are two separate programmes that happen to be running at the same time, which is most of the reason the letters are so confusing.

“No broadband means no phone.” Wrong, and this is the one that frightens the exact people it shouldn’t. Providers have to offer a voice-only service to customers who don’t want or can’t get broadband. BT’s version comes with a dedicated hub that does nothing but phone calls; the hybrid handset with the mobile fallback is the other route. You’ll have to ask for it by name, because the standard letter assumes you’re a broadband customer.

“My handset will need replacing.” Almost certainly not (see the table above). The exceptions are ancient pulse-dial phones and some very old answering machines. Everything sold this century is fine.

“This is the same as the 3G switch-off.” Different thing entirely. The 3G shutdowns by Vodafone, EE, Three and O2 were about mobile masts and mainly bit older handsets and some smart meters. This one is about the wires into your house. If you got a letter about 3G in 2024 or 2025 and dealt with it, you haven’t dealt with this.

The awkward question: do you need a landline at all?

Here’s my slightly unfashionable take: for a huge slice of the country, the kindest thing you can do for your landline is let it die. If everyone in your house owns a mobile and the only calls the home phone receives are from people pretending to be your bank, you’re paying monthly for a spam funnel. Nobody under 40 will ever answer it. The kids certainly won’t – half of them are reachable on a smartwatch on their wrist before they’re allowed a phone at all. When your provider writes to you about the digital switch, that letter is also an invitation to ask what the voice add-on is costing you and whether you’d miss it. Often it’s a fiver or more a month for a ringtone you dread. Put that against the monthly cost of a decent refurbished iPhone on a cheap SIM and the maths gets uncomfortable for the landline fast. And if you’re already in the mood to prune, the voice add-on belongs on the same list as the streaming subscriptions you meant to rotate and never did.

And yet the number itself can be worth keeping. A landline number is still the one thing that anchors you to a place – some GP surgeries and schools half-expect one, and for anyone with shaky mobile signal indoors it’s the reliable way of being reached. Digital lines also tend to sound better, ring on multiple handsets and block scam calls more effectively than the analogue line ever did. BT’s Digital Voice includes network-level scam call filtering that the copper network could never do.

So the honest advice splits: households full of smartphones should seriously consider dropping voice service and saving the money. Households where the landline is the lifeline should switch early, loudly and with every protection going.

What to sort this weekend

With the deadline now inside five months and the October price rise on the copper lines closer still, this is the weekend for the five-minute family audit. Ring your parents – on the landline, for the irony – and establish four things. Which provider are they with, and has it written to them yet? Does anyone in the house use a pendant alarm or fall detector? What’s the mobile signal like indoors? And where’s the router – because that’s where the phone will need to live, which sometimes means the handset moves rooms, and that alone can throw someone who’s had the phone on the same table since 1994.

If that call turns into a wider think about gifting technology to older relatives, our review of digital photo frames for grandparents covers what £47 to £249 actually buys, and the subscription catch hidden in some of the boxes.

If there’s a telecare alarm involved, call the provider and get the household flagged as needing supported migration. If there’s no broadband in the house at all, don’t panic – providers must offer a voice-only option, and in some cases a hybrid landline phone that falls back to the mobile network. Ask for it by name.

If it helps to have it on one screen, here’s the order I’d do it in:

1. Find out the provider and whether the migration letter has arrived. If it has, find out what date it gives.
2. Ask about pendant alarms, fall detectors and anything else that dials out on its own. Anything found goes on the provider’s record as a supported migration.
3. Check the mobile signal indoors, on the actual sofa they sit on, not by the front door.
4. Locate the router and decide whether the phone can live next to it. If not, that’s a cordless base and handsets, bought now, not in January.
5. Ask the provider what battery back-up they’re sending and how many hours it lasts.
6. Only then decide whether the voice service is worth keeping at all.

Then look around your own house, because smug switched-over households have blind spots too. The alarm box on the wall – when was that installed? While you’re in home-admin mode before the nights draw in, it’s a decent moment to look at what else in the house is quietly costing you money ahead of the October price cap.

The last time Britain did anything like this was the digital TV switchover, finished in 2012, and the lesson from that one holds: the technology was the easy bit, and the final 5% of people were the entire job. Fifteen years from now the analogue landline will be a pub-quiz answer, like the test card or dialling 1471 (which, pleasingly, still works on digital lines). The question worth asking this weekend isn’t whether the switch will go smoothly for you – it almost certainly will. It’s who in your life is still in that dwindling pool of analogue lines, and what they’d want you to have asked on their behalf.