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Telecoms Companies in Southampton: 174 Active Firms (2026)
Telecoms companies in Southampton provide connectivity, voice, data and network services for businesses across the city region.
Buying centres tend to sit with IT managers, finance directors and estates teams rather than consumer marketing functions. Typical Southampton-area providers sell business broadband, hosted voice, mobile connectivity, managed network support and carrier-facing services into SMEs, mid-market organisations, public-sector sites and other communications operators. Engagements often start around office connectivity, call handling or site-to-site networking, then broaden into monitoring, maintenance and supplier management where the provider becomes part of the customer’s operational plumbing. The fit is therefore less about consumer telecoms retail and more about recurring business services, local responsiveness and the ability to support customers across the South Coast and wider UK.
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Southampton has 174 active telecoms companies, making the cohort compact but broad enough to include infrastructure, hosted communications and managed-service specialists. Reported employment across the cohort is 1,272 people, so the footprint is visible without implying a large local corporate base. Most firms appear to sit below enterprise scale, with only a small revenue-scale layer above the long tail of owner-managed and specialist operators. For researchers, that makes the city useful as a South Coast telecoms cluster rather than a proxy for the UK’s main carrier market.
Commercial telecoms in Southampton sits inside a layered market: some providers own or manage network assets, while others package wholesale access, voice platforms and support into business contracts. Contract structure matters because customers usually depend on continuity of service, fixed response times, number management and clear responsibilities across access, hardware and support. Public-sector and larger commercial buyers tend to scrutinise resilience, cyber controls, service credits and supplier lock-in before switching. Wayleaves, building access and wholesale availability can also shape delivery, especially where multi-site customers need consistent service across the South Coast rather than a single office connection.
Demand appears likely to favour providers that can combine everyday connectivity with managed communications, security-aware support and supplier coordination. The early-commercial weight of the cohort suggests many firms will remain specialist rather than becoming national carriers, while the scarcer scale-up layer may keep acquisition interest focused on customer books, support capability and local network knowledge. Margin pressure tends to come from wholesale pricing and customer expectations around uptime, so differentiation is more likely to rest on service design and vertical focus than on generic connectivity alone.
174
Active firms
2026
9
Above £5M
Annual revenue
27
Recent incorporations
Since 2022
Key facts
About 5% of the trading cohort reports turnover above £5M (9 of 174 firms) — the rest sits below that revenue band.
15% of the cohort was incorporated since 2022 (27 firms), so a sizeable share is in its first few filing cycles.
Southampton telecoms suppliers cover fixed and mobile access, voice, data and managed network services for business customers.
Buyer needs centre on everyday uptime, multi-site links, customer contact and the network layer behind cloud-based work.
The city-region market spans network-service providers, business connectivity resellers, voice and data specialists and managed-network operators.
Larger regional providers tend to compete on broader contract coverage, while smaller specialists serve narrower business-connectivity requirements.
Top Southampton Telecoms companies
F ONE Technologies
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides IT and telecommunications services for businesses, including cloud phone systems, business mobile SIM plans, internet connectivity, Wi‑Fi and networking setup, and managed IT support such as…
Serves UK businesses of varying sizes, especially organisations with office, mobile or multi-site teams needing supported communications, connectivity, Microsoft 365 and cybersecurity.
Financial Health
HealthyHealthy · Hiring · 7% CAGR over 4y
Location
circle.cloud
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsProvides business telecommunications services including cloud-based and VoIP phone systems, business broadband and internet connectivity, and related technical support for unified communications and…
Targets small and growing businesses, especially operations and IT decision-makers responsible for workplace communications, connectivity and support.
Financial Health
DistressedDistressed
Location
GW NET-WORKING LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides IT support and managed services including systems management, application hosting on private cloud infrastructure, VoIP telephony, Office 365 setup and migration, backup and disaster…
Serves businesses with office-based IT needs, including SMEs and local offices of larger companies, across sectors such as marine, recruitment, security and professional services.
Financial Health
HealthyHealthy · -7% CAGR over 5y
Location
3C CAPITAL LTD
Trajectory
4y · 2023–NowProvides business telecommunications services including cloud-based and VoIP phone systems, business broadband and internet connectivity, and setup and support for unified communications and…
Serves businesses, particularly small firms, needing telecoms, VoIP phone systems, business broadband and ongoing communications support. Targets decision-makers responsible for connectivity and…
Financial Health
Insufficient historyInsufficient history · 0% CAGR over 2y
Location
YO TELECOM LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides business telecommunications and IT services including VoIP phone systems, business mobiles, broadband and Wi‑Fi, call recording and management software, computer telephony integration, and…
Serves UK businesses, particularly SMEs and multi-site operators in dental, hospitality, medical, veterinary, care homes, opticians, hotels, estate agencies and nurseries.
Financial Health
StrongStrong · Growing, Hiring · 7% CAGR over 4y
Location
MYFIBRE LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides dark fibre network infrastructure and high‑bandwidth connectivity services. Designs and deploys point‑to‑point fibre links, campus networks and community FTTH networks, and enables…
Serves businesses, network providers and community broadband projects needing private dark fibre links, FTTH deployment and interconnections, particularly campus or metro environments such as film…
Financial Health
HealthyHealthy · Hiring · 37% CAGR over 4y
Location
KINGSTAR SERVICES LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StrongStrong · Growing, Hiring · 19% CAGR over 4y
Location
Circle Cloud Communications Ltd
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides business telecommunications services including cloud‑based and VoIP phone systems, business broadband and internet connectivity, and IT support. Offers setup and ongoing support for unified…
Serves B2B customers, particularly small businesses and organisations whose operations or IT leaders buy business phone, internet and communications support.
Financial Health
StrongStrong · Growing, Hiring · 28% CAGR over 4y
Location
Fibrebit Ltd
Trajectory
3y · 2024–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
HealthyHealthy · Hiring · 50% CAGR over 1y
Location
HJS TECHNOLOGY LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides managed IT support and cybersecurity services for businesses, including helpdesk support, network monitoring, disaster recovery, and security management. Also supplies IT hardware, cloud…
Serves UK businesses, especially SMEs and organisations without in-house IT teams, needing outsourced IT, cybersecurity, telecoms, connectivity and document solutions.
Financial Health
StrongStrong · Growing, Hiring · 4% CAGR over 4y
Location
LEO COMMUNICATIONS LTD
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsFinancial Health
StableStable · -81% CAGR over 3y
Location
Wirebird Connections Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed · 0% CAGR over 4y
Location
Innex Technologies Limited
Trajectory
5y · 2022–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · 0% CAGR over 4y
Location
MISSION CONTROL LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides RF licensing and frequency coordination for wireless microphones, in-ear monitors, two-way radios and video systems used in live events and touring productions, including regulatory…
Serves B2B production teams, tour managers, live event organisers and technical suppliers for concerts, festivals, sports events and construction projects using wireless audio, video or radio systems…
Financial Health
HealthyHealthy · -64% CAGR over 4y
Location
Milton Speyside Ltd
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
WeakWeak
Location
Sarma Consulting Limited
Trajectory
5y · 2022–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy
Location
TETRA NETWORKS LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
WeakWeak · 0% CAGR over 2y
Location
SQUALK LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy
Location
NEWT COMMUNICATIONS LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy
Location
Arosha Ltd
Trajectory
1y · 2025–NowFinancial Health
Insufficient historyInsufficient history
Location
Atom Ip Ltd
Trajectory
5y · 2022–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy
Location
NEXT COMMUNICATIONS LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides telecommunications services for businesses, including VoIP phone systems, cloud and on‑site PBX, business mobile plans and devices, broadband and leased‑line connectivity, IoT connectivity,…
Serves small and medium-sized businesses across Hampshire and the South of the UK, targeting organisations needing business telecoms, mobile, broadband and remote-working connectivity.
Financial Health
StableStable
Location
PROAC SOLUTIONS LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides telecommunications and network infrastructure services for businesses, including fibre optic and structured data cabling installation, business telephone systems (hosted and on‑premise),…
Serves businesses of all sizes across the UK, with emphasis on organisations in Hampshire and the South of England needing telecoms, network cabling, CCTV and related network services.
Financial Health
DistressedDistressed · 0% CAGR over 4y
Location
BUSINESS TECHNOLOGY PARTNERS LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides managed IT support and services for businesses, including helpdesk support, remote and on-site technical support, hardware and software supply, network and IT infrastructure installations,…
Serves small and mid-sized businesses in Hampshire and nearby areas, particularly organisations without in-house IT cover that need support for office users, networks, cloud, telecoms and…
Financial Health
StableStable · 0% CAGR over 2y
Location
Onecom
Provides business telecommunications and IT services, including mobile phone contracts, broadband and connectivity, hosted VoIP and unified communications, cloud contact centre platforms, and managed…
Serves SMEs, enterprise businesses and public sector organisations, targeting IT, operations and communications buyers responsible for mobile, connectivity, cloud communications, contact centres and…
Location
Onecom
Provides business telecommunications and IT services including mobile phone contracts, broadband and fibre connectivity, hosted VoIP and unified communications, cloud contact centre platforms, cloud…
Sells to SMEs, enterprise organisations and public sector bodies, primarily IT, telecoms and operations decision-makers responsible for workforce mobility, connectivity, cloud communications, contact…
Location
DOMO TACTICAL COMMUNICATIONS (DTC) LIMITED
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
HealthyHealthy · Profitable, Hiring · 13% CAGR over 1y
Location
CITRUS TELECOMMUNICATIONS LTD
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides telecommunications services including carrier-grade voice connectivity, hosted cloud phone systems, inbound and international numbering, and a multi‑channel hosted contact centre platform.…
Serves B2B telecom resellers, communications providers, and organisations needing hosted voice, inbound numbering, and multi-channel contact centre services.
Financial Health
StrongStrong · Growing, Hiring · 14% CAGR over 3y
Location
HAMPSHIRE BUSINESS COMPUTERS LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides managed IT support and consulting for businesses, including Microsoft 365 and Azure cloud services, cybersecurity, backup and disaster recovery, internet connectivity, VoIP telephone…
Serves businesses of all sizes in Hampshire and around Romsey, Southampton and Winchester, including organisations with existing IT teams and those seeking a fully outsourced IT function.
Financial Health
WeakWeak · 0% CAGR over 4y
Location
NET PRIMATES LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides managed IT support services for businesses, including Microsoft 365 management, cyber security services, and IT infrastructure support. Also supplies connectivity and telecommunications…
Serves businesses in Hampshire, Dorset and nearby areas that need outsourced IT, cyber security, Microsoft 365, connectivity and telecoms support, typically teams seeking fixed-price support and a…
Financial Health
HealthyHealthy · 0% CAGR over 2y
Location
IN-TECH TELECOM LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides business telecommunications and IT services including phone systems, cloud voice/VoIP, SIP trunking, fixed lines and call packages, business broadband, mobile services, and IT support…
Serves small and mid-sized businesses needing telecoms, IT and connectivity suppliers, including office-based teams and organisations such as veterinary practices, laboratories and other commercial…
Financial Health
StableStable · 0% CAGR over 2y
Location
Gradwell Communications
Trajectory
2y · 2020–NowFinancial sub-scores
Computed from 2 filingsProvides business telecommunications services including VoIP phone systems, SIP trunking, hosted 3CX platforms, Microsoft Teams direct routing, business broadband, leased lines and mobile services,…
Sells to businesses and organisations, particularly 3CX users and teams adopting Microsoft Teams telephony, SIP trunks, broadband and mobile services, with some focus on education customers.
Financial Health
StableStable · 3% CAGR over 1y
Location
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides business communication services including VoIP phone systems, business mobile plans across major carriers, internet connectivity and IT support. Offers hosted telephony features, call…
Serves businesses needing communications and connectivity support, including office-based, remote and mobile teams, CEOs requiring roaming, IT teams with high data needs, and on-the-go staff across…
Financial Health
HealthyHealthy · Hiring · 29% CAGR over 2y
Location
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides hosted voice and SIP trunking services, enabling businesses to manage telephone numbers and route calls through cloud platforms. Offers telephony integration with collaboration tools such as…
Serves UK businesses and organisations using hosted voice, SIP trunking and cloud telephony, particularly those migrating calling into Microsoft Teams or Webex and existing customers moving from…
Financial Health
StableStable · 0% CAGR over 5y
Location
S-IMSY LTD
Trajectory
1y · 2025–NowFinancial Health
Insufficient historyInsufficient history
Location
TEKGUYS LIMITED
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides managed IT support and telecommunications services for businesses, including broadband and fibre connectivity, cloud hosting and cloud telephony, mobile contracts and devices, and network…
Serves businesses seeking outsourced IT, telecoms, connectivity, cloud and mobile support, especially organisations wanting predictable monthly technology costs and a single supplier.
Financial Health
StableStable · -13% CAGR over 2y
Location
Ft Security Systems Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsSupplies and installs business telecommunications and security systems, including VoIP phone systems, IP phones, call recording and reporting tools, broadband and mobile services, CCTV and access…
Serves businesses of all sizes, including motor trade firms and schools, with buyers such as business owners, office managers and operations teams responsible for communications, IT and premises…
Financial Health
StableStable · -26% CAGR over 5y
Location
Accelerator Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides managed IT, telecommunications and audiovisual solutions for businesses, including network support, fibre and leased line connectivity, hosted telephony, public Wi‑Fi, meeting room systems,…
Serves businesses, especially commercial property owners/managers, managed property portfolios, SMEs and professional services firms needing outsourced IT, telecoms and AV support.
Financial Health
StrongStrong · Hiring · 10% CAGR over 4y
Location
Arqiva
Provides broadcast transmission and media services for television and radio, including channel distribution, playout, and DAB networks. Operates smart metering and utility data networks, and delivers…
Serves B2B and public-sector customers in broadcast media, utilities and secure communications, including TV/radio broadcasters, energy and water companies, satellite operators, telecoms providers,…
Location
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides cloud-based telephony services and voice routing platforms that integrate calling with collaboration tools such as Microsoft Teams and Webex. Offers hosted voice services, direct routing,…
Serves B2B organisations and global enterprises that use Microsoft Teams, Webex, hosted voice, contact centre or multi-vendor telephony environments, alongside channel partners supporting business…
Financial Health
StrongStrong · Hiring · 7% CAGR over 5y
Location
Meraki Network Services Limited
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
StrongStrong
Location
Oak Telecoms & Rigging Services Ltd
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
DistressedDistressed · 0% CAGR over 1y
Location
Chrome Telecom Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides business telecommunications and IT services, including cloud phone systems, business mobiles, network connectivity, managed IT support, cyber security monitoring, CCTV integrations, and…
Sells to UK businesses, especially SMEs, with sector focus on care homes, dental and medical practices, estate agents, logistics firms, garages, hospitality venues, vets, education providers and…
Financial Health
StrongStrong · Growing, Hiring · 17% CAGR over 5y
Location
ELEMENTEL LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides cloud-based VoIP business phone systems, hosted telephony, and Microsoft Teams calling solutions. Also offers IT support, business broadband, mobile services, and connectivity products to…
Sells to UK businesses seeking telecoms, connectivity and IT support, including teams managing office phones, remote working, Microsoft Teams calling, mobiles and business broadband.
Financial Health
StableStable · -18% CAGR over 4y
Location
Daly Systems Limited
Trajectory
2y · 2022–NowFinancial sub-scores
Computed from 2 filingsProvides business telecommunications and IT services, including mobile phone contracts, hosted VoIP and unified communications, cloud contact centre platforms, broadband and ethernet connectivity,…
Serves SMEs, enterprise organisations and public sector bodies, targeting IT, operations and customer experience teams managing mobile workforces, connectivity needs and contact centres.
Financial Health
StableStable · -4% CAGR over 1y
Location
Onecom
Provides business telecommunications and IT services including mobile phone contracts, broadband and ethernet connectivity, hosted VoIP and unified communications, cloud communications platforms,…
Targets SMEs, enterprise organisations and public sector bodies, particularly IT, communications, operations and customer experience teams responsible for mobile fleets, workplace connectivity, cloud…
Location
Provides broadcast and communications infrastructure services, including television and radio transmission, media playout and distribution, satellite data communications, and network services for…
Serves B2B customers in the UK and globally, including broadcast and media brands, energy and water utilities, satellite operators, telecoms providers, military organisations, and energy/mobility…
Location
Arqiva
Provides broadcast transmission and media services for television and radio, including channel distribution, playout and DAB networks. Operates communications infrastructure and networks for smart…
Serves broadcasters and media brands, energy and water utilities, satellite operators, telecoms providers, mobility and energy companies, and military organisations in the UK and internationally.
Location
Arqiva
Operates broadcast and communications infrastructure providing television and radio transmission, channel distribution, media processing and streaming services. Also runs smart metering and utility…
Serves B2B and public-sector customers in broadcast media, utilities and satellite communications, including TV/radio broadcasters, energy and water companies, satellite operators, telecoms…
Location
Arqiva
Operates broadcast and communications infrastructure, providing television and radio transmission, media playout and distribution, satellite data communications, and connectivity networks supporting…
Serves B2B and public-sector customers in broadcast media, utilities, satellite, telecoms, energy, mobility and defence, including TV/radio brands, water and energy companies, satellite operators and…
Location
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How Southampton Telecoms companies work and how to sell to them
What they do
Revenue usually comes from recurring service charges rather than one-off equipment resale. Southampton telecoms providers tend to package broadband circuits, hosted voice seats, mobile connections, network monitoring and support retainers into fixed-term business contracts, with installation, hardware and consultancy billed separately. Pricing is often per site, per user, per connection or per managed device, with wholesale access costs passed through at a margin. Carrier-facing work can look different: volume-based traffic, infrastructure support or specialist engineering services. The commercial centre of gravity is therefore recurring operational dependency, not a single software licence or hardware transaction.
Who they sell to
Most sell to SMEs, mid-market employers, public-sector sites and other communications providers that need dependable connectivity without managing every supplier themselves. Decision-makers typically include IT managers, finance directors, operations leads, facilities or estates teams, and procurement managers where the buyer has multiple sites. Smaller deals can move through direct sales, referrals and account management, while larger connectivity, voice and managed-network contracts tend to involve technical scoping, service-level negotiation and supplier due diligence. Public-sector and larger commercial buyers are more likely to use formal tenders or procurement panels, especially where resilience, data security and continuity obligations are material.
What they buy
Most telecoms firms tend to spend on systems that help them provision services, bill accurately and keep support costs under control. Relevant categories include CRM, quoting and contract management, subscription billing, usage rating, ticketing, network monitoring, service-desk workflow, customer portals, cyber security, backup, analytics and finance software. They may also buy wholesale connectivity, cloud hosting, voice infrastructure, routers, switches, cabling, field engineering, logistics, number management, legal advice, accounting support and recruitment services. Smaller providers often favour tools that reduce manual reconciliation between wholesale suppliers, customer contracts and support queues, because margin can leak through errors, delays and unmanaged service credits.
Why and how to sell to them
Telecoms buyers tend to evaluate suppliers when customer churn rises, wholesale costs move, support volumes outgrow the service desk, or a new contract requires tighter reporting and response times. Other triggers include a move into managed security, hosted voice migration, public-sector tender activity, leadership change, acquisition of a customer book, or hiring across sales operations and technical support. Outbound angles work better when tied to operational friction: faster provisioning, fewer billing disputes, clearer service-level reporting, better customer retention or lower time spent coordinating wholesale suppliers. Generic productivity claims are less useful than proof that a tool reduces rework in a service-dependent business.
How this list is built
Data sources
This list is built from UK Companies House filings, XBRL accounts data, and semantic analysis of each company's public website. Revenue and headcount figures come from the most recent filed accounts; where the company has not filed, values are estimated using a model trained on filed history and peer benchmarks and are labelled as estimates.
Classification
Rather than relying solely on SIC codes, Firmbase classifies each company semantically: the company's website is crawled, an AI model reads what the company actually sells, and the company is placed into the relevant industry and subsectors. SIC codes are used as one signal but not the only one. This means a company that registered under a generic SIC code but pivoted into (for example) fintech is correctly identified as fintech, not as its original SIC category.
Freshness
The underlying company data is refreshed from Companies House continuously; filings appear in the list within days of submission. The curated list ordering is regenerated when the underlying data moves meaningfully (company count changes by more than 5%, a new company enters the top-ranked segment, or the filed-revenue numbers for the top firms change). You can see the last-updated timestamp near the top of the page.
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Frequently asked questions
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