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Broadband Companies in Cardiff: 35 Active Firms (2026)
Broadband companies in Cardiff build, operate and resell fixed-line internet access and cable connectivity across the city-region.
Buying centres tend to sit with estates teams, IT managers, landlords, housing providers and public-sector procurement teams rather than with general software buyers. The offer is usually practical: access circuits, cable works, customer-premises equipment, service provisioning, fault response and wholesale connectivity packaged into managed internet access. Engagements look less like national telecoms procurement and more like neighbourhood infrastructure jobs or business-site connectivity contracts, with sales cycles shaped by wayleaves, installation capacity and the availability of nearby network assets. Small operators can therefore sit between infrastructure build, managed service and resale, depending on what they control directly.
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Cardiff has 35 actively trading broadband firms in this list, a small local cohort for an infrastructure sector that still needs physical works, installation labour and support operations. Reported employment totals 131 people, pointing to a market made up largely of compact operators rather than dense city-scale engineering teams. The profile fits access-network builders, cable installers, managed internet providers and resellers serving business premises, landlord portfolios, homes and public-sector sites across the metropolitan area. Only a narrow slice appears to have crossed into larger turnover bands, so the revenue base is likely concentrated in a few scaled operators and a longer tail of smaller specialists.
Access-network and resale models carry different operating burdens. Network builders need permissioned access to streets, ducts, buildings and customer premises, while resellers depend more on wholesale terms, service-level commitments and fault ownership. Public-sector and landlord contracts add procurement discipline, documentation and continuity expectations, even when the supplier itself is small. Consumer-facing activity brings its own complaints, billing and service-notice obligations, so the distinction between engineering contractor, internet service provider and managed connectivity partner matters. In Cardiff, that mix makes local delivery capability at least as important as national coverage claims.
The cohort appears likely to remain split between small access specialists and a thinner set of operators with enough recurring revenue to fund installation teams, support desks and supplier relationships. Consolidation tends to be plausible where neighbouring networks, landlord contracts or managed-connectivity books overlap, but broadband delivery is still constrained by civils access, local trust and service reliability. Growth therefore looks incremental rather than speculative. Firms with direct control over installation quality and customer support should have more room to defend margins than pure resellers, particularly where business sites and public-sector premises need accountable local provision.
35
Active firms
2026
2
Above £5M
Reported revenue
4
Recent incorporations
Since 2022
Key facts
About 5% of the trading cohort reports turnover above £5M (2 of 35 firms) — the rest sits below that revenue band.
11% of the cohort was incorporated since 2022 (4 firms), so a sizeable share is in its first few filing cycles.
Cardiff broadband providers cover fixed-line internet access, cable connectivity, resale and managed connectivity rather than a single service model.
Local connectivity is bought through a mix of infrastructure operators, managed service providers and smaller resellers, so routes to market can vary by contract type.
Resale, installation and managed connectivity can sit alongside network ownership, which makes supplier comparisons less direct than in simpler software or services markets.
UK broadband suppliers have to account for telecoms rules on switching, complaints and contract information, even where they resell another operator's network.
Top Cardiff Broadband companies
Comm-Tech Voice & Data
Trajectory
4y · 2020–NowFinancial sub-scores
Computed from 4 filingsProvides business communications and IT services including VoIP and hosted telephony, phone systems, broadband and leased line connectivity, managed Wi‑Fi and SD‑WAN, mobile solutions, Microsoft 365…
Sells to UK businesses needing integrated communications, connectivity, IT support and cyber security. Serves organisations seeking business telephony, broadband, mobile, Microsoft 365, IoT and…
Financial Health
DistressedDistressed
Location
DESHTE LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed
Location
LAYTEL LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed · 0% CAGR over 4y
Location
NETLEAD LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides dedicated internet connectivity, cloud hosting, and data centre colocation services for businesses. Offers high‑speed leased line internet access, cloud infrastructure, and hosting solutions…
Serves businesses of all sizes, from start-ups to large publicly traded companies, plus technology partners selecting services for their own clients.
Financial Health
WeakWeak · 0% CAGR over 1y
Location
TALK TOGETHER (WALES) LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides business telecommunications services including telephone systems, cloud VoIP, business mobile contracts, broadband and dedicated internet access. Supplies IP phones, Wi‑Fi and network…
Serves businesses in South Wales, particularly SMEs with office, remote or hybrid teams needing managed telecommunications and connectivity support.
Financial Health
HealthyHealthy · Hiring · 14% CAGR over 4y
Location
G Force Telecomms Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides telecommunications infrastructure services including overhead cable installation, fibre splicing, network build and maintenance, vacuum excavation, civil engineering, and surveying and…
Sells to telecoms operators, infrastructure contractors, and civil engineering firms needing network build, installation, and maintenance services. Also serves telecoms and civil engineering…
Financial Health
StrongStrong · Growing, Hiring · 30% CAGR over 4y
Location
Linc Telecom Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides business telecoms and connectivity services including unified communications, VoIP and fibre broadband. Supplies and supports digital print and multifunction devices, installs CCTV and…
Serves B2B customers, including businesses and organisations across Wales and the UK, with emphasis on Cardiff-area firms needing workplace telecoms, connectivity, print, security, energy and…
Financial Health
HealthyHealthy · Hiring · 15% CAGR over 4y
Location
R F BUILDING & UTILITIES LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides multi-utility installation and civil engineering services for telecoms and energy networks, including fibre optic installation, cable blowing and splicing, HV and LV cable laying and…
Serves B2B utility and telecoms customers, including network operators, fibre broadband providers, developers and contractors needing multi-utility, FTTP/MDU, HV/LV and civils project delivery…
Financial Health
StrongStrong · Growing, Hiring · 73% CAGR over 4y
Location
INTEGER IT & TELECOM SERVICES LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides business telecommunications and IT services, including VoIP and on‑premise phone systems, business broadband and leased lines, mobile packages, network design, cloud services, IT…
Serves business customers in South Wales and South West England, including organisations needing telecoms, broadband, mobile, phone system and managed IT support across office-based and remote teams.
Financial Health
StableStable · Hiring · 24% CAGR over 4y
Location
123 Telecom Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides business telecommunications services including cloud telephony and hosted phone systems, Microsoft Teams calling integration, broadband and fibre internet, leased lines, call recording,…
Serves B2B organisations in the UK, especially small businesses and SMEs, as well as corporates, call centres, international charities and government bodies. Also targets partners and IT…
Financial Health
HealthyHealthy · Hiring · 5% CAGR over 4y
Location
JMP Telecoms Limited
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsFinancial Health
WeakWeak · -31% CAGR over 3y
Location
JIGA HERTZ ELECTRICAL ENGINEERING AND GENERAL SERVICES LIMITED
Trajectory
3y · 2021–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
StrongStrong · Growing · 0% CAGR over 3y
Location
Tele-Response Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides business telecommunications services including installation and support of telephone systems, cloud-hosted telephony, VoIP migration, SIP trunking, broadband and leased line connectivity,…
Serves businesses of varying sizes and NHS organisations that need business telephony, connectivity, mobile SIM and legacy phone system support.
Financial Health
StableStable · Hiring · 26% CAGR over 4y
Location
B&C Telecoms Ltd
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
StrongStrong
Location
DAH Telecoms Ltd
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
StrongStrong
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed
Location
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy
Location
BA Cheshire Ltd
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsFinancial Health
DistressedDistressed
Location
Lg Networks & Civils Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides civil engineering and infrastructure works for utilities and public sector projects, including highway and footway construction, drainage works, traffic management, telecommunications…
Serves public-sector bodies, utilities and private-sector contractors on highways, drainage, water mains and telecommunications infrastructure projects, as a main contractor or subcontractor.
Financial Health
StrongStrong · Hiring · 11% CAGR over 4y
Location
Aspect Business Communications Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides managed IT and telecoms services for businesses, including remote helpdesk support, network infrastructure installation, fibre and broadband connectivity, VoIP phone systems, cybersecurity…
Serves businesses and organisations with internal user bases, targeting directors, company secretaries, office managers and operational leads responsible for IT, telecoms, connectivity, print and…
Financial Health
WeakWeak · 0% CAGR over 4y
Location
Morecom Ltd
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable
Location
TWISTED PAIR TECHNOLOGIES LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDesigns and installs data and communication network infrastructure including Cat5e/Cat6 cabling, fibre optic networks, wireless links and Wi‑Fi systems. Also provides CCTV, access control, telephone…
Serves businesses and public sector organisations, including contractors, councils, hospitals, hotels, schools, IT companies and industrial sites across the UK.
Financial Health
WeakWeak · -12% CAGR over 4y
Location
NTEC (BRISTOL) LIMITED
Trajectory
5y · 2021–NowFinancial Health
Insufficient historyInsufficient history
Location
MIDAS TELECOM SOLUTIONS (SW) LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides managed IT support, telecoms and broadband services for businesses. Offers cloud systems and Microsoft 365 support, cybersecurity services, network cabling and infrastructure, web and…
Serves businesses of all sizes and public/not-for-profit organisations, with sector focus on education, legal, local government, healthcare, real estate, financial, media, manufacturing and retail…
Financial Health
HealthyHealthy · Hiring · 6% CAGR over 4y
Location
A.S.M Networks Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides network infrastructure installation and support services, including structured data cabling, fibre optic cabling, Wi‑Fi network setup and maintenance, electrical installations, audio‑visual…
Serves businesses and organisations across the UK with sites or projects requiring network infrastructure, data cabling, fibre, Wi‑Fi, electrical, AV, CCTV and security support.
Financial Health
DistressedDistressed · 0% CAGR over 4y
Location
One Vision Digital Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides installation, maintenance and repair of TV aerials, satellite systems and communal television distribution systems, including IRS, SMATV and IPTV. Also installs TV wall mounts and data…
Serves homeowners and residential property owners, plus businesses and housing providers including offices, hotels, pubs, gyms, universities, student accommodation operators and public housing…
Financial Health
StrongStrong · Growing, Hiring · 5% CAGR over 4y
Location
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How Cardiff Broadband companies work and how to sell to them
What they do
Revenue usually comes from a mix of monthly connectivity charges, installation fees, router or customer-premises equipment supply, support retainers and wholesale margin. Business access and landlord-led schemes are often contracted around a site, building or small estate, with pricing tied to bandwidth, service level and the amount of civils or cabling work needed. Consumer-facing offers tend to be lower-ticket and more volume-dependent, while managed internet access for offices, public sites and mixed-use property gives operators more room to charge for monitoring, fault handling and account management.
Who they sell to
Typical buyers are practical budget holders: IT managers at SMEs, estates and facilities teams, property managers, housing providers, local public bodies and procurement leads acting on behalf of several premises. Simple broadband resale can move through direct sales or inbound enquiries, but access works, communal buildings and public-sector sites usually require site surveys, wayleave discussions and documented service commitments. The commercial buyer may care about price and contract term; the technical buyer tends to test uptime, installation risk, failover options and who owns the fault when wholesale, cabling and support obligations meet.
What they buy
Most Cardiff broadband firms tend to spend on tools and services that keep installation, support and recurring billing under control. Common buying areas include CRM, quote-to-order workflows, billing and direct-debit collection, ticketing, field-service scheduling, network monitoring, asset records, stock control, cybersecurity, accounting and management reporting. Operators with build exposure may also need legal support for wayleaves, subcontracted civils capacity, health and safety advice, call handling, recruitment for engineers and customer-support staff, and help documenting service levels for landlords or public-sector procurement.
Why and how to sell to them
Buying intent often appears when a provider wins a landlord or public-sector contract, adds installation capacity, moves from pure resale towards more network control, or starts to feel support pressure from a growing customer base. Pain points are usually operational rather than abstract: missed appointments, unclear fault ownership, cash tied up in installs, churn after outages, or margin squeezed by wholesale costs. Outbound angles work better when they attach to those triggers, such as reducing repeat site visits, improving provisioning visibility, evidencing service-level performance, shortening invoice cycles or making procurement documents easier to complete.
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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