Gamma

What Gamma does

Gamma Communications plc is a publicly listed UK-based B2B communications provider (LSE: GAMA, transitioned from AIM to the Main Market of the London Stock Exchange in 2025) that supplies voice, data, mobile, and cloud communications services to SMEs, mid-market, enterprise, and public sector organisations across the UK and continental Europe, with a recent expansion into APAC (Australia launch in 2026). The company operates a proprietary 2,500km fibre network with switching centres in London, Manchester, and Glasgow, and combines its own platforms — including the Horizon Cloud Phone System, Gamma UCX, Gamma Connect, Gamma Experience, Gamma Secure, and the iPECS-enabled Pragma stack — with deep integrations into third-party ecosystems such as Microsoft Operator Connect Teams, Cisco Webex (via Placetel and Starface), Amazon Connect, Ribbon SBCs, and Ericsson-LG iPECS. Acquired brands extend capability across CCaaS (Cirrus, Horizon Contact, BrightCloud, Neotel), UCaaS (Starface, Placetel, gnTel, Mission Labs/Gamma Labs), cybersecurity (Satisnet, SafeWeb, Gamma MDR), and international voice/SMS (Coolwave across 100+ countries).

Gamma runs a dual go-to-market model: SMEs are served through an extensive indirect channel — 1,500+ UK channel partners, 900+ Benelux partners, and 1,000+ German partners — while enterprise and public sector customers are sold to directly via the Gamma Enterprise sales organisation. Revenue is predominantly recurring subscription-based across cloud communications (UCaaS/CCaaS), calling/voice enablement (SIP trunking, Teams Direct Routing), connectivity (broadband, ethernet, mobile), channel partner wholesale services, and professional services for complex deployments. Customer segments span micro-business (PhoneLine+, CircleLoop), SME (Horizon, Gamma SIP Trunks, Gamma Mobile), corporate enterprise (managed networks, Microsoft Teams Phone, Webex for Gamma, Amazon Connect), and public sector (with public sector framework wins such as Dyfed-Powys Police via Welsh Government framework). Notable strategic customers disclosed include Care UK, OCS, E.ON, Highlander, and Wilson Wright LLP; the Benelux operation alone services 150,000+ businesses through resellers. Pricing is quote-based and not publicly disclosed, with billing on annual cadence; the company is the UK's #1 SIP provider per Ovum research, processes over 1 billion voice minutes per month, and was the UK's first carbon-neutral carrier (certified continuously since 2006) with MSCI AA ESG rating and SBTi-validated net-zero by 2042 targets.

Name

Gamma

Legal name

Gamma Communications plc

Website

https://gammagroup.co

Company type

Public

Founded year

2001

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

Gamma Communications is a publicly listed UK B2B provider of cloud communications, SIP trunking, connectivity, mobile, and security services, serving SMEs through 1,500+ channel partners and enterprise/public sector customers directly across the UK, Germany, Spain, Netherlands, and Belgium.

Ownership category

akta.pro rank

Product category

Cloud Communications

NAICS

Wired and Wireless Telecommunications (except Satellite) (5171), Wired Telecommunications Carriers (517111), All Other Telecommunications (5178)

SIC

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

akta.pro primary industry

UCaaS Platforms & Suites (HDAIAHAA)

akta.pro secondary industries

Contact Center (CCaaS) & Customer Engagement Voice (HDAIAHAF), Unified Communications & Contact Center for Workplace (UCaaS/VoIP, Meeting Rooms) (BPAEAIAE), Unified Communications (UCaaS) Apps (BPAMACAE)

Keywords

• Cloud communications services
• Unified communications platforms
• SIP trunking services
• Contact centre solutions
• Business mobile services

Headquarters

HQ city

London

HQ country

United Kingdom

HQ region

Europe

Offices9 records

Markets served

GTM type

B2B

Offering type

Software

Cost components

Personnel, Technology or R&D, Infrastructure, Operations, Marketing or Sales

Revenue model

1. Cloud Communications Services: UCaaS and CCaaS subscriptions including telephony, messaging, video, AI-driven customer experience platforms. Revenue from hosted phone systems, cloud PBX, and collaboration platforms.
2. Calling and Voice Services: Voice enablement services including SIP trunking, number hosting, call routing, and regulatory compliance. Also includes voice enablement for platforms like Microsoft Teams.
3. Connectivity Services: Broadband, ethernet, mobile access, and network connectivity services delivered in partnership with major network operators. Also includes security services.
4. Professional Services: Implementation, deployment, and support services for enterprise and public sector customers requiring complex, integrated communications solutions.
5. Channel Partner Services: Wholesale services to channel partners including provisioning, porting, reporting, invoicing, and knowledgebase access through dedicated partner portals.

Pricing tiers

Go-to-market motion3 records

Distribution channels6 records

Marketing channels8 records

Core offering

Gamma Communications is a UK-headquartered, pan-European B2B communications provider that sells cloud-based telephony, unified communications (UCaaS), contact centre (CCaaS), SIP trunking, business mobile, broadband connectivity, and cyber security solutions. The portfolio is organised across six pillars (Enable, Connect, Experience, Secure, Solutions, Toolbox) and combines Gamma's proprietary platforms (Horizon, Gamma UCX) with integrations to Microsoft Teams, Cisco Webex, and Amazon Connect.

Product overview

Gamma Communications is a pan-European B2B communications provider offering a comprehensive portfolio of cloud-based communication solutions built around three core categories: Calling, Cloud Communications, and Connectivity. The company combines its own proprietary technology platforms with leading third-party solutions, operating through the Gamma telecoms network and managed via an online portal. The product portfolio is organized into six main categories: Enable (foundational connectivity infrastructure), Connect (collaboration and UC platforms), Experience (customer contact and CX solutions), Secure (cybersecurity services), Solutions (enterprise transformation services), and Toolbox (partner tools and APIs). Key proprietary platforms include Horizon Cloud Phone System, Gamma UCX, and Gamma Toolbox, integrated with strategic third-party platforms such as Microsoft Teams Phone, Cisco Webex (via Placetel and Webex for Gamma), Amazon Connect, and iPECS. The portfolio serves SMEs through channel partners and larger organisations directly, with acquired brands including Starface, Placetel, Coolwave Communications, Gamma Labs, Pragma, Techland, Candio, Telsis, and Neotel expanding capabilities across UCaaS, CCaaS, cybersecurity, and international voice services.

Differentiator

Problem solved

Functional benefit

Brands

• GammaUCX: Collaboration solutions management platform
• Gamma Connect
• Gamma Enable
• Gamma Experience
• Gamma Secure
• Gamma Toolbox
• Horizon
• Horizon Contact
• Cirrus Contact Centre
• CircleLoop
• PhoneLine+
• Gamma Mobile
• Gamma SIP Trunks
• FUSION IoT
• Gamma FibreXchange
• SafeWeb
• Gamma MDR
• Gamma Edge
• Starface
• Placetel
• Epsilon
• iPECS

Products and services

• Horizon Cloud Phone System Award-winning hosted cloud communications platform that delivers converged fixed and mobile telephony, voice, video meetings, and instant messaging for businesses of all sizes.
• Gamma SIP Trunks SIP Trunking service from the UK's number one SIP provider, enabling businesses to make and receive external phone calls through Gamma's telecoms network with number hosting, call routing, and regulatory compliance.
• Gamma Mobile Business-only mobile network service providing mobile connectivity for UK businesses, supplied via MVNO agreement with Three UK with over 100,000 connections per year sold through partner networks.
• Horizon Contact Cloud contact centre solution providing AI-powered customer experience capabilities, including intelligent self-service and contact centre operations for SMEs and enterprise customers.
• Cirrus Contact Centre
• Microsoft Teams Phone Integration that voice-enables Microsoft Teams by routing external phone calls via Gamma's SIP infrastructure and Direct Routing capabilities, so Teams users can make and receive calls directly in the Teams interface.
• Webex for Gamma Cisco Webex integration providing Gamma customers with fully integrated voice, meetings, and messaging solutions across Europe through channel partners.
• Amazon Connect
• PhoneLine+ Single line phone solution providing quick and easy landline replacement for micro-businesses.
• CircleLoop
• Gamma Managed Detection and Response (MDR)
• Managed Security Operations Centre (SOC)
• SafeWeb
• Connectivity & Broadband
• FUSION IoT
• Enterprise Managed Solutions
• Gamma Contact for Service Providers
• STARFACE Unified communications provider offering on-premise and cloud-based telephony and collaboration solutions for SMEs and enterprises across the DACH region (Germany, Austria, Switzerland).
• Placetel Cloud-based communication and collaboration solution for businesses in Germany, known for easy-to-use VoIP systems and integration with Cisco Webex.
• Pragma (iPECS) Provider of iPECS UCaaS software, solutions, and services to the channel, providing the globally trusted iPECS Cloud service from Ericsson-LG Enterprise with AI-powered innovation.
• Coolwave Communications Gamma-owned provider of international voice and SMS services offering Cloud Communication Enablement with global connections across all continents through trusted relationships with carriers, operators, and service providers.
• Gamma UCX

Quantifiable outcome

• Over 1 billion voice minutes per month processed
• +3 more outcomes

Named customers7 records

Segments6 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration6 records

AI capability11 records

Feature15 records

Partnerships

Eight partnerships are on record, tiered core, major and support.

• Cisco (Webex)coreTechnology or Integration · 1 January 2025Gamma became an Operator Connect Teams programme operator, strengthening long-standing strategic partnership with Microsoft. In 2025, 'Horizon with Webex' and 'Webex for Gamma' were rolled out, bringing Cisco-powered collaboration into the portfolio. Also completed acquisition of Placetel from Cisco, strengthening Cisco Webex integration capabilities.
• O2 DaisymajorStrategic or Co-development Partner · 1 January 2025Long-term strategic relationship with O2 Daisy announced in 2025. Gamma agreed to support UCaaS capacity and to transition a portion of its UK direct SME base through a long-term wholesale arrangement.
• Clear BusinessmajorStrategic or Co-development Partner · 1 January 2025Strategic partnership launched in 2025 providing communications infrastructure as managed service behind services delivered to thousands of UK SMEs under the Clear Business brand.
• Ribbon CommunicationssupportTechnology or Integration · 1 January 2024Ribbon provides scalable and secure Session Border Controllers (SBCs) for Gamma's product portfolio.
• Amazon (Amazon Connect)coreTechnology or Integration · 1 January 2024Gamma offers Amazon Connect as part of its Gamma Experience portfolio, providing managed CX transformation for Enterprise customers.
• ThalessupportTechnology or Integration · 1 January 2024Gamma partnered with Thales to switch SIM supply to eco-designed cards made from recycled refrigerators, contributing to circular economy and environmental goals.
• Microsoft (Operator Connect)coreTechnology or Integration · 1 January 2021Gamma became one of a select group of operators on Microsoft's Operator Connect Teams programme. This strengthened the long-standing strategic partnership with Microsoft and raised Gamma's profile in UK and Europe.
• Three UK (MVNO)coreChannel Partner/ Reseller/ Distributor · 1 January 2020Gamma signed MVNO agreement with mobile operator Three UK in 2008. Gamma Mobile is the company's business-only mobile service.

Scale indicators12 records

Recent moves2 records

Expansion highlights7 records

Broad incumbents

• Microsoft Teams Phone (Operator Connect): Microsoft's native cloud telephony offering for Teams, distributed via the Operator Connect programme in which Gamma is itself a participant. Sets the competitive ceiling for hosted voice pricing and bundles for SME and enterprise buyers.
• Colt Technology Services: Pan-European enterprise connectivity and voice services provider with its own fibre network and UCaaS offerings. Comparable to Gamma on enterprise voice, SIP trunking and managed network services across Europe.
• BT Group: UK incumbent telecom offering business voice, SIP trunking, UCaaS via its own platforms and Microsoft Operator Connect. Direct competitor for enterprise and public-sector communications contracts and Gamma's largest domestic alternative.
• Cisco Webex: Cisco's collaboration and calling suite, integrated with Gamma via Placetel and 'Webex for Gamma'. A partner-platform on which Gamma depends, but also a competing UCaaS/CCaaS stack competing for the same enterprise budget.

Direct peers

• TalkTalk Business: UK B2B communications provider selling broadband, SIP, hosted voice and UCaaS through a large channel partner base. Closely comparable to Gamma's UK SME-led, partner-distributed model.
• NFON: European cloud telephony provider focused on SMBs, operating primarily in Germany, Austria, UK and other EU markets. Closely comparable to Gamma in DACH-region UCaaS, channel-led distribution and SME positioning.
• 8x8: International UCaaS and CCaaS provider with strong enterprise and contact-centre positioning. Competes with Gamma Enterprise and BrightCloud on CX transformation wins across European enterprise and public sector.
• RingCentral: Global UCaaS/CCaaS vendor whose cloud communications platform competes with Horizon, Horizon Contact and Gamma Experience, particularly for multinational enterprise and partner-led deployments in Europe.
• Daisy Group: UK unified communications, connectivity and cloud services provider to SMEs and enterprises, with significant channel reach. Competes head-to-head with Gamma Business and Gamma Enterprise in the UK mid-market.
• Vonage (Ericsson): Cloud communications platform (now owned by Ericsson) offering UCaaS, CCaaS and APIs, including SIP trunking and voice enablement for Microsoft Teams — directly overlapping Gamma's portfolio and channel strategy.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat8 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/wearegamma
• YouTubeyoutube.com/user/GammaCommunications
• Facebookfacebook.com/GammaCommunications
• LinkedInlinkedin.com/company/home
• Instagraminstagram.com/gammacomms

Compliance12 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles14 records

Subsidiaries25 records

Funding overview

Funding rounds2 records

Investors1 record

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

M&A12 records

Investments

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

Frequently asked questions about Gamma