What Columbus does

Columbus UK (trading as Columbus Telecom Ltd) is a Glasgow-headquartered, privately held Managed Service Provider founded in 1994 that delivers integrated business communications and IT services to UK businesses. Operating under a single-supplier, one-bill model, the company spans four service pillars: business voice (Horizon hosted phone systems, SIP trunks, call recording, inbound numbers, audio conferencing, fax2email), business data (broadband, fibre, converged services, assured broadband), business mobile (4G plans with MultiNet multi-network roaming, mobile broadband, M2M), and business IT services (managed IT support, hosted desktop, Microsoft 365, data backup, cabling/network design, PCI compliance, and KnowBe4 cybersecurity awareness training). Customer reach extends from UK SMBs to large pan-European enterprises across retail, financial services, legal, manufacturing, education, and local government.

The technical foundation is the Horizon cloud PBX, hosted in resilient UK data centres, with add-on modules for hosted call centre (Horizon Call Centre), unified communications (Horizon Collaborate, supporting up to 50 audio and 15 video participants), and integrations with more than 50 CRM systems. Mobile services run over Gamma's core infrastructure using the Three radio network with MultiNet automatic multi-network roaming, while complementary capabilities come via IBM MaaS360 for MDM and Akixi for call-centre wallboards. Compliance certifications include PCI DSS Level 1 (Columbus PCI Agent with 3D-Secure) and GDPR-aligned data handling. Recurring monthly subscriptions dominate revenue, supplemented by hardware sales (Polycom VVX handsets, mobile devices), professional services (cabling, audits, implementation), and an audit-led inside-sales GTM that funnels prospects through a free telecoms audit.

The company is bootstrapped with no disclosed external investment, founder/owner-operated, and has expanded its portfolio organically over 30 years rather than through M&A. Operational scope is UK-only, with Glasgow as the main operational base and a London registered office (16 Great Queen Street, Covent Garden). Headcount is not disclosed, and customer concentration appears low given the volume-based inside-sales model and multiple named enterprise references across unrelated verticals.

Name

Columbus

Legal name

Columbus Telecom Ltd

Website

https://columbusuk.com

Company type

Private

Founded year

1994

Operating status

Operating

Headcount range

11–50 employees

Short description

Columbus UK is a Glasgow-based Managed Service Provider delivering integrated voice, data, mobile, and IT services to UK SMBs and large enterprises since 1994 via its Horizon hosted platform and single-supplier recurring model.

Ownership category

akta.pro rank

Product category

Managed Telecommunications Services

NAICS

Wired Telecommunications Carriers (517111), Wired and Wireless Telecommunications (except Satellite) (5171), Wired and Wireless Telecommunications Carriers (except Satellite) (51711)

SIC

Services-Telephone Interconnect Systems (7385), Telephone Communications (No Radiotelephone) (4813), Communications Services, Nec (4899)

akta.pro primary industry

Business/Enterprise Fixed Connectivity Providers (SME/Enterprise Broadband) (HDAIABAI)

akta.pro secondary industry

Unified Communications & VoIP Telephony for Campuses (EDAEAHAE)

Keywords

• Business telecommunications services
• Managed IT services
• Hosted VoIP systems
• Unified communications solutions
• Business mobile plans

Headquarters

HQ city

Glasgow

HQ country

United Kingdom

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Infrastructure, Marketing or Sales, Supply Chain, Others

Revenue model

1. Voice Services: Recurring monthly revenue from hosted phone systems, SIP trunks, business lines, call recording, audio conferencing, fax2email, and inbound numbers. Includes per-user/month pricing for Horizon platform plus call charges.
2. Business Data Services: Monthly recurring revenue from broadband (assured, business, fibre), business internet, and converged broadband services. Typically per-connection monthly pricing.
3. Business Mobile Services: Monthly recurring revenue from business mobile phones, plans, mobile broadband, M2M, and roaming services. Tiered data plans with voice/SMS bundles (e.g., Business Extra 2GB-20GB tiers).
4. IT Services: Monthly recurring revenue from IT support, breakfix maintenance, hosted desktop, Microsoft 365 Business, PCI compliance solutions, cyber security awareness training, and data backup.
5. Hardware Sales: One-time revenue from IP handsets (Polycom VVX series), mobile devices, and related equipment. Hardware incentive programs available for qualifying orders.
6. Professional Services: Free telecoms audit service leading to paid recommendations and implementations. Site surveys, network design, and implementation services for cabling and infrastructure projects.

Pricing tiers

Go-to-market motion2 records

Distribution channels4 records

Marketing channels6 records

Core offering

Columbus UK is a Glasgow-based managed service provider delivering integrated business telecommunications, IT, mobile, and broadband services to UK businesses. Its core offerings centre on the Horizon hosted VoIP phone system and extend to SIP trunks, business mobile plans with MultiNet multi-network roaming, broadband and fibre connectivity, IT support, hosted desktop, managed Microsoft 365, PCI DSS compliant card payment solutions, and KnowBe4-managed cyber security awareness training, all delivered as a single supplier with one bill.

Product overview

Columbus UK is a managed service provider offering an integrated portfolio of business communications and IT services organised across four main categories: Business Voice Services (Horizon hosted phone systems, SIP trunks, call recording, audio conferencing, and inbound numbers), Business Data Services (broadband, fibre, and converged connectivity), Business Mobile Services (mobile plans with MultiNet multi-network roaming, mobile broadband, and M2M), and Business IT Services (IT support, hosted desktop, Microsoft 365, data backup, and cybersecurity training). The core platform is the Horizon hosted phone system, a cloud-based VoIP solution, which serves as the foundation for add-on modules including Horizon Call Centre (contact centre functionality), Horizon Collaborate (unified communications with messaging, video, and conferencing), and various voice/data增值服务. Columbus differentiates through single-supplier convenience with one bill, CRM integration with over 50 systems, and optional PCI compliance and disaster recovery capabilities.

Differentiator

Problem solved

Functional benefit

Brands

• Horizon: Hosted business phone system offering VoIP, call centre functionality, CRM integration, and unified communications features including Horizon Collaborate UC service.
• Horizon Call Centre
• MultiNet
• Columbus PCI Agent
• Business Mobile Extra

Products and services

• Horizon Hosted Phone System Cloud-based hosted VoIP phone system providing business telephone functionality without on-site equipment, managed from multiple resilient UK data centres with features including call routing, auto-attendant, mobile app integration, disaster recovery options, and Polycom VVX IP handset support.
• Horizon Call Centre Hosted call centre solution add-on to Horizon, providing scalable call centre functionality for UK SMEs with Akixi wallboard integration, queuing, and reporting capabilities.
• Horizon Collaborate Unified Communications service providing instant messaging, presence, voice, video, document sharing, desktop sharing, and audio/video conferencing for up to 50 audio and 15 video participants, accessible via desktop, tablet, or smartphone apps.
• SIP Trunks Virtual phone lines delivered over IP enabling businesses to consolidate voice and data over a single network with flexible inbound call routing, scalability, and up to 40% cost savings versus traditional ISDN.
• Business Lines and Calls Traditional business telephone lines and call services for businesses using or transitioning from analogue, ISDN2, and ISDN30 lines.
• Business Broadband Internet connectivity services including standard broadband, superfast fibre broadband, and high-speed business internet for UK businesses.
• Business Mobile Plans Business mobile phone plans and services offering 4G connectivity, MultiNet multi-network roaming, generous data allowances, unlimited voice and SMS, and UK-wide coverage via the Three network.
• MultiNet Multi-Network Roaming Innovative 4G service allowing automatic roaming across multiple UK mobile networks to obtain the best possible signal and reduce mobile not-spots for business mobile users.
• IT Support Managed IT support services including technical assistance, system maintenance, and troubleshooting for business IT infrastructure.
• KnowBe4 Cyber Security Awareness Training Managed security awareness training service using the KnowBe4 platform combined with simulated phishing attacks to help businesses manage social engineering risks, with monthly reporting and ongoing consultation.
• Columbus PCI Agent (PCI DSS Compliance Solutions) Cloud-based PCI DSS Level 1 accredited card payment solution enabling customers to input card details via telephone keypad into a secure environment, with 3D-Secure integration and no card data touching business systems.
• Microsoft 365 Business Managed Microsoft 365 services including Office applications, Teams, Exchange, and SharePoint with installation, configuration, and ongoing support.
• Hosted Desktop Cloud-hosted desktop infrastructure allowing users to access their workstation and applications from any device with internet connection.
• Call Recording PCI DSS, FSA, and MiFID II compliant call recording solution for businesses requiring regulatory compliance with recording and storage of conversations.
• Assured Broadband Guaranteed broadband service with backup connectivity options ensuring business continuity and reliable internet access.
• Business Data Backup Cloud-based data backup and recovery services protecting business critical data with secure off-site storage and disaster recovery capabilities.
• Inbound Numbers Non-geographic telephone numbers including 03, 08, and geographic numbers for businesses to receive calls with flexible routing options.
• Mobile Broadband 4G LTE mobile internet connectivity for businesses requiring wireless broadband access, available via USB modems, SIMs, and mobile WiFi hotspots.
• M2M Mobile Connectivity Machine-to-machine mobile connectivity services for IoT devices, sensors, and automated systems requiring cellular data connections.
• Converged Broadband Services Combined voice and data services over a single connection, replacing separate telephone lines and broadband with unified connectivity.
• Audio Conferencing Conference calling service enabling multiple participants to join audio meetings, delivered as part of the Horizon Collaborate UC service.
• Fax2Email Service converting incoming faxes to email format, eliminating the need for physical fax machines and enabling digital document management.
• Business Cabling and Networks Physical network infrastructure design and installation services including structured cabling, ethernet, and network design for business premises.
• Breakfix Maintenance Equipment repair and replacement services for business technology infrastructure when hardware failures occur.

Quantifiable outcome

• Average 30% savings on telecoms spend for customers who switch
• +1 more outcomes

Named customers4 records

Segments5 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration8 records

Feature8 records

Partnerships

Five partnerships are on record, tiered minor and core.

• CyberSmartminorGTM or Marketing Partner · 1 February 2026Columbus UK promoted to Growth Partner status for CyberSmart cybersecurity solutions, enabling enhanced go-to-market for cyber protection services.
• GammacoreTechnology or Integration · 1 June 2016Key UK network partner for Columbus Business Mobile service. Gamma's core mobile network infrastructure (acquired in 2014) underpins Columbus's mobile offering. Partnership includes 4G support, VoLTE, Voice over WiFi, and MultiNet multi-network roaming capability. The service delivered over Three network with roaming agreements with all other UK networks.
• Three (UK Mobile Network)coreTechnology or IntegrationPrimary radio access network for Columbus Business Mobile service. Selected based on excellent independent performance results in 2014 and 2015. Provides 4G as standard on all tariffs with roaming agreements to all other UK networks for MultiNet capability.
• KnowBe4coreTechnology or IntegrationColumbus provides KnowBe4 as a managed security awareness training service. KnowBe4 is the world's leading integrated platform for IT and cyber security awareness training combined with simulated phishing attacks. Columbus provides ongoing professional consultation, phishing campaign setup, and monthly reporting as managed service.
• EricssoncoreTechnology or IntegrationMobile core network built on latest Ericsson software build supporting 4G, Voice over WiFi, and VoLTE technologies for Columbus Business Mobile service.

Scale indicators6 records

Recent moves7 records

Expansion highlights5 records

Direct peers

• Spitfire Network Services: UK independent business internet, voice and SIP provider serving SMB through mid-market — comparable converged connectivity and voice proposition with similar ICP to Columbus.
• Onecom: UK business mobile, fixed line and unified communications provider for SMB and mid-market — directly overlaps Columbus's mobile, hosted voice and UC portfolio with similar go-to-market.
• TalkTalk Business: UK business broadband, voice and connectivity provider serving SMB and mid-market — comparable wholesale/retail voice+data+mobile bundle aimed at the same customer segments as Columbus.
• Gamma Communications: UK wholesale and direct provider of hosted voice, SIP trunks, mobile and unified communications to SMB and mid-market — Gamma is both Columbus's core network partner and a direct competitor selling Horizon-equivalent services to the same customer base.
• FluidOne: UK business connectivity, cloud and communications platform provider to SMB and mid-market — overlapping voice, data and managed services proposition targeted at the same segments as Columbus.
• Daisy Communications: UK-based business telecoms, broadband, mobile and IT managed services provider targeting SMB through mid-market and enterprise — directly comparable to Columbus in customer profile, product breadth and geographic focus.
• Wavenet: UK managed service provider offering telephony, broadband, mobile, cloud and cybersecurity to SMB and enterprise — directly comparable converged portfolio and customer profile to Columbus.

Broad incumbents

• BT Business: UK incumbent business telecoms and IT provider with full mobile, broadband, voice, networking and IT services portfolio — competes broadly with Columbus across all product lines from a much larger scale and brand position.
• Vodafone Business UK: National business mobile and fixed line provider with IoT, broadband and UC solutions — broad incumbent comparable to Columbus for mobile, fixed voice and converged SMB offerings.
• Virgin Media O2 Business: UK cable/fibre-based business connectivity, mobile and voice provider competing across SMB and enterprise — broad incumbent with overlapping broadband, mobile and voice proposition to Columbus.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/columbus_uk
• LinkedInlinkedin.com/company/columbus-uk-columbus-telecom-ltd-

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Columbus