Turn this list into pipeline.
Telecoms Infra Companies in Portsmouth: 42 Active Firms (2026)
Telecoms infrastructure companies design, build and maintain network assets for carriers, landlords and public bodies around Portsmouth.
Carrier procurement teams, property owners and construction-led estates functions tend to set the buying agenda, with public bodies appearing where connectivity is tied to campuses, transport corridors or civic assets. Typical work sits between design consultancy, civils coordination and managed maintenance rather than consumer-facing telecoms retail. Engagements are usually project-led at first — a fibre route, in-building upgrade, cabinet move or wireless backhaul package — then move into service contracts once assets need monitoring, repairs and capacity changes. Buyers look for access rights, field capability and familiarity with carrier standards, not just generic IT skills.
Read more
Portsmouth has 42 actively trading telecoms-infrastructure companies in this cohort, a relatively small local base for a city-level page. Their total reported headcount is 116 people, which points to a market weighted towards specialist contractors, engineering consultancies and owner-operators with limited administrative overhead. The local customer mix is likely to include carriers, landlords, construction contractors and public-sector estates, so revenue can be lumpy: delivery work follows project timetables, while maintenance and network operations offer more repeatable income where firms hold access rights or asset responsibilities.
Build and maintenance work is constrained by access, permissions and liability as much as by telecoms demand. Fibre routes, ducts, cabinets, masts and in-building systems need coordination with landlords, highways teams, utilities and principal contractors; delays often come from wayleaves, site access windows or reinstatement obligations rather than network design. Public-sector estates add procurement controls and security clauses, while carrier-facing work brings service-level commitments and documentation requirements. Around Portsmouth, the mix of commercial and public assets means firms with civils coordination and field scheduling capability tend to have a clearer role than pure sales agents.
Further development appears likely to favour operators that can combine field delivery with asset stewardship, because buyers tend to prefer fewer hand-offs once connectivity becomes business-critical. Newer entrants may still find room in survey, civils and installation work, but progression into recurring network operations has been harder without access rights, maintenance contracts or carrier relationships. Consolidation pressure is plausible where small contractors depend on the same landlords and construction pipelines. The local market therefore looks more service-led than platform-led, with resilience, documentation and response times mattering more than software-style product differentiation.
42
Active firms
2026
2
Above £5M
revenue band
12
Newer incorporations
since 2022
Key facts
About 4% of the trading cohort reports turnover above £5M (2 of 42 firms) — the rest sits below that revenue band.
28% of the cohort was incorporated since 2022 (12 firms), so a sizeable share is in its first few filing cycles.
Telecoms infrastructure work around Portsmouth centres on network assets for carriers, landlords and public bodies.
Local delivery tends to depend on access to engineers, permits and regional site relationships.
Typical work includes network upgrades, site maintenance and landlord-facing deployments rather than consumer-facing telecoms retail.
Top Portsmouth Telecoms Infra companies
RED PENGUIN ASSOCIATES LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides marine consultancy and subsea cable engineering services for offshore infrastructure projects. Advises on project strategy, planning, construction and asset management for submarine cable…
Serves B2B owners and developers of complex subsea cable systems, particularly in power transmission, telecoms, renewables, oil and gas, and wider marine infrastructure markets.
Financial Health
StableStable · -65% CAGR over 4y
Location
HWA Telecoms Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak · 0% CAGR over 4y
Location
VEREVO ASSETS LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides telecommunications infrastructure services for network operators and internet service providers, including civil engineering works, fibre optic cabling and splicing, and aerial installation…
Sells to telecoms network operators and internet service providers, serving B2B buyers involved in fibre and digital infrastructure rollout. Targets organisations delivering connectivity projects…
Financial Health
WeakWeak
Location
GIGATECH NETWORK SOLUTIONS LTD
Trajectory
5y · 2022–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · 0% CAGR over 2y
Location
Spotcom Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak · 0% CAGR over 4y
Location
RAFT SYSTEMS LIMITED
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides design, planning, installation and maintenance of radio and wireless telecommunications networks. Services include site surveys, line‑of‑sight radio links, rigging, rack builds, Ofcom…
Serves telecom operators, public-sector bodies and private organisations, including rail, healthcare, utilities, universities, local councils, airports, ports, defence, emergency services, broadcast…
Financial Health
HealthyHealthy · Hiring · 5% CAGR over 3y
Location
Butterworth Av Ltd
Trajectory
1y · 2024–NowFinancial Health
Insufficient historyInsufficient history
Location
Operates an international data network connecting Europe and Asia, providing IP transit, private networks, internet access, Ethernet and VPN connectivity, colocation, cloud interconnection, DDoS…
Serves B2B telecoms buyers, system integrators, ISPs and enterprises with offices, manufacturing, distribution or retail sites requiring international network connectivity across Europe and Asia.
Location
A.S.C Cableing ltd.
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak · 0% CAGR over 4y
Location
RRSE Engineering Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides engineering and technical services for telecom and IT infrastructure, including network installation, commissioning and integration, operation and maintenance of wireless networks,…
Serves B2B customers in telecoms, ICT and infrastructure, including wireless network operators, service providers, vendors and enterprises needing managed services, technical support, and power or…
Financial Health
StrongStrong · Growing · 0% CAGR over 5y
Location
FASTRACK FIBRE LIMITED
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides funding, project management, design, installation and connection of fibre optic broadband infrastructure. Delivers telecommunications network build and fibre connections to residential and…
Serves domestic and commercial property owners and occupiers across the UK, including rural communities, plus partners involved in telecommunications infrastructure projects.
Financial Health
HealthyHealthy
Location
TEC CONNECT LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides network infrastructure and connectivity services for businesses, including data and fibre optic cabling, business internet, audio‑visual and meeting room systems, CCTV and door entry…
Serves businesses across all sectors, particularly organisations needing office connectivity, meeting room, telephony, CCTV and network infrastructure support.
Financial Health
WeakWeak · -60% CAGR over 4y
Location
Geecko Networks Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed · 0% CAGR over 4y
Location
WILLOW TEC LIMITED
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides technical support services for telecommunications networks, including multi-vendor network support, network procurement and strategy consulting, telco cloud and orchestration support,…
Serves B2B telecoms organisations, network operators and technology-enabled enterprises that run RAN, core, fixed, transmission and IP networks, including clients requiring global telecom support and…
Financial Health
HealthyHealthy · Growing · 0% CAGR over 2y
Location
Reticom (Holdings) Limited
Trajectory
4y · 2023–NowFinancial sub-scores
Computed from 4 filingsProvides design, installation and support of data and voice network infrastructure, including wireless networks, structured cabling, IP CCTV systems and Mitel IP telephony. Also offers network…
Sells to businesses needing data and voice networking support, including IT and telecoms buyers seeking network cabling, wireless infrastructure, IP telephony, CCTV and ongoing support services.
Financial Health
WeakWeak · 0% CAGR over 3y
Location
GARRETTNET LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · 0% CAGR over 4y
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed
Location
SAQ LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StrongStrong
Location
COMMSIST LTD
Trajectory
2y · 2023–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
DistressedDistressed · 0% CAGR over 1y
Location
NETWORK RED LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak
Location
SAQ Administrative Services Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak · -20% CAGR over 4y
Location
TED CABLING COMMS LTD
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides installation and management of network infrastructure, including structured cabling, fibre optic systems, analogue phone systems, wired data points, and wireless access points. Also…
Serves small businesses, large enterprises and domestic customers across commercial, healthcare, hospitality and education sectors needing telecoms and network infrastructure support.
Financial Health
StrongStrong · Hiring · 347% CAGR over 2y
Location
MB Cabling Solutions Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides installation of structured data and voice cabling for IT and telecommunications networks in commercial buildings. Delivers cabling infrastructure projects ranging from small point…
Serves UK businesses needing data and voice cabling, from small organisations requiring limited installations to blue-chip clients and large building fit-out projects involving thousands of data…
Financial Health
WeakWeak · 0% CAGR over 2y
Location
I.C.E.E. Managed Services Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides engineering, fabrication and electrical contracting services, including design and manufacture of equipment enclosures, electrical installation, testing and commissioning, telecommunications…
Serves infrastructure operators, telecoms providers, transport and EV charging organisations, industrial clients, contractors and public-sector bodies in the UK and on selected global projects.
Financial Health
HealthyHealthy · 2% CAGR over 4y
Location
Optic Networx Solutions LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
WeakWeak · 0% CAGR over 2y
Location
BRADY AUTOMATION LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
StableStable · -90% CAGR over 2y
Location
P R Aerials Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed · 0% CAGR over 4y
Location
WESTERMO DATA COMMUNICATIONS LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDesigns and manufactures industrial data communication and networking equipment, including Ethernet switches, routers, gateways, wireless devices, media converters and fibre‑optic modems. Also…
Serves B2B industrial and infrastructure customers, including rail operators, energy utilities, maritime and offshore firms, water and wastewater organisations, and engineers responsible for…
Financial Health
WeakWeak · Hiring · 5% CAGR over 4y
Location
Unlock all 42 leads
Showing 28 of 42 — +14 more with verified decision-maker contacts, live data, and CRM sync.
How Portsmouth Telecoms Infra companies work and how to sell to them
What they do
Telecoms-infrastructure providers earn through a mix of survey fees, design packages, installation projects, civils coordination and ongoing maintenance. Pricing is usually tied to a statement of work: day rates for engineers, bill-of-quantities pricing for ducting or cabling, milestone billing for build programmes, and retainers where they monitor assets or respond to faults. Some operators also collect recurring income from owned or controlled fibre, mast, cabinet or in-building assets, but many Portsmouth firms are closer to specialist delivery businesses than asset-heavy network owners. Margins tend to depend on site access, subcontractor control, rework levels and how well field teams are scheduled.
Who they sell to
Buyers are usually carriers, landlords, commercial property managers, construction contractors, enterprise estates teams and public bodies with fixed or wireless connectivity requirements. Day-to-day sponsors tend to be network planners, estates directors, project managers, procurement leads, facilities heads and, for enterprise sites, IT or infrastructure leaders. Smaller remedial jobs may be bought through existing contractor lists, while campus upgrades, transport-adjacent work and multi-site rollouts more often involve tender packs, framework access or carrier procurement. Sales cycles are typically governed by permissions and build windows as much as budget approval, so vendors with evidence of field compliance and documentation discipline usually get further than generic service suppliers.
What they buy
Most telecoms-infrastructure firms tend to spend on tools and services that reduce field friction: job scheduling, fleet management, contractor onboarding, asset registers, network monitoring, ticketing, mapping, design documentation and customer reporting. They also buy accounting support, insurance advice, health-and-safety services, legal help for wayleaves and access agreements, and recruitment for surveyors, fibre engineers, civils supervisors and radio specialists. Cloud and cyber-security requirements are usually practical rather than decorative, centred on protecting drawings, access credentials, customer records and service logs. Test equipment, vehicles, PPE, training and depot space can matter as much as office software.
Why and how to sell to them
Telecoms-infrastructure buyers tend to evaluate suppliers when a carrier framework is won, a landlord portfolio expands, a maintenance contract starts, or a build programme moves from survey into delivery. Other triggers include repeated missed appointments, rising subcontractor spend, tighter service-level penalties, new health-and-safety requirements or a change in operations leadership. Outbound angles work better when they attach to a specific operational cost: fewer failed visits, faster handover packs, clearer proof of reinstatement, cleaner asset records or better utilisation of scarce field staff. Broad digital-modernisation language is less useful than evidence that a vendor can shorten delays between permission, site attendance and invoice.
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.
Also in Portsmouth
Related directories
Frequently asked questions
How many telecoms infra companies are there in Portsmouth?
What counts as a telecoms infra company in this list?
Which are the largest telecoms infra companies in Portsmouth?
What do telecoms infra companies in Portsmouth actually do?
How does Portsmouth telecoms infra compare internationally?
How is this list built and how fresh is the data?
How big are the typical telecoms infra companies in Portsmouth?
Are these mostly new or established telecoms infra companies?
What SIC codes does this use?
What buying signals should I look for?
Push these 42 companies into your pipeline.
Find the right decision-makers, see verified company data, and export your list in seconds.