Flexible, scalable, rock-solid reliable phone services - perfect for YOUR business!

Callagenix business phone services can be tailored to your exact requirements. Combine our wide range of UK and international phone numbers with our flexible services to create your ideal solution. No matter how simple or sophisticated your requirements, we’ve got you covered.

Get in touch

UK & Worldwide Numbers

Looking for a new number? We have a full range of UK and international numbers (100+ countries available) to choose from, including regional, freephone, national rate and premium rate options. Alternatively, port your existing number to us for better rates and more features.

Get Numbers

Flexible Phone Services

Our flexible and scalable phone services enable you to build the phone system you really need. From a simple call divert, to a fully featured virtual switchboard connecting multiple sites across the world, you’re free to create your ideal phone service.

Get Services

IP Telephony (VoIP)

Our business class VoIP service offers crystal-clear call quality on every call. With savings on line rental and low call rates, VoIP is a great way to cut your costs without sacrificing quality. With our VoIPinclusive service you can even fix your monthly phone bill!

Get VoIP

Choose from our pre-selected packages or create your own solution

With Callagenix, you get the flexibility to create the phone service that’s exactly right for you. It’s quick and easy to add new numbers, services, users and extensions at any time. If you’re not sure what you want, we have created several ready made solutions for popular situations. This gets you up and running quickly, and it’s a simple matter to customise your set up at a later stage.

You'll find some of these solutions listed below. If you don't see what you're looking for, let us know and we'll help you build the service you need.

International numbers

Do you do business abroad? If you have customers, agents or offices overseas, make it easy for them to contact you with our range of international phone numbers. We cover thousands of cities in over 100 countries, offering regional, national, toll-free, and universal freephone numbers. It’s easy to establish an overseas presence with Callagenix!

International numbers

Small businesses

Small businesses love Callagenix as we offer all the numbers and services you’ll ever need, at a fraction of the price of a traditional system. Our flexible services allow you to remain agile, so you can quickly act on new opportunities, and easily scale up as your business grows. You can even fix your monthly phone bill with our VoIPinclusive service.

Small business solutions


Hosted phone services are perfect for start-ups. Present a professional image from the start with a dedicated business number, even if you’re just forwarding calls onto your home or mobile number. Our services are location independent, hugely flexible and can be scaled rapidly, so they can grow and adapt as your new business does.

Start-up solutions


We fully support charities of all sizes, recognising the positive impact these organisations have on society. We offer a wide range of 0300 numbers, the number range reserved exclusively for charities and other non-profits, as well as preferential rates and possible promotional opportunities. Contact us today to find out more about how we can help.

Help for charities

Call centres

Our cloud based solutions offer great value to call centres, making it easy to set up and manage your teams of operatives. Set up multiple hunt groups and assign supervisors to manage them. Use the Wallboard and Call Data reports to track what’s going on. Our VoIP service can also save you a small fortune on line rental and call costs.

Call centre solutions

Business continuity

How would your business cope in a disaster? Our range of disaster recovery / business continuity services keeps your phone system up and running in the event of a flood, fire, or other crisis event. Host your phone system (or a mirror of it) in the cloud, set up an information line and send out SMS messages to keep everyone updated.

Business continuity solutions
Masters golf
Not on the high street
We use the Callagenix private conference service at least once a week so that I can conduct my meetings with all my teams both in the UK and Europe. I find the service so easy to use, we now rely on it as an integral part of our company communications.
Commercial Director, The Masters Golf Company Limited.
We’ve been with Callagenix for well over a decade now and our business has grown a lot in that time. It’s important for us that our phone system is flexible enough to grow with us and adapt to our requirements, which the Callagenix service definitely is.
Operations Manager, Clinic Appointments
Having one service provider for all our inbound global telephony has really simplified our internal processes, saving on costs. The flexibility of the Callagenix system also saves on traditional PABX hardware and being web-based makes it easy to maintain.
Managing Director, ParkCloud

Latest news & articles

A time for flexibility

How businesses found ways to enable those working from home to contribute fully by adopting measures such as remote computer links and conference calling...Read more

Help to grow

The importance of not just choosing the right systems but ensuring that they are able to be flexibly programmed in response to changing business needs...Read more

Roaming overseas

When you are travelling overseas for business what’s the best way to stay in touch?...Read more