How To Get a Business Phone Number in the UK: 2026 Guide

Q: Which is better for mobile callers: 0330 or 0800 numbers?

For most UK small businesses, 0330 numbers are the superior choice for mobile accessibility . While 0800 numbers are “freephone”, they can be expensive for you (the business owner) to host, as you pay for every incoming second. 0330 numbers: These are charged at standard geographic rates (the same as 01 or 02 landlines). Crucially, they are included in mobile minute bundles. For the vast majority of mobile users, calling a 0330 number costs absolutely nothing. 0800 numbers: These are also free from mobiles (regulated by Ofcom since 2015), but businesses often face higher origination fees to receive these calls. So, if you want to appear national without the high overhead of freephone, 0330 provides the best balance. It presents as local to the caller, while giving your business a national presence.

To get a business phone number in the UK in 2026, choose a VoIP provider, select a local (01/02), national (03) or freephone (0800) number, and install the provider’s app on your phones and computers to start making and receiving calls immediately.

This is no longer an optional future upgrade, either. New PSTN landlines can’t be ordered because the UK’s analogue network is scheduled to switch off on 31 January 2027. If you want a new business number (or you want to keep your existing one alive past the deadline), VoIP is the default route.

Fast to deploy: You can usually get a number live the same day, then add users as needed.
More professional than a mobile-only setup: Even cheap VoIP plans can support greetings, routing and basic call handling.
Built for hybrid work: One business identity across mobile and desktop, without staff exposing personal numbers.

Cost-wise, our latest review of the cheapest UK VoIP plans found entry-level business packages starting from an affordable £6.95 per user, per month. Albeit, there are various add-ons and plan limits around calling minutes, call features such as recording, and freephone inbound charges to consider, too.

Choose the number type: Local (01/02), national (03), freephone (0800), mobile-style (07) or international, based on how customers contact you.
Pick a VoIP provider: Prioritise UK number availability, call handling features (routing/queues), support hours and any limits on users, numbers, or inclusive minutes, within your budget.
Select or port your number: Choose an available number, or port your existing landline/mobile number to VoIP so customers keep calling the same line.
Set up call handling: Add users and extensions, set business hours/holidays, record greetings and voicemail, configure an auto-attendant or ring group, then install the VoIP app on mobiles and desktops (and connect any desk phones if needed).

How To Get a Business Phone Number: Expert’s Summary

An 0800 number tells your customers that you value their call enough to pay for it. While this is great for customer service, costs can be volatile.

0800 numbers charge you for every incoming minute. If you run a successful ad campaign and your phone starts ringing off the hook, you could be looking at an unexpected bill of hundreds of pounds.

Before you commit, ask the provider what the per-minute inbound rate is (typically £0.03–£0.07) and multiply by your expected call volume. If you’re advertising on TV or running a large PPC campaign, those costs can escalate fast.

For most SMEs, a 0330 number is a smarter choice. These cost the caller the same as a local call (and are included in most mobile bundles), but they don’t charge you for the incoming time.

It gives you a professional, national image without the open-ended financial risk of a traditional freephone line.

Richard Sutherland Info-tech lecturer and experienced call centre manager

Find out more about our Expert author

What Is a Business Phone Number?

A business phone number is a dedicated number your customers can call that’s separate from personal mobile numbers and can be shared across a team with extensions, call routing and voicemail.

In the UK in 2026, a business phone number usually means a VoIP number (Voice over Internet Protocol) where your calls run over a broadband connection and a provider app, not copper landlines.

With Openreach’s national stop-sell already in effect and the PSTN/ISDN retirement date set for 31 January 2027, choosing VoIP is now the default route for new setups and upgrades.

What you can do with a VoIP business number

Answer calls on any device: Desktop app, mobile app or compatible desk phones.
Run one main number with a team behind it: Extensions, ring groups, hunt groups and call queues.
Route calls to various departments: Business hours, holiday schedules, auto-attendants and overflow rules.
Keep your number if you switch providers: You can usually port (transfer) it across.

Fixed vs non-fixed business numbers

Geographic numbers (e.g. 020, 0161): A local area code for trust and higher answer rates. With VoIP, you can usually buy these area codes even if you don’t physically operate in that area.
Non-geographic numbers: A national presence (0330) or “free to call” (0800) number. 0330 often gives you predictable inbound behaviour for callers, without potential premium number fees.
Mobile-style numbers (07xxx): Popular for trades and owner-operators who want to look reachable, while still separating work from personal life.

Landline systems in the UK use fixed, wired connections through the PSTN network, while VoIP systems deliver calls over the internet, offering greater flexibility, mobility and cost savings. Source: Expert Market

How To Get a Business Phone Number

To get a business phone number in the UK, choose a VoIP provider, select a number type (local, 0330, 0800, etc.), then set up routing and extensions so calls reach the right person straight away. If you’re taking a brand-new number, you can often be live the same day; if you’re keeping an existing number, plan for a porting window.

How do I decide which business phone number type I need?

Local (01/02): Best for local trust (e.g. builders, clinics, studios, local services).
0330: Best for a “national” look without premium-rate optics; common for customer service lines.
0800: Best when “free to call” is part of your brand promise, although inbound costs can rise fast at high volume.
International: Best if you sell into specific countries and want customers to call a familiar local code.
07xxx (mobile-style): Best if your customers expect to ring a mobile number, but you still want a work-only line.

How to choose a UK VoIP phone provider

Pick based on how your business actually handles calls. Plans can vary wildly: some are effectively a single-number setup, while others support multi-user call flows with advanced features (queues, IVR, schedules, reporting and more).

If you need one main number with proper routing: Prioritise auto-attendants, queues/ring groups, schedules, and voicemail handling.
If you need a number per user: Confirm whether the plan includes direct dial numbers for each user (or charges extra).
If you’ll grow: Look for upgrade headroom, such as integration options, analytics, call recording and admin controls on higher tiers.
If you rely on support: Check support hours and channels (weekend coverage matters for many SMEs).

What internet speed is required for a VoIP business phone number?

A standard VoIP call needs roughly 100kbps of bandwidth per active call (up and down), and you’ll want that to be the average, stable figure rather than an uncommon peak speed. If your connection suffers from jitter or packet loss, call quality will drop even if you have fast broadband on paper.

Rule of thumb: Budget ~100kbps per concurrent call, with breathing room for other work traffic (video, cloud tools, uploads).
Practical fix: Use a wired connection where possible and enable router QoS (Quality of Service) to prioritise voice traffic.

How to search for and select an available business number

New number: Choose an area code (or 0330/0800) and pick from the available numbers your provider offers.
Keep your current number: Port it to the new provider so customers don’t have to learn a new number.

How long does it take to port an existing number? In most UK cases, porting a landline number to VoIP typically takes around 10 to 14 days once paperwork is correct and the port is submitted. Keep your old service active until the port completes to avoid downtime.

Setting up your VoIP system

Setting up a VoIP system is mainly about making sure callers reach the right person quickly. That entails assigning users and extensions, recording a professional greeting, and configuring routing rules for business hours and overflow.

Create users and extensions: So one office number can serve a whole team.
Build a call flow: Auto-attendant (menu or “say what you need” type functionality), ring groups/queues and out-of-hours rules.
Set voicemail rules: Voicemail-to-email, notifications and who receives missed-call alerts.
Install apps: Desktop and mobile softphone apps so staff can answer anywhere.

Can I use my existing hardware with a new business number?

Yes, but it depends on what you already own. If you have traditional analogue desk phones or cordless handsets, you can often keep them by using an ATA (Analogue Telephone Adapter), which converts VoIP into a signal your old handset understands.

If you want the simplest setup (and the best feature support), use IP-compatible desk phones that connect directly to your network and VoIP provider.

Keep old phones: Add an ATA (best for cost-saving, but feature support can be more limited).
Upgrade to IP phones: Best if you need queue status lights, line keys, hot-desking or more reliable provisioning.
Go softphone-first: Many SMEs now skip desk phones entirely and run calls through desktop/mobile apps.

▶ Read more: Guide to Business Number Porting

Types of VoIP Business Phone Numbers

UK businesses typically choose between a local area-code number (for trust), a 03 national number (for a professional, nationwide presence) or an 0800 freephone number (for maximum accessibility, with higher ongoing costs for the business).

Number type	What it is	Best for	What to know in 2026
Local (01/02)	A UK geographic number (e.g. 020, 0161) tied to an area code	Local services, clinics, trades, studios, and any business that wins on local credibility	You can run a local identity even with a remote team, because VoIP routing isn’t tied to one building. Local numbers also help you look “real” in an era of spammy, AI-voice cold calls
03 national (e.g. 0330)	UK-wide, non-location-specific numbers charged at standard rates	Businesses that want a national brand without premium-rate baggage	03 numbers are designed to be treated like standard calls (and are commonly included in call bundles), so they’re usually more predictable than freephone for ongoing costs
Freephone (0800/0808)	Free for the caller to ring	Customer service lines, high-trust brands and inbound-heavy campaigns	“Free to call” doesn’t mean free to run: you normally pay inbound charges as the business, so costs can spike if your marketing works too well or your call queues run long
International	A number with a non-UK country code (e.g. US, Germany)	Exporters, agencies, and UK firms selling into other countries	International numbers are now a normal “local presence” tool, which is useful if you want prospects abroad to call a familiar format without setting up an overseas office
Vanity number	A memorable number pattern (e.g. repeating digits) on a UK prefix	Branding-led businesses that want recall from ads, vans and signage	Your provider may charge more (and you may wait longer) if you want a very specific pattern or it may not be available. Rarely used in the UK
Mobile-style business number (07xxx)	A mobile-format number used as your business identity (often delivered via VoIP/softphone)	Sole traders and trades that want to look highly reachable and “human”	This can be a strong trust signal for some sectors, but it can also attract more spam, so prioritise spam blocking, time-of-day rules and strong call screening

4 Reasons To Get a Business Phone Number

In Expert Market’s view, a business number is an essential item for a UK business. Here are four reasons why now is the time to switch to a VoIP business number in 2026:

Stay operational ahead of the PSTN switch-off: If you’re still relying on legacy landline services, you’re working against the clock. Moving to VoIP now avoids a late-2026 rush where number porting and installs can become stressful, slow and expensive.
Stop losing leads when you can’t pick up: A proper business number can help with call handling: auto-attendants, call queues, ring groups, business hours, holiday routing and voicemail rules all stop missed calls from turning into missed invoices.
Separate the business from the person: You protect your privacy, onboard staff faster and avoid the nightmare scenario where customers keep calling an ex-employee’s mobile. The number stays with the business, not whoever happens to answer today.
Turn calls into data (and admin savings), not just conversations: Modern VoIP systems can log calls, tag outcomes, and push notes into your wider digital operations via integrations for CRM, Workspaces by Google and Microsoft, and other applications. The best platforms also add AI layers that summarise calls and help you act faster (for example: a written recap, next steps or a follow-up draft).

How To Get a Free Business Phone Number

With business phone numbers, “free” usually means one of three things: a free trial, a free account with strict limits or a freephone number (which is free for callers, but not free for your business to run).

Use a free trial to test a proper business setup: This is the cleanest “free” option: you can test call quality, routing and apps without committing.
Be wary of free plans with expensive usage: The catch is often per-minute outbound rates, paid add-ons (recording, integrations) or restrictions that make the system feel like a toy once you’re handling real customer volume.
Don’t confuse freephone with free: 0800/0808 numbers remove friction for callers, but you normally pay for inbound usage, which makes budgeting harder if call volumes surge.

For most SMEs, a low-cost paid plan beats a “free” number long-term: you get predictable features, better support, and fewer surprise charges once you start relying on the line day-to-day (i.e. you’ll often get unlimited calling minutes included in a monthly fee, rather than have to pay a variable per-minute rate, depending on phone type or location, later).

▶ Read more: What Is Wi-Fi Calling?

How to Choose The Right UK Business Number? Next Steps

A business phone number can help you connect with customers and maintain your company’s professionalism as it grows. You can make and receive calls from your dedicated business number, route calls to employees, and benefit from features like call recording and voicemail transcription.

It’s easy and inexpensive to get a VoIP business phone number. We suggest:

Picking the number type based on trust and cost control: Local (01/02) for credibility, 03 for national presence and 0800 for accessibility (with higher business-side running costs).
Matching your provider to your company’s calling history: Inbound-heavy teams need queues and routing; outbound-heavy teams need strong minute allowances and dialling controls.
Decide whether you need one main number or numbers per user: Some entry plans work best as one main line plus extensions, while others give each user a direct dial number.
Make internet quality a hard requirement: Stable connection first, with raw speed a secondary consideration.
Plan number porting early: Keep your old service live until porting completes so you don’t risk downtime.
Keep hardware costs down: Softphones on mobiles or laptops work for many SMEs. Only buy desk phones if you truly need them.

Once you’ve decided on a top VoIP provider, you can finish setting up your phone system in just a few hours.

For more help with getting started, check out our guide to transitioning your workforce to VoIP phones.

Frequently Asked Questions

Can I keep my business phone number if I change providers?

Yes, you can keep your business phone number if you decide to change providers. Contact your new provider to authorise them to port your number from your old provider. However, don’t cancel your existing service until your number has been ported.

Which is better for mobile callers: 0330 or 0800 numbers?

For most UK small businesses, 0330 numbers are the superior choice for mobile accessibility. While 0800 numbers are “freephone”, they can be expensive for you (the business owner) to host, as you pay for every incoming second.

0330 numbers: These are charged at standard geographic rates (the same as 01 or 02 landlines). Crucially, they are included in mobile minute bundles. For the vast majority of mobile users, calling a 0330 number costs absolutely nothing.
0800 numbers: These are also free from mobiles (regulated by Ofcom since 2015), but businesses often face higher origination fees to receive these calls.

So, if you want to appear national without the high overhead of freephone, 0330 provides the best balance. It presents as local to the caller, while giving your business a national presence.

Can I get multiple business phone numbers?

Yes, you can get multiple phone numbers for your business. Having multiple numbers can help cater to different markets around the world. For example, with non-fixed VoIP, you could have a UK phone number for UK clients and a US phone number for customers in the US.

Meet our Expert author

Richard Sutherland

Richard Sutherland is a versatile professional with extensive experience in technology and management. He has served as a call centre manager for Samsung, led frontline teams and ensured efficient operations. Richard’s perspective and experience make him an excellent resource for owners and managers looking for products and services to improve their small business’ operations.

How To Get a Business Phone Number in 2026?