Get more calls with a memorable phone number, or cut your phone bill with a £149/month Membership.
Browse 11.6k+ memorable 0800, 020, 03 and local numbers from ranges Ofcom allocated directly to us — yours outright from a one-off £125.
Or join the Membership at £149/month. Unlimited numbers, SIP trunks, phones, hosted PBX — and calls at the wholesale rates we pay: 0.3p/min landline, 0.6p/min mobile.
We make a profit on your membership, not on your calls.
Featured memorable numbers
Premium numbers priced by memorability. Buy once, own forever.
Access to the UK wholesale telecom industry. For SMEs. £149/month.
Cut out the middlemen, resellers, and markups. Get direct access to the regulated telecoms market — the same supply chain, same rates, and same suppliers the big names use to serve their customers.
Already with another provider? Bring everything over — numbers, hardware, SIP trunks. You pay £149/month and your calls run at the wholesale rates we pay BT, passed straight through — we profit on the membership, not your calls. Start the transfer →
Why trust us with your phones
Since 2010 we've handled 4.3 billion calls. Our infrastructure has carried mission-critical phone lines for FTSE-listed retailers, global news agencies, government bodies, embassies, telecom resellers and 400-seat contact centres. The same infrastructure now opens to SMEs.
The team behind your phones
Members stay with us for an average of 10.5 years— not by accident. The people who answer your call are the same people who set up your account, transfer your numbers, and built this network. Decades of telecoms and contact-centre experience between them. No outsourced helpdesk, no scripts, no “let me transfer you to retention.” Talk to a real engineer the moment you pick up the phone.
30-day no-questions refund. Pay by card now, Direct Debit takes over after onboarding.
No contract. No notice period. No setup fee. Up to 25 phone lines included.
What Membership gets you
- ✓NumbersUnlimited UK 01/02/03/0800/0808, any area code
- ✓Transfer numbers inFree — we absorb the £2.49–£116 wholesale transfer fee
- ✓SIP trunksAny channels, any volume, no per-channel fee
- ✓CallsWholesale rates, pass-through (0.3p/min landline · 0.6p/min mobile)
- ✓SoftphonesMobile + desktop, ~75p per active install, no seat licences
- ✓HandsetsGrandstream IP phones at distributor invoice price
- ✓FeaturesVoicemail, IVR, call recording, routing — all included
- ✓SupportUK business hours + emergency out-of-hours for anything critical
- ✓UpgradesEvery new NumberGroup feature we ship, included forever
What we're upfront about
- ·£149/month is the only price — no annual discount, no tiered plans. Membership scales to 25 concurrent calls; bigger needs get a chat first to size the relationship properly.
- ·Paid by Direct Debit (first month via Stripe, then DD takes over)
- ·Handsets are Grandstream only — buy elsewhere if you want Yealink, Cisco, etc.
- ·Expensive call destinations blocked by default — we protect Members from bill shock
- ·Security deposit may be required depending on company status, accounts, or expected call volume
- ·Per-active-install softphone billing — no named-user seat licences
- ·Transferring out of NumberGroup-allocated numbers: £125 admin fee. Numbers you brought in transfer out free.
- ·If you stop being a Member, NumberGroup-allocated numbers return to us. Numbers you brought in stay yours.
Slide the sliders. See what you’d save.
You pay £149 a month and your calls at the wholesale rate we pay — no per-call markup. The more you call, the more you save, because we never take a cut.
On your numbers, you’d pay £153 a month on Membership instead of about £220 on a typical UK VoIP provider — saving roughly £67 a month (about £799 a year, 30% cheaper).
With one number per line, the typical £15 seat, £5 number rental and £8 feature licence total £28 per line. Membership becomes cheaper at 6 lines before call charges. Fewer numbers or cheaper plans move that crossover higher; calls are extra on Membership.
| Lines | Typical per-seat provider | Membership | Cheaper option |
|---|---|---|---|
| 1 | £28 | £149 | Per-seat providers win |
| 4 | £112 | £149 | Per-seat providers win |
| 5 | £140 | £149 | Per-seat providers win |
| 6 | £168 | £149 | Membership |
| 10 | £280 | £149 | Membership |
Estimate only. Retail figures use the published median across bOnline (£9.95–£15.50/user), Voipfone (£20), Vonage UK (£15), Yay (£15), Nimvelo (£15), CircleLoop (£15) and Sipgate (£12.95) and RingCentral (£19.99 Standard), Dialpad (£12), BT (£15, rising £1 every April) and Virgin Media Business (£27.50/line); larger players like Gamma sell through resellers on a quote basis, so there’s no public per-seat price to show. Plus £8/number for recording/IVR/voicemail add-ons (typical UK SME pricing — Voipfone £5–£8/number, SwitchboardFREE £14.96, Callagenix £34.20; feature licences attach to the number not the user), £5/number rental (number-only providers can look cheaper on the bare number, but watch the ramp-up — Telecoms World's headline 99p 0800 number is 99p for the first month then £9.99/month thereafter, a tenfold jump; TTNC £2.53 — but that’s one basic number, with call recording, IVR, voicemail, queuing and hunt groups all charged as separate bolt-ons that Membership includes), £10/SIP channel. Most rivals bundle an “unlimited” fair-use call allowance at this tier — we model that as 2,000 mins/line/mo combined UK landline + mobile, with overage at 5p/min landline and 12p/min mobile. Membership uses our published wholesale rates — 0.3138p/min landline, 0.6353p/min mobile — passed straight through. VAT excluded throughout. Competitor prices are their published list prices as of June 2026 and may have changed since — follow the links to check. Real bills depend on provider, contract length and features picked.
Since 2010, we've carried the calls for some of Britain's best-known organisations
Real reviews from real customers.
“I've been using Numbergroup for over 10 years now and have never had an issue. Every time I need support (which isn't often) they answer my calls and deal with it in a prompt and professional manner.”
“I have been with Numbergroup well over ten years with zero issues. Diane and Sham are lovely and incredibly helpful.”
“Been with Numbergroup over 10 years. Their prices always remain competitive, the customer support is quick and efficient and never had any service interruptions. Would definitely recommend.”
“We don't deal with Numbergroup directly, but one of our providers does. We had a problem with our provider during a critical situation — Numbergroup's response was unbelievably fast and very professional. They immediately put on number forwards so critical businesses could continue to receive calls. On a par with the best response I've received in 40+ years in IT.”
“NumberGroup have provided our company with reliable no-fuss service for over a decade. They do what they say on the tin. Their team are nice folks — friendly and helpful.”
“I cannot express enough my gratitude for the exceptional service provided by Diane at Number Group. As our main point of contact for over 7 years, Diane has consistently delivered uninterrupted, top-tier support. If you are in search of a reliable phone service, I wholeheartedly recommend Number Group.”
“We have used this number service for five years and NEVER had a problem. Very helpful. Would highly recommend.”
“I have used three other companies before — not one of them compare to Numbergroup. So professional and polite, speedy with getting things done. Especially Diane who looks after my account.”
“Any time I have called over the last 5–6 years I have had friendly and helpful people who are keen to resolve any queries I have. Recently added a 2nd business number and they made the entire process so quick and easy. Allowed me to run my independent business stress-free.”
“What a breath of fresh air Numbergroup are. I transferred to them from my previous provider in 2022. I have been blown away by their service, professionalism, friendliness and top-notch customer service ever since.”
“I've been using Numbergroup as a SIP provider for several years now and the quality of service, uptime, support and assistance/advice has been outstanding throughout that period. Would highly recommend.”
“I spoke with Diane late on Friday afternoon. I needed help on an existing number and to set up a new number. Diane was so very helpful and was able to answer all of the questions I had. Excellent service, phone answered promptly and nothing was any trouble.”
“Excellent friendly customer support experience. Non-pushy and very supportive and understanding. Response time to my enquiry was really good.”
“Always prompt with any requests. Been a customer for over 10 years with no issues at all. Would definitely recommend.”
“I have been a client of Numbergroup for many years. The customer service has always been excellent and the phone line provided has never had any issues. Highly recommended.”
“Very happy with the services we have got from Number Group. I've used Numbergroup for a number of years. Big thank you to Diane and Sham — so helpful with my account. I'd highly recommend Numbergroup for quality and delivery of a cost-effective service.”
“Diane has such knowledge and was so helpful with my account. An absolute gem at the Number Group. She is just the sort of person you need on the end of a phone to help with customer support.”
“We've been using NumberGroup's cloud-hosted communication platform since 2016. Reliable, easy to use, extremely competitive call rates, friendly customer service and faultless support. One key benefit has been the significant savings on outgoing call charges — our transition saved our business over £800 a year.”
“I will strongly recommend NumberGroup. This company has been providing us at FisherWright Solicitors with our telephone system since 2016 and it is a real pleasure to deal with them. Sham is our point of contact and he is very kind and helpful. We're a small company and we still get the best service and attention. Truly outstanding!”
“I run a taxi business. Number Group gave me the opportunity to select my choice of geographical and 0800 numbers for my business, which makes my brand look great. Very happy with the services and the team.”
“These guys are awesome. I needed a stable, clear telephone line for my business and after a lot of research I chose NumberGroup. Sham and the team could not do more to make sure I was satisfied. My 0800 and local numbers feed a receptionist service with a professionally recorded greeting — highly professional image. I've ordered two more numbers since.”
“I've been a customer of NumberGroup since 2010 and have been very happy with their service to date. They deal with support inquiries very quickly, and the quality of their telecom service is very high.”
“Amazing company. I have been with them for over 10 years and can't recommend them enough. Sham and the team are amazing and have helped us in so many technical and business ways over the years.”
“I have been a customer of Numbergroup since 2012. Numbergroup supplies around 50 telephone numbers for us, including international numbers, and we also use them on our PBX calls. Would recommend — very reliable through the years and have never let me down.”
“We have been using Numbergroup for over five years and they have been consistently responsive and great to deal with. They know their stuff and go above and beyond when assisting with often complex requirements.”
“Just want to say a massive thank you to Sham who's spent endless hours on the phone talking me through the steps and helped me organise the company I work for much more efficiently. Brilliant company to work with, well priced and top class friendly customer service — would recommend in a heartbeat.”
“Diane is our point of contact — she is always so pleasant and professional. It's good to have that from staff. Even paying an invoice is a pleasure.”
“Fantastic, speedy customer service and super friendly. I'd highly recommend Numbergroup for quality and delivery of a cost-effective service. Had our 0800 number for 3 years now and had no problems at all. The call rates are miles cheaper than BT and the savings we've made as a small business are hugely noticeable.”
“Best VoIP in the UK. We've been with Number Group for 5–6 years now if not longer. We're just upgrading to the new PBX system and I can't find many VoIP providers out there that can beat 5,000 incoming and outgoing calls to landline and mobile for the price.”
“I've used Numbergroup for a number of years now to manage an 0800 number for my website. They provided me with a memorable number, excellent customer service from day one and I've never had any technical issues. A great company, great support and real value for money.”
“Awesome service from this company. We have a few 0800 numbers and the service is faultless. Top marks.”
“Great company, been with them for nine years now — all good. Recommended.”
“Out of all the companies we looked at, NumberGroup offered exceptional value for money with an honest approach to pricing core technologies such as SIP trunks. They charge for service provision and calls, but don't charge stupid amounts of cash for SIP trunking or the ability to handle more than one call concurrently. The service has been of a consistently high quality and problem-free. It just works.”
“I've been using Numbergroup for over 10 years now and have never had an issue. Every time I need support (which isn't often) they answer my calls and deal with it in a prompt and professional manner.”
“I have been with Numbergroup well over ten years with zero issues. Diane and Sham are lovely and incredibly helpful.”
“Been with Numbergroup over 10 years. Their prices always remain competitive, the customer support is quick and efficient and never had any service interruptions. Would definitely recommend.”
“We don't deal with Numbergroup directly, but one of our providers does. We had a problem with our provider during a critical situation — Numbergroup's response was unbelievably fast and very professional. They immediately put on number forwards so critical businesses could continue to receive calls. On a par with the best response I've received in 40+ years in IT.”
“NumberGroup have provided our company with reliable no-fuss service for over a decade. They do what they say on the tin. Their team are nice folks — friendly and helpful.”
“I cannot express enough my gratitude for the exceptional service provided by Diane at Number Group. As our main point of contact for over 7 years, Diane has consistently delivered uninterrupted, top-tier support. If you are in search of a reliable phone service, I wholeheartedly recommend Number Group.”
“We have used this number service for five years and NEVER had a problem. Very helpful. Would highly recommend.”
“I have used three other companies before — not one of them compare to Numbergroup. So professional and polite, speedy with getting things done. Especially Diane who looks after my account.”
“Any time I have called over the last 5–6 years I have had friendly and helpful people who are keen to resolve any queries I have. Recently added a 2nd business number and they made the entire process so quick and easy. Allowed me to run my independent business stress-free.”
“What a breath of fresh air Numbergroup are. I transferred to them from my previous provider in 2022. I have been blown away by their service, professionalism, friendliness and top-notch customer service ever since.”
“I've been using Numbergroup as a SIP provider for several years now and the quality of service, uptime, support and assistance/advice has been outstanding throughout that period. Would highly recommend.”
“I spoke with Diane late on Friday afternoon. I needed help on an existing number and to set up a new number. Diane was so very helpful and was able to answer all of the questions I had. Excellent service, phone answered promptly and nothing was any trouble.”
“Excellent friendly customer support experience. Non-pushy and very supportive and understanding. Response time to my enquiry was really good.”
“Always prompt with any requests. Been a customer for over 10 years with no issues at all. Would definitely recommend.”
“I have been a client of Numbergroup for many years. The customer service has always been excellent and the phone line provided has never had any issues. Highly recommended.”
“Very happy with the services we have got from Number Group. I've used Numbergroup for a number of years. Big thank you to Diane and Sham — so helpful with my account. I'd highly recommend Numbergroup for quality and delivery of a cost-effective service.”
“Diane has such knowledge and was so helpful with my account. An absolute gem at the Number Group. She is just the sort of person you need on the end of a phone to help with customer support.”
“We've been using NumberGroup's cloud-hosted communication platform since 2016. Reliable, easy to use, extremely competitive call rates, friendly customer service and faultless support. One key benefit has been the significant savings on outgoing call charges — our transition saved our business over £800 a year.”
“I will strongly recommend NumberGroup. This company has been providing us at FisherWright Solicitors with our telephone system since 2016 and it is a real pleasure to deal with them. Sham is our point of contact and he is very kind and helpful. We're a small company and we still get the best service and attention. Truly outstanding!”
“I run a taxi business. Number Group gave me the opportunity to select my choice of geographical and 0800 numbers for my business, which makes my brand look great. Very happy with the services and the team.”
“These guys are awesome. I needed a stable, clear telephone line for my business and after a lot of research I chose NumberGroup. Sham and the team could not do more to make sure I was satisfied. My 0800 and local numbers feed a receptionist service with a professionally recorded greeting — highly professional image. I've ordered two more numbers since.”
“I've been a customer of NumberGroup since 2010 and have been very happy with their service to date. They deal with support inquiries very quickly, and the quality of their telecom service is very high.”
“Amazing company. I have been with them for over 10 years and can't recommend them enough. Sham and the team are amazing and have helped us in so many technical and business ways over the years.”
“I have been a customer of Numbergroup since 2012. Numbergroup supplies around 50 telephone numbers for us, including international numbers, and we also use them on our PBX calls. Would recommend — very reliable through the years and have never let me down.”
“We have been using Numbergroup for over five years and they have been consistently responsive and great to deal with. They know their stuff and go above and beyond when assisting with often complex requirements.”
“Just want to say a massive thank you to Sham who's spent endless hours on the phone talking me through the steps and helped me organise the company I work for much more efficiently. Brilliant company to work with, well priced and top class friendly customer service — would recommend in a heartbeat.”
“Diane is our point of contact — she is always so pleasant and professional. It's good to have that from staff. Even paying an invoice is a pleasure.”
“Fantastic, speedy customer service and super friendly. I'd highly recommend Numbergroup for quality and delivery of a cost-effective service. Had our 0800 number for 3 years now and had no problems at all. The call rates are miles cheaper than BT and the savings we've made as a small business are hugely noticeable.”
“Best VoIP in the UK. We've been with Number Group for 5–6 years now if not longer. We're just upgrading to the new PBX system and I can't find many VoIP providers out there that can beat 5,000 incoming and outgoing calls to landline and mobile for the price.”
“I've used Numbergroup for a number of years now to manage an 0800 number for my website. They provided me with a memorable number, excellent customer service from day one and I've never had any technical issues. A great company, great support and real value for money.”
“Awesome service from this company. We have a few 0800 numbers and the service is faultless. Top marks.”
“Great company, been with them for nine years now — all good. Recommended.”
“Out of all the companies we looked at, NumberGroup offered exceptional value for money with an honest approach to pricing core technologies such as SIP trunks. They charge for service provision and calls, but don't charge stupid amounts of cash for SIP trunking or the ability to handle more than one call concurrently. The service has been of a consistently high quality and problem-free. It just works.”