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Utilities Companies in Southampton: 74 Active Firms (2026)
Utilities companies in Southampton provide essential energy, water, waste and related infrastructure services across the local metropolitan area.
Buying decisions tend to sit with facilities teams, estates managers, procurement leads and asset owners rather than a single technology budget. Southampton utilities suppliers typically sell into commercial property, local public services, housing, marine-linked sites and residential service routes, with work shaped by continuity requirements and site access. Engagements range from contracted maintenance and waste handling to recurring supply, metering support and network-adjacent operations. The cohort also spans lean owner-operated businesses and staffed operators, so sales cycles can vary from local framework participation to negotiated service contracts where compliance evidence, response times and insurance matter as much as price.
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Southampton has 74 actively trading utilities companies, making this a small local market rather than a broad regional cluster. Reported headcount across the cohort is 259 people, pointing to a service base made up largely of micro and small employers rather than labour-heavy infrastructure groups. Only 2 companies sit above £5M in turnover, while 18 were incorporated since 2022. That mix suggests a long tail of young contractors and local operators around a much smaller group of revenue-scaled businesses, with employment likely tied to maintenance, field service, customer operations and contracted delivery rather than headquarters functions.
Energy supply, generation, brokerage and network work are split across licensed and exempt activities, with OFGEM setting conduct, settlement and network-access expectations. Water and wastewater operators work under price-control, quality, leakage and resilience obligations; waste operators tend to need permits, duty-of-care processes and traceable handling routes. In Southampton, local-authority procurement also shapes parts of the market, especially street-level maintenance, waste handling and infrastructure support. The common thread is that many commercial relationships are not simple spot sales: eligibility, reporting, service continuity and site-safety requirements can determine who is able to bid.
Consolidation appears more likely in contracted operations and compliance-led service lines than in asset-heavy network ownership, where barriers to entry remain high. Smaller operators tend to compete on responsiveness, local access and specialist permissions, while scaled firms are better placed to absorb reporting burdens and insurance costs. Demand should remain tied to property management, public-service contracting, waste handling and energy-efficiency work rather than discretionary spending. Margin pressure may persist where contracts are retendered on price, although firms with recurring maintenance roles and demonstrable compliance processes should be less exposed than ad hoc service providers.
74
Active firms
2026
2
Above £5M
reported revenue
18
Recent incorporations
since 2022
Key facts
About 2% of the trading cohort reports turnover above £5M (2 of 74 firms) — the rest sits below that revenue band.
24% of the cohort was incorporated since 2022 (18 firms), so a sizeable share is in its first few filing cycles.
Southampton utilities suppliers sit close to household services, commercial property, port-linked activity and local infrastructure maintenance.
Energy, water, waste and related infrastructure services create a mixed buyer base across residential, property and infrastructure-maintenance work.
Very small operating teams in utilities work can point to subcontracted field delivery, outsourced maintenance or asset-owning structures.
Top Southampton Utilities companies
WSM Associates Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides water systems management services including pipeline commissioning, water hygiene risk assessments, sample collection, network modelling, leak detection, and maintenance of RPZ valves,…
Serves commercial organisations, local authorities, education institutions and cruise ship operators that manage water systems and need compliance, hygiene and pipeline support.
Financial Health
StableStable · 2% CAGR over 4y
Location
Solar Parto Tech Ltd
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
StrongStrong
Location
K.E.R Civil Groundworks Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed · 0% CAGR over 4y
Location
Bright Electrical Ltd
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak · 0% CAGR over 4y
Location
UK Newbie Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed · 0% CAGR over 4y
Location
DDSL Electric Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed · -16% CAGR over 4y
Location
INSTALLATION CONTRACT ENGINEERS LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed · -67% CAGR over 4y
Location
Utilita Energy
Provides pay-as-you-go gas and electricity supply to residential and business customers, with smart meter-based energy management via a mobile app. Also offers solar panel and battery storage…
Serves UK households, especially pay-as-you-go gas and electricity customers and homeowners considering solar, alongside businesses seeking energy supply or on-site solar options.
Location
ELEKTRATEX ENGINEERING LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides electrical engineering services for water and wastewater utility projects, including system design, installation and commissioning. Works on power distribution, control and automation,…
Serves B2B clients in the UK water industry, including water utilities and project teams working on clean water, wastewater, pumping and treatment facilities across Portsmouth and the South Coast.
Financial Health
StrongStrong · Growing, Hiring · 18% CAGR over 2y
Location
THE BLOGGS ENVIROMENTAL LTD
Trajectory
2y · 2023–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
HealthyHealthy · 0% CAGR over 1y
Location
Trajectory
1y · 2025–NowProvides engineering, procurement and construction services, including process, mechanical, electrical, instrumentation and civil design. Delivers automation and control systems, offsite…
Serves UK and overseas B2B and public-sector infrastructure clients, including water utilities, energy operators, nuclear organisations, defence bodies and industrial project owners managing capital…
Financial Health
Insufficient historyInsufficient history
Location
Trant Engineering
Provides engineering, procurement and construction services, including project management, process, mechanical, electrical and civil design, automation and control systems, offsite manufacturing, and…
Sells to B2B and public sector clients delivering major engineering and infrastructure projects, particularly in energy, process and water, nuclear and defence, in the UK and overseas.
Location
FARM GATE MANAGEMENT COMPANY LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed · 0% CAGR over 4y
Location
DYNAMIC DRAINS LIMITED
Trajectory
1y · 2024–NowFinancial Health
Insufficient historyInsufficient history
Location
RMS Waste Disposal Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak · -2% CAGR over 4y
Location
WATER LEAK LOCATION SERVICES LIMITED
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides water leak detection and location services for water utilities, including trunk main and distribution network leak identification, pipe integrity assessment, and field investigations. Also…
Serves UK and international water utilities, water companies, and organisations involved in water network leakage, including academia and technology companies undertaking leakage detection innovation…
Financial Health
StableStable · -4% CAGR over 1y
Location
Mark Allsopp Services Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy
Location
Solent Water Services Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable
Location
SOUTHAM WATER SYTEMS LIMITED
Trajectory
5y · 2022–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StrongStrong
Location
COMPLETE WATER SOLUTIONS UK LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · Hiring · 9% CAGR over 5y
Location
SCARLET WATER LTD
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
DistressedDistressed
Location
Waterforce UK Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StrongStrong · Hiring · 37% CAGR over 4y
Location
JJ Drainage Ltd
Trajectory
1y · 2025–NowFinancial Health
Insufficient historyInsufficient history
Location
Operates a group of technology and energy businesses. Activities include domestic energy supply, telecommunications and data management services, remote care monitoring technology, and provision of…
Serves both consumers and businesses through its portfolio brands, including households, energy customers and organisations of all sizes and sectors seeking technology, energy and renewables-related…
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
INFINERGY ADVANCED ASSETS LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDevelops and operates onshore wind energy projects. Co-developer and partner in the Alaska Wind Farm project, a four‑turbine installation generating renewable electricity for the grid and supplying…
Financial Health
StrongStrong
Location
ESSENTIAL H2O LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak · 0% CAGR over 2y
Location
MARLDELL WATER LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed
Location
WATER PROCESSING LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed · 0% CAGR over 4y
Location
HYDROSCAPE SYSTEMS LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed · 0% CAGR over 4y
Location
Brogle Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak · 0% CAGR over 2y
Location
ANDOVER SOLAR PARK LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak · -68% CAGR over 4y
Location
Arqiva
Operates broadcast and communications infrastructure for television and radio, including channel distribution, playout, streaming and transmission services. Provides satellite data communications and…
Serves broadcast and media companies, energy and water utilities, satellite operators, telecoms providers, mobility and energy firms, and military organisations in the UK and internationally.
Location
Arqiva
Operates broadcast and communications infrastructure providing TV and radio transmission, channel distribution, playout and streaming services. Also delivers satellite data communications and…
Serves broadcasters and media brands, UK and international utilities, and organisations needing satellite data connectivity, including energy and mobility companies, satellite operators, military…
Location
Arqiva
Provides communications infrastructure and data services for broadcast media and utilities. Operates television and radio transmission networks, satellite data communications, and connectivity…
Serves broadcasters and media brands, energy and water utilities, satellite operators, telecoms providers, military organisations, and energy or mobility companies in the UK and abroad.
Location
Arqiva
Operates broadcast and communications infrastructure providing television and radio transmission, media processing and distribution services, satellite data communications, and connectivity networks…
Sells to B2B and public sector customers in broadcasting, media, utilities, telecoms, mobility, satellite and defence, including TV and radio broadcasters, energy and water providers, satellite…
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
Provides broadcast transmission and media services for television and radio, including channel distribution, playout, streaming and broadcast infrastructure. Also operates smart metering and…
Serves broadcasters and media brands, energy and water utilities, satellite operators, telecoms providers, military organisations, and energy/mobility companies in the UK and internationally.
Location
Arqiva
Operates broadcast and communications infrastructure providing TV and radio transmission, channel distribution, media processing and OTT headend services. Also delivers satellite data connectivity…
Sells mainly to businesses and public sector organisations in broadcast media, utilities, satellite communications and telecoms, including TV and radio broadcasters, energy and water companies,…
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
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
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
Provides broadcast transmission and media services for television and radio, including channel distribution, playout and streaming. Operates smart metering and utility data networks, and delivers…
Serves B2B and public-sector customers in broadcast media, utilities, satellite, defence and telecoms, including TV/radio broadcasters, energy and water companies, satellite operators, military…
Location
C B JOINTING LIMITED
Trajectory
4y · 2020–NowFinancial sub-scores
Computed from 4 filingsProvides high-voltage (HV) and extra-high-voltage (EHV) cable jointing services, including installation, termination, inspection and repair of power cable systems. Supplies trained cable jointers and…
Serves electrical contractors, utilities, infrastructure project teams and solar farm operators needing HV/EHV cable jointing support, from one-off installations to larger jointing contracts and…
Financial Health
StableStable · 0% CAGR over 3y
Location
J JAMES UTILITIES LIMITED
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsFinancial Health
DistressedDistressed · -77% CAGR over 3y
Location
EWEBRAE WIND POWER LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak · -62% CAGR over 4y
Location
TURBYN INVESTMENTS LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak · -62% CAGR over 4y
Location
The Air Conditioning Showroom Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · 0% CAGR over 4y
Location
SHENTON GLOBAL LIMITED
Trajectory
4y · 2023–NowFinancial sub-scores
Computed from 4 filingsProvides backup power and energy resilience solutions, including generator rental, standby and prime generators, uninterruptible power supplies (UPS), and combined heat and power systems. Offers…
Serves organisations needing resilient power, including financial and commercial firms, healthcare providers, data centres and telecoms, manufacturers, retailers, education bodies, government/MOD,…
Financial Health
HealthyHealthy · -78% CAGR over 3y
Location
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How Southampton Utilities companies work and how to sell to them
What they do
Utilities companies around Southampton usually earn revenue from recurring supply, contracted operations, maintenance retainers, metering support, waste handling and network-adjacent services. Some act as asset owners or operators; others are service contractors, brokers or field-delivery businesses working around regulated assets. Pricing tends to mix standing charges, usage-linked fees, fixed service contracts and call-out charges, with penalties or service credits where continuity matters. The offer is rarely pure software or pure consultancy. It is usually a blend of field labour, compliance paperwork, vehicles, equipment, customer contact, site attendance and, in some cases, access to physical infrastructure or permitted handling routes.
Who they sell to
Most Southampton utilities suppliers sell to commercial landlords, facilities managers, estates teams, housing providers, marine-linked sites, public-service buyers and local residential routes. The buyer is often operational rather than technical: procurement leads check eligibility and price, while facilities or asset managers care about response times, proof of attendance, safety processes and continuity cover. Smaller jobs may come through direct relationships or call-offs from existing property and facilities contacts. Larger opportunities tend to involve framework access, tenders, negotiated service agreements or partner-led delivery through facilities-management and construction channels, with slower approval where insurance, permits and service-level commitments need review.
What they buy
Most utilities firms tend to spend on tools and services that keep field work scheduled, billed, evidenced and compliant. Relevant software categories include job management, route planning, CRM, billing, asset registers, metering workflows, document control, health-and-safety reporting, customer service, finance, payroll and workforce management. Service spend often sits around accountancy, insurance advice, legal support for contracts, certification, training, recruitment, fleet provision, equipment hire, waste documentation and audit preparation. Sellers should expect practical buying criteria: mobile access for field staff, low admin burden, clear records for disputes or inspections, and pricing that works for operators with mixed recurring and reactive revenue.
Why and how to sell to them
Utilities buyers tend to evaluate suppliers when operational pressure exposes gaps: a new maintenance contract, a public-sector tender, insurance renewal, permit review, route expansion, customer-service backlog, or a move from reactive work to recurring service agreements. Margin pressure from price-led retenders makes cost control relevant, but claims about savings need to be tied to missed visits, paperwork hours, billing leakage, fuel use or failed compliance checks. Outbound messages usually work better when anchored to contract delivery and risk reduction rather than generic growth. Evidence of sector familiarity, implementation support and audit-ready reporting will often matter before a buyer discusses price.
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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