The cheapest business phone line in the UK

Rated 5 stars by 271 business customers on Trustpilot.

Here is the short version, for anyone who just wants the answer: business line rental from UK Wholesale costs £13.99 a month, calls are up to 72% lower than standard rates, and calls to UK mobiles start from 8p a minute. If you find business line rental cheaper anywhere else, we'll beat the offer and give you a month free. The rest of this guide explains how that price is possible, how it compares with what you're probably paying now, and exactly how to switch — keeping your number, your phones and your wiring.

What a business phone line actually costs this year

Walk into the market as a small business in 2026 and you'll find business line rental from the major retailers typically priced at £25–£40+ a month — before you've made a single call. On top of that sits the call spend: per-minute charges, connection fees on some tariffs, and mobile rates that quietly do most of the damage on the average bill. Add the extras that tend to appear over time — feature charges, care levels, paper billing — and the true monthly cost of "a phone line" is usually well above the number in the advert.

That retail pricing typically costs twice as much or more than the wholesale equivalent. Not for a better line — for the same line. The copper or fibre into your premises is the same, the exchange is the same, and the engineer who turns up if it faults is the same. The difference is the margin stacked on top, which is the entire subject of the next section.

The gap matters more than it first looks, because line rental is a per-line, per-month, forever cost. Take the bottom of that typical retail range and the difference against £13.99 is over £11 a month — per line. A business running three or four lines is quietly spending three or four times that gap, every month, for as long as nobody checks. Unlike most costs a business can cut, this one asks nothing in return: no downgrade, no disruption, no behaviour change. The line is the same line. Only the margin changes.

If you're currently on BT lines, or with any of the big-name resellers, it is worth digging out a recent bill before you read on. Most businesses haven't looked at the line rental figure in years — it arrives, it gets paid, and it creeps. Our cheapest line rental page covers the headline offer in detail; this guide covers everything around it.

Same Openreach network, very different margins

Almost every business phone line in the UK — whoever sends the bill — runs over the Openreach network. Openreach maintains the cables, the exchanges and the engineers. Providers buy access to that network and sell it on to you. So when two providers quote you wildly different prices for "a business line", they are not quoting you different lines. They are quoting you different margins on the same line.

Retailers carry retail costs: advertising, high-street presence, big call centres, shareholder expectations. All of it has to come out of your line rental. UK Wholesale works the other way round — we've held a wholesale position since 2009 and supply at wholesale rates, without the retail layer. You pay what the big companies pay. No middleman margin hidden in your bill — that's the whole idea.

That's how business line rental lands at £13.99 a month — a saving of around 42% on typical retail pricing — and it's why we can make the promise plainly: find business line rental cheaper and we'll beat the offer and give you a month free. We've been doing this since 2005, from offices in Poole and Hyde, and the model hasn't needed to change in twenty-one years.

One thing wholesale pricing does not mean: worse service. When you call us you reach a UK-based expert who knows your account and can actually fix things — no ticket queues, no being passed around. The cheap price and the human service are the same proposition, not a trade-off.

What you pay vs what retailers charge

The line rental saving alone is around 42% on typical retail pricing — and because the line and the calls are discounted together, the saving compounds on every bill rather than showing up once. See business call charges for the full picture on calls, including calls to mobiles — the rate that decides most bills.

The £28.95 all-in bundle: line, broadband and calls

If you'd rather stop juggling suppliers altogether, the simplest option is the bundle: £28.95 a month all-in for your business phone line, FTTC business broadband and 500 minutes of calls. One provider, one bill, one number to ring if anything needs attention.

The appeal isn't only the price. When your line and your broadband come from different suppliers, any fault becomes a negotiation about whose fault it is — and you're the one stuck in the middle relaying messages. With everything on one account, you report it once and we own it until it's fixed.

• Everything on one bill. Line rental, FTTC broadband and 500 minutes of calls for £28.95 a month.
• One point of contact. No more being bounced between a line provider and a broadband provider when something breaks.
• Room to grow. Need more speed later? FTTP runs to 1Gbps — upgrade when the business demands it, not before.

You can compare the bundle against standalone options on our business broadband packages page, or browse the full business broadband range — from ADSL to FTTP and leased lines.

Which kind of line should you actually buy in 2026?

"Business phone line" now covers three genuinely different products, and the right answer depends on what your business plugs into it. Here's the honest read on each.

Analogue (traditional copper). The line your office has probably had for decades: a copper pair from the exchange, a dial tone, and equipment that just works — phones, alarms, card machines, lifts, fax. Industry-wide, this network is being retired: January 2027 is the deadline for the analogue switch off, and most providers are pushing customers onto VoIP well before then. UK Wholesale is the exception — uniquely, we can keep your analogue copper line running until 2030: same line, same number, same kit. If you have equipment that expects a real copper line, or you simply don't want a forced migration on someone else's timetable, read our copper switch off 2027 guide before anyone talks you into anything.

Digital phone lines. The line reinvented as software: calls carried over your broadband, managed from a portal, with the features that used to cost extra — ring groups, call routing, voicemail-to-email — built in. For most businesses this is where telephony ends up eventually, and done properly it's better than what it replaces. Our digital phone lines page covers how we manage the move for you. Larger or multi-line setups should look at SIP trunks, which keep your numbers and cut line costs further.

SoGEA. Broadband without line rental — a single connection at FTTC speeds with no phone line attached. If your business genuinely doesn't need a landline number (or runs its calls entirely over mobiles or a digital service), SoGEA removes the line rental from the equation altogether. It's the honest recommendation for a surprising number of small businesses, and we'll tell you if it's the honest recommendation for yours — even though it means selling you less. See the business broadband range for details.

The good news: you don't have to decide alone, and you don't have to decide today. A line at £13.99 a month buys you time to move to digital when it suits you — not when a deadline forces you.

Is the cheapest line actually the right line for you?

An honest guide should say this plainly: the cheapest business phone line is the right answer for most businesses, but not all of them. Here's how to tell which you are.

A £13.99 line suits you if you have a number your customers know, equipment that plugs into a wall socket, and no appetite for change for change's sake. Shops, trades, surgeries, offices with a phone on the desk that simply needs to ring — the classic case. You want the same setup for less money, and that is exactly what switching delivers. Every line type is covered, from a single line to multi-line, ISDN2 and ISDN30 — our line types page compares them — and the everyday line features are all available: call waiting, diversion, 1571 and the rest. If the phone is genuinely critical to trading, priority business care is worth a look on top.

Look past the bare line if your team is spread across sites or homes, you're outgrowing a single number, or your phone system is due for replacement anyway — in which case digital or SIP will likely serve you better for similar money. And if the honest truth is that nobody rings your landline any more, say so: SoGEA drops the line rental entirely, and we'd rather point you there than sell you a line you don't need.

Starting from scratch? If your business needs a brand-new line rather than a switch, that's covered too — see our new phone line offer, then everything else in this guide applies from day one.

How to switch business phone line provider — and keep your number

Switching provider sounds like an office upheaval. It isn't. Nothing physical changes — no engineer visit, no downtime, no new hardware. Your number stays the same, your phones stay the same, and the only thing that changes is who bills you. Here's the whole process:

1. Dig out a recent bill. You need three things: your line rental figure, your typical call spend, and your contract end date if you're in one. That's your baseline — most businesses are surprised by it.
2. Get a wholesale quote. Tell us how many lines you have, who supplies them now, and roughly what you spend. We'll come back with the wholesale price and an honest read on whether switching stacks up. No obligation, no hard sell.
3. Say yes — then do nothing. We handle the transfer with your current provider. It's an administrative change on the Openreach network, not a physical one; your line keeps working throughout.
4. Keep everything. Your number ports with you automatically as part of the transfer. Your phones, wiring and any equipment on the line carry on exactly as before. If you're on BT lines today, the move is routine — it's the transfer we do most.
5. Check the next bill. The switch shows up in one place only: the amount at the bottom. Line rental at £13.99, calls up to 72% lower, mobiles from 8p a minute.

If you're mid-contract elsewhere, still get the quote — knowing the wholesale number tells you exactly what staying put is costing you, and we'll diarise your end date so the switch is ready the day you're free.

Eight questions to ask any provider — including us

Whoever you're talking to, these questions separate a good deal from a glossy one. We've included our answers, because a guide that says "ask questions" and then dodges them isn't much of a guide.

• "What's the price after the introductory period?" Many retail deals are built around a low first year and a much higher second. Ours is £13.99 a month — it isn't a teaser rate.
• "Is the line on the Openreach network?" If yes, you're comparing margins, not quality. Ours is — same lines, same engineers as the big retailers.
• "What happens to my line at the January 2027 switch off?" Most providers will move you to VoIP on their schedule. We can keep your copper line running until 2030, and you move when it suits you.
• "What will calls to mobiles cost me?" It's the rate that decides most business bills, and it's the one the headline price never mentions. Ours start from 8p a minute.
• "Do I keep my number if I ever leave you?" Your number belongs with your business. Porting in and porting out should both be routine — with us, they are.
• "Who answers when something breaks?" Ask whether you'll reach a person who knows your account or a ticket queue. We're UK-based, and you can test us on 0161 850 1288 before you sign anything.
• "Are features included or extra?" Call diversion, 1571, call waiting — find out what's in the price and what appears on the bill later.
• "Will you beat a cheaper quote?" We will — find business line rental cheaper and we'll beat the offer and give you a month free. Any provider confident in its pricing should be able to say something similar.

Red flags on a business telecoms bill

Before you compare new quotes, it pays to understand the bill you already have. These are the patterns we see most when businesses send us theirs — none of them are illegal, all of them are expensive:

• Line rental that has quietly grown. The figure you agreed years ago is rarely the figure you're paying now. Annual increases compound, and nobody sends a card.
• An expired discount. The introductory rate ended, the price stepped up, and the bill never announced it. Check the date on your original deal.
• Care levels and add-ons you didn't choose. Enhanced care, maintenance cover and feature packs have a habit of appearing on renewal. Some are worth having — but only if you chose them.
• Call set-up fees. A per-call connection charge on top of the per-minute rate makes short calls disproportionately expensive — and most business calls are short.
• Mobile rates doing the real damage. The line rental gets the attention; the calls-to-mobiles rate takes the money. It's usually the single best number to compare between providers.
• Paper billing and payment-method fees. Small lines, but they're pure margin — and a provider that charges them tends to charge everywhere else it can.
• Auto-renewal into a fresh term. Miss a window and you're locked in for another year at whatever the new rate is. Diarise your end date — or tell us and we'll diarise it for you.

None of this requires an accountant to fix. Send us a recent bill with your quote request and we'll tell you, line by line, what you'd pay at wholesale — and if something on your current bill is actually a fair deal, we'll say that too.

Line rental jargon, in plain English

Line rental. The fixed monthly charge for having a phone line at all, before any calls. This is the £13.99.

Openreach. The company that owns and maintains the UK's phone and broadband network — the cables, exchanges and engineers. Nearly every provider, including the big retailers and us, delivers over it.

PSTN. The Public Switched Telephone Network — the traditional analogue phone network, being switched off industry-wide in January 2027.

Analogue line. A traditional copper phone line carrying a dial tone. What most offices have had for decades, and what we can keep running until 2030.

VoIP. Voice over IP — calls carried over the internet instead of a dedicated phone line. The technology behind digital phone lines.

SIP trunk. The business-grade version of VoIP: virtual lines delivered over your internet connection to a phone system, keeping your existing numbers. See SIP trunks.

FTTC. Fibre to the cabinet — fibre runs to the green cabinet in your street, copper covers the last stretch. The broadband in our £28.95 bundle.

FTTP. Fibre to the premises — fibre all the way into your building, with speeds up to 1Gbps.

SoGEA. Broadband without a phone line attached — FTTC speeds, no line rental. For businesses that don't need a landline.

Number porting. Moving your existing phone number between providers. Routine, free of drama, and the reason switching doesn't mean reprinting your stationery.

ISDN2 / ISDN30. Digital multi-line services used by older phone systems — two channels and up to thirty channels respectively. Being retired along with the analogue network; SIP is the usual successor.

Hunt group. One number ringing several phones in turn (or together) until someone answers. A standard feature of multi-line and digital setups.

Call diversion. Sending incoming calls to another number — a mobile, another site, an answering service. The feature that keeps you reachable when a line goes down.

1571. The network's built-in voicemail service — messages held on the line itself, no answering machine required.

Still weighing it up? We're rated 5 stars by 271 business customers on Trustpilot — businesses that made exactly this switch and stayed.