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Systems Integration Companies in Portsmouth: 36 Active Firms (2026)
Systems integration companies in Portsmouth connect software, data and infrastructure across business systems for local and regional organisations.
Buying centres tend to sit with operations, finance, IT and service-delivery teams rather than a single software owner. Portsmouth providers are usually competing for implementation, interoperability, migration and support work where several business systems, data flows and networked assets have to keep working during change. The customer base is mainly business-to-business, weighted towards mid-market and larger organisations across the South Coast and wider UK. Engagements are more often project-and-retainer relationships than transactional fixes: requirements mapping, configuration, testing, cutover support and post-live maintenance all matter, as does the ability to work alongside incumbent software suppliers and in-house IT teams.
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Portsmouth has 36 actively trading systems integration companies, giving the city a compact supplier base rather than a broad regional cluster. Reported employment stands at 539 people, which points to a market with some delivery capacity but limited depth if several large implementation programmes come to market at once. The local pattern fits the South Coast buyer profile: implementation partners close enough for workshops, site access and support escalation, while still able to deliver work for clients elsewhere in the UK. For researchers, the useful reading is less about headline company volume and more about capacity, account ownership and the availability of specialist skills inside a small local field.
Procurement scrutiny is likely to be concentrated on information security, access governance, continuity planning and liability allocation, because integration work usually touches operational systems rather than isolated applications. Mid-market and larger buyers tend to ask for evidence of change control, incident handling, subcontractor oversight and support availability before allowing a supplier near production environments. Market structure also matters: local providers may sit between national software vendors, telecoms carriers, cloud hosting partners and the customer’s internal IT team. That makes contracting, scope ownership and handover discipline as important as technical fit, especially where migration work affects billing, fulfilment or customer-service workflows.
Demand appears tied to integration debt rather than discretionary experimentation: ageing applications, fragmented reporting and supplier handovers keep creating work even when software budgets are tight. Portsmouth’s cohort looks more service-led than platform-led, so margin pressure may persist where projects are sold mainly on delivery capacity. Scale-up scarcity also suggests that acquisition by broader IT-services groups, partnership with national vendors or gradual specialisation by vertical workflow could be more common than breakout expansion. Buyers tend to favour continuity and known delivery teams, which may protect established local suppliers but makes it harder for very young firms to win complex production work.
36
Active firms
2026
3
Over £5M
revenue band
4
Recent incorporations
since 2022
Key facts
About 8% of the trading cohort reports turnover above £5M (3 of 36 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.
Systems integrators in Portsmouth typically connect software, data and infrastructure across enterprise applications, reporting layers and older operational platforms.
Local and regional buyers often use integration work to make existing systems exchange information rather than replace every application at once.
Delivery appears project-led, with specialist teams handling implementation and service businesses supporting integration after go-live.
Top Portsmouth Systems Integration companies
345 Technology Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides enterprise integration services on Microsoft Azure, connecting business applications and systems to automate data exchange and processes. Supports migration from legacy integration…
Serves enterprises and larger organisations with complex IT estates, especially Microsoft Azure users, businesses migrating from legacy integration platforms, and teams implementing major systems…
Financial Health
HealthyHealthy · Hiring · 49% CAGR over 4y
Location
Artemis Solutions Limited
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides custom software development services including system architecture, web and mobile applications, API integration, and AI prototyping. Also offers secure hosting, security testing, and…
Serves insurance and financial services businesses, especially enterprise brands and regulated organisations needing secure, compliant digital systems and long-term technical delivery partners.
Financial Health
HealthyHealthy · 0% CAGR over 3y
Location
SIGA Solutions Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides consulting and technical services for Microsoft Dynamics NAV and Dynamics 365 Business Central ERP systems, including implementation, upgrades, development, report writing, performance…
Serves companies using Microsoft Dynamics NAV, Dynamics 365 Business Central or Continia, including private and FTSE businesses across industries, plus Microsoft Partners supporting existing clients.
Financial Health
StrongStrong
Location
Bell Integration
Provides managed IT services and technology consulting, including cloud migration and optimisation, AI and AIOps implementation, cybersecurity, data centre and application migration, IT…
Serves enterprise and SMB organisations, including finance, banking, telecoms, insurance, travel, healthcare and government agencies, with customers across the UK, EU, Middle East and North America.
Location
TWISTEDPAIR LIMITED
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides design, installation and support of workplace technology infrastructure including audio‑visual systems, structured cabling, computer networks and data centre solutions, along with project…
Serves global technology integrators and enterprise businesses, working with IT, AV, infrastructure, project management, design-and-build and workplace teams across offices and data centre…
Financial Health
HealthyHealthy · Growing · 3% CAGR over 3y
Location
FEED4WARD CONTROL LTD
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides design, development and implementation of bespoke industrial automation control systems, including PLC, HMI, SCADA and DCS software. Also manufactures control panels, supplies automation…
Serves businesses in industrial manufacturing, particularly quality-regulated sectors such as pharmaceuticals, energy, and food and beverage, working with companies of varying sizes that need…
Financial Health
StableStable · -78% CAGR over 3y
Location
CARRERA (UK) LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides managed IT support and services for businesses, including service desk support, infrastructure and networking, Microsoft 365 and email management, cybersecurity services, cloud backups, VoIP…
Serves small and medium-sized businesses in Portsmouth, Southampton, Hampshire and across the South of England, including organisations needing managed IT, telecoms, Microsoft 365 and cyber security…
Financial Health
WeakWeak · -64% CAGR over 4y
Location
skyPurple Cloud Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides cloud computing consultancy for life sciences and biotechnology organisations, advising on multi‑cloud architecture, artificial intelligence integration, cloud cost optimisation, security,…
Serves B2B organisations in life sciences and biotech, targeting technical, data, security and operations teams responsible for cloud infrastructure.
Financial Health
HealthyHealthy · Hiring · 37% CAGR over 4y
Location
Matrix Business IT Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides managed IT services for businesses, including technical support, remote monitoring, cloud and Microsoft 365 migration, cybersecurity services, VoIP phone systems, data backup and recovery,…
Serves businesses in Hampshire, Dorset, Wiltshire and Sussex, including organisations needing outsourced IT support and those with in-house IT teams seeking technical collaboration.
Financial Health
StrongStrong · Hiring · 16% CAGR over 4y
Location
Interpro Technology Solutions Limited
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides managed IT support and consultancy for businesses, including network installation, server virtualisation, cybersecurity, cloud computing, Microsoft 365 management and backup services. Also…
Serves B2B organisations of all sizes in Portsmouth, Southampton, Fareham and Hampshire, including defence-sector clients, professional services firms and companies seeking an outsourced IT partner.
Financial Health
WeakWeak · 3% CAGR over 2y
Location
BLUETEQ LIMITED
Trajectory
5y · 2022–NowFinancial sub-scores
Computed from 5 filingsDevelops and supplies healthcare and business software, including NHS systems for high‑cost drug management, individual funding requests and case management. Also provides managed IT support,…
Serves NHS organisations, healthcare commissioners, trusts, GP federations and private businesses needing software, data, workflow and managed IT support services.
Financial Health
StableStable · Hiring · 6% CAGR over 4y
Location
BARTLETT CONSULTING AND INTEGRATION LIMITED
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsDesigns and integrates software systems for broadcasters and media companies, including addressable advertising platforms, media distribution infrastructure, and real-time data processing systems.…
Serves broadcasters, media service providers, advertising sales houses and organisations in mission-critical sectors such as energy that need real-time, media distribution or addressable advertising…
Financial Health
StrongStrong · -3% CAGR over 2y
Location
SILCHESTER CONTROL SYSTEMS LIMITED
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsDesigns and implements industrial automation and control systems. Provides electrical controls and instrumentation engineering, PLC and SCADA system integration, control panel design, industrial…
Serves industrial and public-sector organisations in pharmaceuticals, chemicals, energy, food and beverage, aviation, automotive, transport, infrastructure, environment, minerals and government…
Financial Health
HealthyHealthy · 3% CAGR over 3y
Location
THORN SDS LIMITED
Trajectory
1y · 2025–NowProvides managed IT services, secure platform engineering and technical support for space, defence and security projects. Supplies security‑cleared engineers and specialists for spacecraft…
Serves public-sector and prime-contractor clients in the space, defence and security sectors, including UK MoD, defence primes, ESA, EUMETSAT and European space prime partners.
Financial Health
Insufficient historyInsufficient history
Location
Lumico Digital Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides custom software development and IT consulting, including web and mobile application development, embedded systems engineering, industrial process automation, IoT solutions, cloud…
Serves B2B organisations with operational, production or platform requirements, including industrial manufacturers, engineering firms, agri-food operators, utilities, energy companies, SaaS ventures…
Financial Health
StrongStrong · Growing, Hiring · 20% CAGR over 5y
Location
ARCTA SOLUTIONS LTD
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides data capture and business intelligence solutions, integrating digital pen and IT systems to collect, process and analyse operational data. Develops customised software and integrations to…
Serves B2B organisations seeking to automate business processes and manage evolving IT systems, including teams with data capture, digital pen and business intelligence requirements.
Financial Health
StrongStrong · Growing, Hiring · 36% CAGR over 3y
Location
WESTLAKE INFORMATION TECHNOLOGY LTD
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides managed IT support and infrastructure services for businesses, including helpdesk support, remote monitoring and maintenance, cloud migration, Microsoft 365 and Azure deployment,…
Sells to businesses needing outsourced IT support, cloud, infrastructure and security services, including organisations with employee workforces and in-house systems. Serves UK companies, with a…
Financial Health
DistressedDistressed · -13% CAGR over 2y
Location
Dynamics Consultants Limited
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides implementation, integration, upgrades and support for Microsoft Dynamics 365 Business Central ERP systems. Delivers bespoke business software solutions, training and consultancy to integrate…
Serves UK SMBs needing ERP/business software, especially manufacturers, warehousing and distribution firms, including machine builders, heavy equipment, medical equipment, marine components, food and…
Financial Health
StableStable · 1% CAGR over 3y
Location
Reticom Ltd
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsDesigns, installs, and supports data and voice networking systems for businesses. Services include network cabling, wireless network deployment and surveys, IP CCTV systems, WAN emulation, network…
Serves businesses and organisations that need managed data networks, IP telephony, CCTV, wireless coverage and IT support, particularly those operating stand-alone or client-server network…
Financial Health
HealthyHealthy · 0% CAGR over 3y
Location
Cobweb
Provides managed IT services, cloud hosting and consulting focused on Microsoft technologies. Delivers Microsoft 365 and Azure management, cybersecurity, backup and disaster recovery, network…
Serves UK businesses and organisations, especially accountants, charities, construction firms, education providers, financial services, healthcare, insurers, law firms and manufacturers.
Location
BUSINESS THINKING LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides data engineering and business intelligence consultancy, including data strategy and architecture design, data warehouse and source system migration, testing services, and managed data…
Sells to businesses building or modernising data platforms, especially data, BI and analytics teams needing consultancy, training, managed services or migration support. Also serves data…
Financial Health
WeakWeak · Hiring · 7% CAGR over 2y
Location
NUBIS ASSOCIATES LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides IT and network consultancy and managed services, including VPN deployment, off‑site backup and disaster recovery, network and system design and builds, 24/7 monitoring, and VoIP telephony…
Serves B2B customers with bespoke networking and communications requirements, including internet service providers, communications providers, data centre operators and businesses from small offices…
Financial Health
HealthyHealthy · -87% CAGR over 4y
Location
ALVER SERVICES LIMITED
Trajectory
5y · 2022–NowFinancial sub-scores
Computed from 5 filingsDevelops bespoke business software and IT solutions, including application design and integration, system maintenance, process improvement consulting, and disaster recovery planning to help…
Serves businesses needing bespoke IT and software support, from startups developing new applications to established organisations and large corporates with existing systems and data processing needs.
Financial Health
WeakWeak · -73% CAGR over 4y
Location
7-6 Tech Ltd
Trajectory
4y · 2023–NowFinancial sub-scores
Computed from 4 filingsProvides managed IT and telecommunications services including IT support, Microsoft 365 management, internet connectivity, VoIP phone systems, Wi‑Fi networking, cyber security, and video…
Serves small businesses in Portsmouth and surrounding areas, including multi-site companies and firms with remote workers needing managed IT, telecoms, internet, networking and cyber security support.
Financial Health
WeakWeak · Hiring · 10% CAGR over 3y
Location
Shout Telecoms Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops telecommunications software and hardware for carrier and enterprise networks, including SIP softswitches, call recording, routing, IVR, conferencing and fraud detection systems. Provides…
Sells B2B to telecoms service providers, network operators and telecoms resellers, plus enterprises and government agencies. Targets buyers needing carrier-grade voice network solutions, call…
Financial Health
DistressedDistressed · -7% CAGR over 4y
Location
SCANSATION LTD
Trajectory
5y · 2022–NowFinancial sub-scores
Computed from 5 filingsProvides document capture and content management solutions, including deployment of Kofax Capture systems, scanner hardware supply, and related consultancy, development, installation, training and…
Serves private and public sector organisations in the UK and Europe, plus document capture distributors, partners and scanner manufacturers needing expertise in document, content and knowledge…
Financial Health
HealthyHealthy · Growing · 0% CAGR over 3y
Location
DATASYM (U.K.) LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides electronic point-of-sale (EPOS) systems and catering management software, including kiosks, meal ordering, kitchen display and mobile ordering tools. Also offers system integration,…
Serves B2B and public-sector buyers in hospitality, retail, healthcare, prisons, education and care settings, including business owners, facilities managers, managing directors, franchise catering…
Financial Health
StableStable · -90% CAGR over 2y
Location
Cobweb
Provides managed IT services and consultancy, including Microsoft 365 and Azure management, cloud migrations, cybersecurity, backup and disaster recovery, network connectivity, and business…
Serves UK organisations, including accountants, charities, construction firms, education providers, financial services, healthcare, insurance companies, law firms and manufacturers.
Location
CLEVERTOUCH CONSULTING LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides marketing technology consulting and implementation services. Advises on martech strategy, platform migration, data and analytics, and marketing automation. Also develops software tools and…
Serves B2B marketing leaders and teams in organisations with significant martech investments, including users of Adobe, Salesforce, Oracle and analytics platforms across global client bases.
Financial Health
DistressedDistressed · -17% CAGR over 2y
Location
Compsoft (UK) Ltd
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDesigns and develops digital products including mobile and web applications, IoT systems, robotics and spatial computing solutions. Provides UX/UI design, hardware and firmware development, AI and…
Sells to businesses developing digital products, especially enterprises and manufacturers needing bespoke AI, IoT, robotics, spatial computing and app solutions. Serves product, innovation and…
Financial Health
StableStable · -3% CAGR over 2y
Location
360CTRL Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides managed IT and cybersecurity services including cloud hosting, IT support, network infrastructure design and management, backup and disaster recovery, cyber awareness training, and incident…
Serves businesses and organisations with in-house IT gaps or outsourcing needs, including those seeking MSP/MSSP support, cyber resilience and cloud transition assistance.
Financial Health
HealthyHealthy · Hiring · 27% CAGR over 4y
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
IQUO LIMITED
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsDesigns and implements bespoke web applications and systems integration for the e‑insurance market, supporting online insurance quoting and sales platforms. Also provides consultancy and access to…
Serves UK insurance companies and intermediaries in the e-insurance market, plus insurance-sector organisations seeking specialist technical contractors and consultancy.
Financial Health
HealthyHealthy · Growing · 0% CAGR over 1y
Location
Auric Solutions Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides LabVIEW-based software development and systems integration for automated test, measurement, control and data logging. Develops custom applications, instrument drivers, data acquisition and…
Serves B2B engineering and technology companies that design, manufacture, test, control or monitor products and equipment, including telecommunications, marine, medical, automotive, aviation, space,…
Financial Health
DistressedDistressed · -16% CAGR over 4y
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
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
Exclusive Networks
Distributes and integrates cybersecurity and cloud infrastructure technologies from multiple vendors. Provides solution design, consulting, training, deployment, subscription management, logistics,…
Targets cybersecurity and cloud technology vendors, systems integrators, managed security service providers and value-added resellers in the IT channel, serving business buyers rather than consumers.
Location
M2M Cloud Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides Internet of Things (IoT) connected device solutions, integrating hardware, software and data analytics. Offers bespoke and plug‑and‑play systems including remote water monitoring, indoor…
Serves businesses and organisations seeking connected-device IoT deployments, particularly teams responsible for water safety, building management, indoor environments and asset tracking.
Financial Health
StrongStrong · Growing · 0% CAGR over 2y
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
Matrix Business Group Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides business IT services including managed and partially managed IT support, system monitoring, cloud computing, and hosted or on‑premise VoIP systems. Also offers IT consultancy and sourcing of…
Serves businesses across the UK, including professional services firms, retailers, e-commerce sites, charities, agencies, engineers, property firms, car dealerships, architects, designers,…
Financial Health
HealthyHealthy · 0% CAGR over 4y
Location
IP NRG SOLUTIONS LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides design, installation and support of integrated security technology systems, including IP CCTV, access control, visitor management, video analytics, drone detection, and smoke or fire…
Serves UK businesses and organisations with high-risk or mission-critical sites that need integrated physical security and IoT systems, including CCTV, access control, alarms and visitor management.
Financial Health
HealthyHealthy · Growing · 0% CAGR over 4y
Location
SCIDEAS LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides custom software development and IT services including CRM implementation and support (Salesforce, SugarCRM, SuiteCRM), web and mobile application development, website design, digital…
Serves B2B customers across education, e-commerce, finance, IT, life sciences, manufacturing, healthcare, real estate and non-profits seeking CRM, software development and outsourced IT support.
Financial Health
StableStable
Location
PIVALE LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides digital transformation and web development services specialising in Drupal-based websites and platforms. Designs and builds content‑managed sites, ecommerce systems, web applications,…
Serves B2B senior leadership and executive teams, especially enterprises using Drupal, across aerospace, arts and culture, food and drink, healthcare, manufacturing, renewables, retail, and tourism…
Financial Health
StrongStrong · Hiring · 14% CAGR over 4y
Location
WAAT LIMITED
Trajectory
4y · 2019–NowFinancial sub-scores
Computed from 4 filingsDevelops custom software and ICT systems, including AI and machine learning algorithms, web and mobile applications, user interfaces, and regulated medical device software. Provides design and…
Serves B2B and public-sector clients with complex ICT needs, especially medtech, diagnostics, healthcare and social-good organisations, plus teams requiring AI/ML, web systems or mobile app expertise.
Financial Health
HealthyHealthy · -2% CAGR over 6y
Location
PROTEUS BUSINESS SOLUTIONS LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides IT services including technical support, custom software and web development, cybersecurity, networking and broadband setup, web hosting and domains, IP telephony, and computer sales and…
Sells primarily to businesses needing IT support and software services, with a clear focus on retail organisations requiring back-office and POS systems. Also serves enterprise, hospitality,…
Financial Health
WeakWeak · -11% CAGR over 2y
Location
SUPPORT ON THE SPOT LIMITED
Trajectory
5y · 2022–NowFinancial sub-scores
Computed from 5 filingsProvides IT support, cybersecurity services, and technology consultancy for businesses. Supplies hardware, software licensing, cloud infrastructure, and networking solutions, and offers web…
Serves businesses and charities needing outsourced support across IT, cyber security, connectivity, digital marketing, web/eCommerce and design, including organisations managing Microsoft…
Financial Health
WeakWeak · Hiring · 9% CAGR over 4y
Location
SIGNALS AND SOFTWARE LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides managed IT services including IT support, equipment repair, lifecycle management, and infrastructure connectivity. Also refurbishes and remarkets IT hardware, installs Wi‑Fi networks, stages…
Serves small to large B2B organisations in logistics, construction and retail, including IT teams managing warehouses, stores and enterprise hardware estates across the UK.
Financial Health
StableStable
Location
Curatrix Holdings Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides managed IT support and communications services for businesses, including Microsoft 365 administration, cybersecurity monitoring, cloud backup and disaster recovery, hardware supply, and 24/7…
Serves small and mid-sized businesses and local organisations needing outsourced ICT support, Microsoft 365 management, cyber security and communications services, typically business owners or…
Financial Health
StableStable · -18% CAGR over 2y
Location
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How Portsmouth Systems Integration companies work and how to sell to them
What they do
Portsmouth systems integration firms usually make money from professional services rather than pure software ownership. Revenue tends to come through discovery workshops, implementation projects, migration work, interface development, testing, support retainers and occasional licence or hosting resale. Pricing is commonly a mix of fixed-fee phases, day-rate delivery and retained support, with more open-ended work handled on time-and-materials terms where the client’s estate is poorly documented. The commercial risk sits in scoping: integrators are paid to make existing systems talk to each other, but they also inherit dependency risk from customer teams, incumbent suppliers and ageing infrastructure.
Who they sell to
Customers are typically mid-market and larger organisations with several operational systems, multiple sites or a need to keep customer-facing workflows running during change. Buying groups tend to include an IT director, operations director, finance lead, service-delivery owner and procurement manager, with the CFO becoming more visible when integration work affects billing, reporting or cost control. Smaller support assignments can move through direct relationships, while migration and replacement programmes often involve formal proposals, supplier questionnaires and competitive tenders. Sales cycles tend to lengthen when access to production systems, cyber assurance and liability terms need approval before delivery begins.
What they buy
Most systems integration providers tend to spend on tools and services that protect utilisation, delivery quality and client trust. Common categories include CRM, proposal management, project accounting, resource planning, time recording, ticketing, documentation, test management, observability, security monitoring and access control. They may also buy cloud infrastructure, backup services, insurance, legal support, technical training, certification preparation, recruitment services and subcontractor capacity for specialist skills. The better sales angle is usually operational rather than abstract: helping delivery teams avoid rework, evidence change control, manage support queues, forecast consultant capacity or keep project margin visible before problems become write-offs.
Why and how to sell to them
Systems integration buyers tend to evaluate suppliers when delivery pressure exposes a gap: a new managed-support contract, a larger migration bid, client security requirements, staff churn, a new operations lead or a move beyond founder-led project control. Pain points often include scope creep, poor handover from sales to delivery, under-recorded project time, dependency on a few senior engineers and client demands for clearer reporting. Outbound works better when it recognises those constraints. Pitches framed around bid readiness, utilisation, audit evidence, support response, margin leakage or faster onboarding of technical staff are more credible than broad claims about digital change.
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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