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Systems Integration Companies in Brighton: 37 Active Firms (2026)
Systems integration companies connect software, hardware and data workflows for business clients across Brighton and its metropolitan area.
Buying centres usually sit inside operations, IT and finance functions, where buyers need existing applications, infrastructure and data flows to work across departmental boundaries. Sales are usually project-led, with managed support attached once the integration layer is in production. The most natural customers are mid-market business clients and larger organisations needing specialist delivery capacity, rather than consumers or very small firms buying break-fix IT support. Engagements tend to sit between advisory work and outsourced operations: implementation, migration, API connectivity and workflow automation, followed by support contracts that keep linked systems running.
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Brighton has 37 actively trading systems integration firms in this cohort, making it a specialist local market rather than a broad national hub. Reported employment totals 442 people, which points to a services base built around delivery teams rather than one-person consultancies. The local pattern is likely to favour relationship-led procurement across the South East, with buyers using nearby suppliers for implementation work that still needs face-to-face discovery, testing and post-launch support.
No single UK regulator licences systems integration providers, so obligations usually follow the client environment rather than the supplier category itself. GDPR and ICO guidance matter when projects involve personal data, particularly during migration, API connectivity and workflow automation. Contracts also tend to carry the practical rules: access controls, audit trails, incident reporting, service availability and change-management procedures. For researchers, the market structure is therefore less about formal authorisation and more about whether providers can document delivery controls in sectors where buyers face their own compliance duties.
Brighton’s systems integration market appears mature and service-led, with relatively few signs of very new formation and a limited pool of turnover-scale operators. That points to incremental change rather than a rush of new entrants. Demand is likely to remain tied to legacy replacement, cloud migration and workflow automation, but local providers may find margins shaped by larger consulting groups on complex work and by low-cost remote delivery on simpler tasks. The more defensible specialists tend to be those embedded in client operations, where switching supplier would disrupt support knowledge as well as technical connectivity.
37
Active firms
2026
3
Above £5M
reported revenue
1
New incorporation
since 2022
Key facts
About 8% of the trading cohort reports turnover above £5M (3 of 37 firms) — the rest sits below that revenue band.
2% of the cohort was incorporated since 2022 (1 firms), so a sizeable share is in its first few filing cycles.
Brighton systems integrators usually sit between software vendors, infrastructure providers and client operations teams, joining applications, devices and data flows.
Project work, managed integration and continuing support are the main service lines for business clients across Brighton and its metropolitan area.
The local market appears more consultancy-led than product-led, with delivery teams often working across client operations and existing technology estates.
Top Brighton systems integration companies
YOUR IT TEAM LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides IT consulting, website and web application development, software and app development, systems integration, cloud services, UX/UI design, and ongoing technical support for businesses,…
Serves B2B organisations of varying sizes, including companies in construction, engineering, design, digital, healthcare and hospitality, as well as agencies seeking a technical partner for client…
Financial Health
StableStable · -16% CAGR over 2y
Location
WARP TECHNOLOGIES LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides software consultancy and development of bespoke CRM, case management and business applications. Implements Microsoft Dynamics 365 and Power Platform solutions, low‑code apps, data analytics…
Sells to businesses and organisations seeking Microsoft-based digital transformation, including teams in sales, marketing and customer service. Targets buyers needing CRM, case management, low-code…
Financial Health
HealthyHealthy · -66% CAGR over 4y
Location
Trident Computers (UK) Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides IT support and managed services including network design, installation and maintenance, cloud migration and hosting, Microsoft 365 and Azure solutions, cybersecurity, disaster recovery,…
Serves SMEs, estate agents, privately owned businesses and schools needing outsourced or supplementary IT support, cloud and network expertise, particularly around Brighton and Sussex.
Financial Health
StrongStrong · Growing, Hiring · 12% CAGR over 4y
Location
GENE COMMERCE LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides e‑commerce development and consulting services focused on Adobe Commerce (Magento). Designs, builds, integrates and supports online retail platforms, offering platform implementation, custom…
Serves ambitious retail and ecommerce brands, including B2C and B2B merchants using or considering Adobe Commerce and Magento platforms.
Financial Health
StableStable · -67% CAGR over 4y
Location
DIM 365 LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides consultancy and implementation services for Microsoft Dynamics 365 ERP and CRM systems, including sales, marketing, field service, HR and PowerApps modules, along with system design,…
Serves B2B organisations seeking Microsoft Dynamics 365 implementations, including companies needing ERP/CRM support across finance, sales, customer service, marketing, field service, HR and…
Financial Health
StableStable
Location
SPREZZATURA LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDevelops custom database applications and integrated software systems using Revelation Software tools and related technologies. Provides development and support for data management solutions,…
Serves B2B clients across varied industries, especially organisations using Revelation Software/OpenInsight systems that need specialist database development, integration and support.
Financial Health
WeakWeak · 0% CAGR over 2y
Location
BE DATA SOLUTIONS LIMITED
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides data consulting and technology services including data strategy, data engineering, analytics and data science. Also develops software, business intelligence systems, and business process…
Serves B2B organisations of varying sizes and data maturity, targeting business leaders and stakeholders responsible for customer and internal data, analytics investment, technology platforms and…
Financial Health
DistressedDistressed · -26% CAGR over 3y
Location
RITTMAN ANALYTICS LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides data analytics consulting services including design and implementation of data platforms, data warehouse and BI architectures, and embedded analytics. Works with organisations to modernise…
Serves B2B scale-ups and growing organisations with in-house data teams, including SaaS vendors and businesses using modern data stack tools such as Looker, dbt, BigQuery and Cube.
Financial Health
DistressedDistressed · -6% CAGR over 2y
Location
MOBILE CLOUD LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides consultancy and implementation services for generative AI and intelligent automation. Develops agentic process automation platforms, delivers AI‑enabled automation projects, and supports…
Serves enterprise buyers pursuing AI, automation and cloud transformation, including industry leaders and organisations needing large-scale advisory, implementation and global delivery support across…
Financial Health
WeakWeak · -3% CAGR over 4y
Location
IT SIMPLIFIED LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides managed IT support services for businesses, including maintenance of computers, servers and networks, cybersecurity management, cloud services, VoIP systems, online data backup, and 24/7…
Serves businesses needing outsourced IT support, especially companies with limited in-house IT expertise, across Sussex, Surrey, Kent, London and the wider UK, including firms with multiple or…
Financial Health
StableStable · -71% CAGR over 4y
Location
Cloud Fundamental Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides Amazon Web Services (AWS) consulting and implementation services, including cloud migration, secure infrastructure design, Amazon Connect contact centre setup, and ongoing support and…
Serves businesses and public sector organisations using or migrating to AWS, especially teams responsible for secure cloud infrastructure, compliance, optimisation and Amazon Connect contact centres.
Financial Health
StrongStrong · Growing, Hiring · 26% CAGR over 4y
Location
ANGRY CREATIVE (UK) LIMITED
Trajectory
2y · 2023–NowFinancial sub-scores
Computed from 2 filingsProvides web development services specialising in WordPress and WooCommerce. Designs, builds, migrates and manages websites and e‑commerce platforms, including CMS migrations, system integrations,…
Serves B2B organisations with complex web estates, including multi-entity companies, international e-retailers, wholesalers, retailers, and businesses providing web shops for their own customers.
Financial Health
DistressedDistressed · -11% CAGR over 1y
Location
SWITCHPLANE LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides custom software engineering and AI consulting services, designing and building business software and applications for SMEs. Implements automation and data‑driven tools to improve operations,…
Serves owner-managed businesses and SMEs across the UK, particularly in manufacturing, construction and insurance, with buyers seeking operational, customer service, sales and employee-experience…
Financial Health
StableStable · 0% CAGR over 2y
Location
Surface Impression Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides digital consultancy and production for cultural and nonprofit organisations, including website and application development, system integrations, online exhibitions, accessibility audits,…
Serves charitable, cultural, educational and other nonprofit organisations. Targets museums, heritage bodies and similar mission-led institutions needing digital, data and accessibility support,…
Financial Health
WeakWeak · -9% CAGR over 4y
Location
TEAM AUDIO LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides professional audio and communication systems, including wireless intercoms, network infrastructure, CCTV, and FM transmission. Supplies, configures and installs equipment such as Riedel…
Serves organisations running live events, venues, rehearsals, webcasts and drive-in productions that need professional audio, wireless communications, CCTV or FM transmission support.
Financial Health
StrongStrong · Growing, Hiring · 11% CAGR over 5y
Location
TCM IP SERVICES LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides consultancy, design, deployment and maintenance of smart building and IT infrastructure systems, including building management systems, enterprise networks, connectivity, cloud services,…
Serves B2B organisations with smart working environments, particularly commercial building occupiers, facilities teams and project stakeholders needing connectivity, managed IT and smart building…
Financial Health
DistressedDistressed · 18% CAGR over 1y
Location
COMPUTER EYEZ (SOUTH) LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides managed IT support and outsourced IT services for businesses, including network management, cloud IT support, cybersecurity monitoring, hosted VoIP phone systems, and Microsoft 365 support…
Serves businesses and non-profits across the South East, including accountants, construction firms, charities, financial services, healthcare, insurance, law, manufacturing and small businesses.
Financial Health
StableStable · -2% CAGR over 4y
Location
KELVERION AUTOMATION LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDevelops software and provides consulting for IT automation using Microsoft platforms such as Azure Automation, System Center Orchestrator, Power Automate and Logic Apps. Offers tools to trigger,…
Serves B2B IT operations, service management and AIOps teams in organisations using Microsoft Azure, System Center, Power Automate, Logic Apps and related enterprise tools.
Financial Health
DistressedDistressed · 0% CAGR over 1y
Location
FENTON I.T LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides managed IT support services for businesses, including helpdesk support, cyber security, Microsoft 365 administration, IT infrastructure management, connectivity solutions, and planning and…
Serves small businesses and organisations across Sussex, including firms without dedicated IT departments and in-house IT teams needing external IT support.
Financial Health
HealthyHealthy · Growing, Hiring · 6% CAGR over 4y
Location
South East Business Systems Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides managed IT support and consultancy for small businesses, including remote helpdesk, system monitoring, cybersecurity protection, Microsoft 365 support, cloud hosting, data backup and…
Serves small and medium-sized businesses, with local emphasis on Sussex, that need outsourced IT, cybersecurity, cloud, Microsoft 365, VoIP and remote helpdesk support.
Financial Health
StableStable · -18% CAGR over 2y
Location
Modular Connected Solutions Ltd
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDesigns and installs data cabling, network infrastructure, and audio‑visual systems for businesses. Integrates data, voice, and AV technologies into communications platforms, delivering projects such…
Targets B2B organisations, especially motor retail groups and car dealership networks, plus education, healthcare and other businesses, working with property, facilities and IT teams on site projects.
Financial Health
StableStable · Hiring · 9% CAGR over 2y
Location
Silver Lining
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides business IT and telecommunications services including VoIP phone systems, contact centre platforms, mobile services, cloud computing, managed IT support, network connectivity, and…
Serves businesses of all sizes across the UK and Europe, including organisations with IT, telephony, contact centre, mobile, connectivity and cybersecurity needs, with content aimed at growing UK…
Financial Health
HealthyHealthy · Hiring · 4% CAGR over 4y
Location
MULTIPLEXX TECHNOLOGIES LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides enterprise mobility services including staging, configuration and management of Zebra mobile devices and printers. Supports deployments with device management platforms, network integration,…
Serves B2B organisations in healthcare, transportation and logistics, manufacturing, and retail, particularly operations and IT teams managing enterprise mobile device and printing estates.
Financial Health
StableStable · Hiring · 11% CAGR over 4y
Location
Northstar Technology Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides managed IT support and helpdesk services for businesses, including cybersecurity, cloud infrastructure, hardware and software supply, network setup and IT consulting. Offers monitoring,…
Serves small and medium-sized businesses needing outsourced IT support across Sussex, Kent, Hampshire, Surrey and London, including firms without in-house IT teams.
Financial Health
StableStable · Hiring · 3% CAGR over 4y
Location
CHALKLINE SOLUTIONS LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides managed IT services including infrastructure management, IT support, cybersecurity, cloud migration and consulting. Implements and manages Microsoft 365, Azure and other cloud technologies,…
Serves B2B organisations needing outsourced or supplementary IT support, including businesses with Microsoft 365/Azure environments, cloud infrastructure and cybersecurity-sensitive operations.
Financial Health
StrongStrong · Growing, Hiring · 6% CAGR over 5y
Location
KELVERION UK LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDevelops software tools and provides consulting for IT automation using Microsoft platforms. Offers products such as Automation Portal, Runbook Studio and integration modules to trigger, manage and…
Serves IT operations, service management and infrastructure teams in organisations using Microsoft Azure Automation, System Center Orchestrator, Power Automate, Logic Apps or PowerShell.
Financial Health
WeakWeak · 0% CAGR over 2y
Location
Deltabit It Limited
Trajectory
4y · 2023–NowFinancial sub-scores
Computed from 4 filingsProvides managed IT support, IT consultancy, and cybersecurity services for businesses. Offers helpdesk support, network and communications infrastructure management, Apple Mac support, workflow…
Serves UK businesses needing managed IT and cybersecurity support, with emphasis on regulated or compliance-led sectors including finance, construction, healthcare, retail/e-commerce, logistics,…
Financial Health
WeakWeak · Hiring · 5% CAGR over 3y
Location
ALBION BUSINESS COMPUTERS LTD
Trajectory
5y · 2019–NowFinancial sub-scores
Computed from 5 filingsProvides managed IT services including IT support, cybersecurity, broadband connectivity and business telecoms. Also offers cyber assurance, technology management, and IT recycling and secure asset…
Serves UK organisations of all sizes, including businesses, schools and charities, with examples spanning design studios and dental practices, from local Sussex organisations to growing teams…
Financial Health
WeakWeak · Hiring · 4% CAGR over 6y
Location
Nebula Technology Solutions Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides managed IT support and outsourced IT services for businesses, including cybersecurity, Microsoft cloud and Microsoft 365 management, disaster recovery and business continuity, IT…
Serves growing SMEs and established companies, particularly organisations in regulated industries, needing outsourced IT, cybersecurity, cloud and digital support across the UK.
Financial Health
HealthyHealthy · 0% CAGR over 2y
Location
INGENIO TECHNOLOGIES LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides managed IT support and outsourced IT services for businesses, including network management, cyber security monitoring, cloud IT support, hosted VoIP phone systems, and assistance with…
Sells to businesses, particularly small companies and organisations needing outsourced IT support and cybersecurity. Targets sectors including accountancy, construction, charities, financial…
Financial Health
StableStable
Location
Interfuture Systems Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides managed IT support and technology services for businesses, including network infrastructure, cloud solutions, cybersecurity, hardware supply and telephone systems, along with system…
Sells to small and medium-sized businesses needing outsourced IT and technology support, particularly professional practices and firms in sectors such as engineering, facilities services, quarrying…
Financial Health
StrongStrong · Growing, Hiring · 12% CAGR over 4y
Location
CRM TECHNOLOGIES LIMITED
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides marketing operations and marketing technology consulting services. Supports businesses with marketing automation, CRM and martech platform integration, data management, demand generation…
Sells to businesses needing marketing operations support, especially B2B marketing and sales teams using martech and CRM platforms. Targets organisations investing in marketing automation, ABM,…
Financial Health
WeakWeak · -11% CAGR over 3y
Location
ADVANTAGE CLOUD SOLUTIONS LTD
Trajectory
5y · 2019–NowFinancial sub-scores
Computed from 5 filingsProvides managed IT services, cloud and cybersecurity solutions for businesses, including outsourced IT support, Azure migration, Microsoft technology consultancy, network connectivity, managed…
Serves small and medium-sized businesses and organisations needing outsourced IT, cloud and cyber support, including law firms, education groups and automotive businesses using Microsoft-centric…
Financial Health
WeakWeak · Hiring · 51% CAGR over 4y
Location
Main Systems Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides IT services including system management, technical support, hardware and software maintenance, IT outsourcing and helpdesk operations. Also delivers data destruction and degaussing,…
Serves B2B enterprises and corporate organisations needing outsourced IT support, maintenance, infrastructure, networking, POS, deployment and helpdesk services.
Financial Health
HealthyHealthy · -6% CAGR over 4y
Location
5RIT Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides business IT support and managed services including custom software development, hosted Microsoft Exchange email, cybersecurity protection, cloud telephony, wireless networking and CCTV…
Sells to businesses needing outsourced IT support, cloud communications, cybersecurity and compliance services, including companies with heightened security requirements and firms seeking hosted…
Financial Health
StrongStrong · Hiring · 5% CAGR over 3y
Location
Total Computer It Services Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides managed IT support and technical services for businesses and educational organisations, including cybersecurity, web and email filtering, VoIP and cloud telephony, connectivity solutions,…
Serves schools and other education organisations alongside small and mid-sized businesses seeking an outsourced IT partner, with buyers likely to include school administrators, business owners and…
Financial Health
StrongStrong · Growing, Hiring · 13% CAGR over 2y
Location
MCL Software & It Limited
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsProvides business telecommunications and IT services including mobile plans, business broadband, cloud‑hosted phone systems, IoT/M2M connectivity via multi‑network SIMs, and office Wi‑Fi and…
Serves UK businesses needing communications and IT support, including office-based teams and organisations with mobile workers or IoT/M2M connectivity needs.
Financial Health
HealthyHealthy · 0% CAGR over 1y
Location
Focus Group
Provides business technology services including VoIP phone systems, IT support, cloud computing, cybersecurity, connectivity, mobile services, and energy procurement. Also delivers Microsoft…
Serves B2B and public sector organisations, from small businesses and SMEs to global enterprises and charities. Targets buyers across industries including automotive, hospitality, estate agency,…
Location
VIPER IT GROUP LIMITED
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides managed IT services including technical support, network and systems management, cybersecurity, cloud and communications solutions, and remote support. Assists businesses with IT projects,…
Serves small and mid-sized businesses, including professional services firms such as solicitors, and targets business owners, IT managers and office managers needing external IT support and cover.
Financial Health
StrongStrong · Growing, Hiring · 17% CAGR over 2y
Location
MAS Networks Ltd
Trajectory
5y · 2022–NowFinancial sub-scores
Computed from 5 filingsProvides managed IT services including installation, support and consultancy. Supplies broadband, VoIP, Wi‑Fi, cabling, backup and hosted services, plus mobile telephony and managed print. Supports…
Serves small and medium-sized businesses, particularly in retail, hospitality, education and care, plus organisations seeking outsourced IT and telecoms support from a single supplier.
Financial Health
StrongStrong
Location
MCL Telecommunications Group Ltd
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides business telecommunications and IT services including mobile tariffs, business broadband, cloud phone systems, IoT/M2M SIM connectivity, WiFi and network setup, and IT support. Also installs…
Serves UK businesses needing office communications and connectivity support, including mobile, broadband, cloud phone, IT, IoT/M2M, WiFi and networking services for office-based teams and mobile…
Financial Health
StrongStrong · Growing, Hiring · 8% CAGR over 3y
Location
HERO IT SUPPORT LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides managed IT support services for businesses, including remote and onsite technical support, Microsoft 365 and SharePoint migrations, VoIP deployment, cybersecurity and antivirus, backup…
Serves businesses across multiple industries seeking outsourced IT support, with flexible buying models for organisations that prefer per-user, per-device, per-hour or per-ticket arrangements.
Financial Health
HealthyHealthy · Growing · 0% CAGR over 4y
Location
OVERLINE IT LIMITED
Trajectory
5y · 2022–NowFinancial sub-scores
Computed from 5 filingsProvides business IT and telecommunications services including VoIP phone systems, business broadband, mobile services, Microsoft 365 licensing, cloud infrastructure, IT support, CCTV systems and…
Serves UK businesses needing office IT, telecoms and cloud communications, including teams using Microsoft 365, office phone systems, broadband, business mobiles, remote working tools and CCTV.
Financial Health
StableStable
Location
PSYCHOLOGY FIRST CONSULTANCY LIMITED
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides business technology services including VoIP phone systems, unified communications, IT support, cloud computing, cyber security, connectivity, and mobile services. Also offers energy price…
Sells to organisations of all sizes, from small businesses and SMEs to global enterprises, plus public sector bodies, private sector firms and charities. Targets buyers across industries including…
Financial Health
StrongStrong · Growing · 0% CAGR over 3y
Location
RPM Business Communications Limited
Trajectory
5y · 2019–NowFinancial sub-scores
Computed from 5 filingsProvides business telecommunications and IT services including VoIP phone systems, broadband and leased-line connectivity, cloud computing, Microsoft 365 solutions, cybersecurity, mobile services and…
Sells to businesses in the UK, from small firms and SMEs to enterprises, across sectors including automotive, hospitality, estate agency, leisure and entertainment, recruitment and retail.
Financial Health
HealthyHealthy · Hiring · 5% CAGR over 4y
Location
I 2 I MEDIA LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops video and digital technology solutions including online screening platforms, internet TV systems, live webcast services, and display technologies. Also provides bespoke software development,…
Serves organisations needing video, display and digital platforms, from Hollywood studios and boutique media companies to charities and smaller businesses, with clients across multiple continents.
Financial Health
StableStable · -3% CAGR over 4y
Location
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How Brighton systems integration companies work and how to sell to them
What they do
Systems integration firms usually earn through fixed-scope implementation projects, time-and-materials delivery, discovery workshops and recurring support retainers. Revenue can also include licence resale or referral margin, although the core margin is normally in consulting time, configuration, testing and post-launch support rather than software ownership. Work is shaped around integration architecture, data migration, custom connectors, automation, security controls and user acceptance testing. Brighton providers in this segment are likely to win where clients want practical delivery capacity close enough for workshops and support, but specialist enough to sit between internal IT teams and larger consultancies.
Who they sell to
Most sell to mid-market and larger business clients with fragmented application estates, ageing infrastructure or departmental workflows that no longer match how the organisation operates. Buyers typically include CTOs, IT directors, operations directors, finance leaders and heads of transformation, with procurement becoming more involved when the work affects core systems or personal data. Sales are usually direct and consultative, often starting with an audit, migration brief or failed internal project. Partner-led referrals also matter, especially where an application vendor needs local implementation capacity. Buying cycles tend to stretch when integrations touch finance, customer records or operational continuity.
What they buy
Most systems integration firms tend to spend on tools and services that help them scope work, control delivery risk and support clients after go-live. Relevant categories include CRM, proposal management, professional services automation, time recording, ticketing, documentation, remote monitoring, security testing, identity and access management, backup, analytics and billing. They also buy cloud infrastructure, development environments, insurance, legal support for master services agreements, accountancy, recruitment and technical training. Hiring needs often centre on project managers, integration engineers, data specialists and support analysts, so suppliers that can reduce bench risk or improve utilisation may find a clearer angle.
Why and how to sell to them
Systems integration buyers tend to evaluate vendors when project volume rises, fixed-fee margins come under pressure, support tickets outgrow informal processes, or larger clients ask for better audit trails and service reporting. Other triggers include a new managed-services offer, senior delivery hires, a move into regulated client sectors, or repeated handover problems between implementation and support teams. Outbound messages are usually more credible when tied to delivery economics: fewer write-offs, clearer project visibility, faster onboarding of engineers, cleaner client reporting and lower operational risk. Generic digital-transformation language is less useful than evidence that a supplier understands utilisation, change control and client-side procurement.
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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