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SaaS Companies in Southampton: 392 Active Firms (2026)
SaaS companies in Southampton sell subscription-priced cloud applications to businesses, with local exposure to UK GDPR and cloud-market rules.
Buying centres tend to sit in finance and revenue operations, sector-specific workflow teams, developer tooling and infrastructure management, rather than in a general software budget. Southampton suppliers in this cohort typically sell to business and public-sector customers with procurement cycles that involve IT, finance, security and the end-user department. Engagements appear commercially material rather than casual: recurring contracts, onboarding, support, renewal management and data-processing responsibilities matter as much as the cloud application itself. Buyer targets likely range from SMB departments to mid-market organisations, with some enterprise or regulated-client demand where UK security and privacy expectations shape vendor selection.
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Southampton has 392 actively trading SaaS firms in this list, a local cohort with a sizeable early-commercial tail. Reported headcount totals 1,208, and 122 reporting employers account for 100% of firms with staff returns. Scale is uneven: 6 companies report turnover above £5M, while 88 were incorporated since 2022. That combination gives researchers a market that is visible enough to segment, but still skewed towards smaller vendors, recent incorporations and firms whose commercial maturity will vary by contract base, implementation burden and the regulated-client exposure they take on.
UK SaaS suppliers are usually not licensed as a standalone sector, so regulatory exposure tends to follow the client's activity and the data being processed. Where software handles personal data, the ICO's UK GDPR guidance and Data Protection Act obligations matter; where it supports regulated customers, contract terms often import sector rulebooks, audit rights and security evidence. Cloud dependence adds a market-structure layer: the CMA has investigated UK public cloud infrastructure supply, found an adverse effect on competition and recommended strategic market status work for the main infrastructure platforms. That is competition scrutiny of the stack, not a SaaS-provider licensing regime.
Southampton's SaaS base appears likely to remain mixed: many vendors will stay close to service-led implementation, while the thinner scale-up layer tends to be shaped by repeatable onboarding, low-friction renewals and evidence of security control. Public-sector and regulated-client selling has been a useful discipline, but it can also lengthen procurement and favour suppliers with documentation, support processes and patient account management. Consolidation looks more plausible around narrow workflow tools and customer bases than around broad horizontal platforms. The local constraint is less product creation than sustained commercial distribution.
392
Active firms
2026
6
Above £5M
Southampton SaaS companies
88
Since 2022
Southampton incorporations
Key facts
About 1% of the trading cohort reports turnover above £5M (6 of 392 firms) — the rest sits below that revenue band.
22% of the cohort was incorporated since 2022 (88 firms), so a sizeable share is in its first few filing cycles.
UK SaaS suppliers are not generally licensed as a single sector; regulatory exposure usually comes through data protection, cyber security, consumer and contract law, and sector rules where clients are regulated.
The ICO is the relevant UK data-protection regulator for SaaS products that process personal data under UK GDPR and the Data Protection Act 2018.
The CMA closed its public cloud infrastructure services investigation on 31 July 2025 and reported an adverse effect on competition leading to remedies.
The International Trade Administration describes SaaS as one of the UK’s largest ICT markets and records about 100,000 software companies in the market.
Top Southampton SaaS companies
I2O WATER LTD
Trajectory
4y · 2021–NowFinancial sub-scores
Computed from 4 filingsDevelops and supplies intelligent water network technology for utilities, including pressure management systems, data logging devices and analytics software used to monitor, analyse and control…
Serves water utilities and water companies globally, including public and private network operators responsible for managing drinking water distribution, leakage reduction and supply performance.
Financial Health
StrongStrong · Hiring · 9% CAGR over 4y
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops cloud-based software for legal teams to create and manage electronic court bundles. Platform provides document upload, PDF editing, OCR, auto-numbering, indexing and secure sharing of case…
Sells B2B to legal teams and law firms of all sizes, particularly fee earners, litigation teams and practice operations staff involved in preparing court materials.
Financial Health
StableStable · 0% CAGR over 4y
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops software tools for migrating and managing files in Microsoft 365 environments, including utilities for transferring data to SharePoint Online and OneDrive for Business and mapping SharePoint…
Serves IT consultancies, managed service providers, SMBs and public sector organisations that use Microsoft 365, SharePoint Online and OneDrive for Business.
Financial Health
StableStable · -76% CAGR over 4y
Location
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides an online payroll management platform for contractors and agencies. Enables user registration, submission and approval of work hours, payslip access, payment notifications, and automated…
Serves contractors, temporary workers and agency workers who need payroll processing, alongside recruitment agencies or businesses managing contract assignments and worker payments.
Financial Health
WeakWeak · Hiring · 300% CAGR over 2y
Location
TWISS GREEN LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides education technology software and services for schools and multi‑academy trusts, including website design and hosting, communication tools for text and email, mobile apps, online learning…
Serves individual schools and Multi-Academy Trusts, particularly primary schools and academies, with buyers including headteachers, school leaders and administrative teams responsible for digital…
Financial Health
WeakWeak · Hiring · 19% CAGR over 4y
Location
TRADE HOUSE MEDIA LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides advertising technology platform for digital publishers, integrating ad server, header bidding (Prebid), auction management and analytics. Offers tools for inventory control, revenue…
Serves B2B digital publishers, media brands and enterprise publishing teams worldwide, including Adsense users, direct-sales publishers, restricted-content sites and organisations with complex…
Financial Health
HealthyHealthy · Hiring · 5% CAGR over 4y
Location
RED VOLCANO LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsDevelops data platforms for the advertising technology sector, providing tools to discover websites, mobile apps and CTV publishers. Services include crawled ad‑tag and traffic data, publisher…
Serves B2B customers in ad tech, including SSPs, ad networks, DSPs, agencies and publisher monetisation teams seeking publisher, app and ads.txt intelligence.
Financial Health
StrongStrong · Growing, Hiring · 38% CAGR over 5y
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops digital publishing software for book and journal publishers, including tools for eBook creation, manuscript styling, print‑to‑digital conversion and XML export, enabling production of PDFs…
Serves print and digital book publishers, magazine and journal publishers, editorial and production teams, and independent authors.
Financial Health
StableStable
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops digital publishing software for book and magazine publishers, including tools to convert manuscripts and print layouts into eBooks, PDFs and structured XML, manage document styling, and…
Targets B2B publishing organisations—print and digital book publishers, magazine and journal publishers—as well as independent authors and editorial or production teams within established publishers.
Financial Health
StableStable
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed
Location
BRAND 81 Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed · 0% CAGR over 4y
Location
UNCOMMON KNOWLEDGE GLOBAL MARKETING LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops AI-powered virtual try-on technology for fashion retailers, enabling customers to upload selfies and visualise clothing on their body. Provides tools for e‑commerce sites, digital showrooms…
Serves B2B fashion brands and apparel retailers, including ecommerce stores, digital showrooms and physical retail locations seeking virtual try-on experiences for shoppers.
Financial Health
StableStable · 0% CAGR over 4y
Location
Aab Consultants Ltd
Financial Health
Insufficient historyInsufficient history
Location
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
StableStable · 0% CAGR over 2y
Location
RIGHTSZONE LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy · 0% CAGR over 4y
Location
BLUEBOX SOFTWARE SOLUTIONS LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy · -66% CAGR over 4y
Location
Easypress Technologies Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed
Location
Eschedule Limited
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsFinancial Health
DistressedDistressed
Location
IDOCEO STUDIOS LTD
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsFinancial Health
StrongStrong
Location
SURUS CONSULTING LIMITED
Trajectory
2y · 2023–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
HealthyHealthy · 0% CAGR over 1y
Location
Shrimp Group Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StrongStrong
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak · -72% CAGR over 4y
Location
EXPOBEACON LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
DistressedDistressed · -86% CAGR over 2y
Location
Delright Limited
Trajectory
1y · 2025–NowFinancial Health
Insufficient historyInsufficient history
Location
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
DistressedDistressed · -42% CAGR over 2y
Location
C & C Holdings Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides cloud‑native software platforms, data services and managed operations for regulated utilities and healthcare sectors. Systems support electricity, gas and water market processes including…
Sells to B2B and regulated-sector organisations in the UK, including electricity DNOs, IDNOs, suppliers, agents and central bodies, gas network operators, water wholesalers and retailers,…
Financial Health
StrongStrong · Growing · 0% CAGR over 4y
Location
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides cloud-based software for estates and facilities management, fleet management, and risk management. Develops CAFM and IWMS applications on Microsoft Azure and offers custom software…
Serves private and public sector organisations needing estates, fleet or risk management systems, including multinationals, SMEs, universities, transport authorities, local government, NGOs and…
Financial Health
StrongStrong · Growing, Hiring · 7% CAGR over 2y
Location
Provides cloud-based global payroll processing, salary payment distribution, and pay‑on‑demand services for multinational employers. Offers managed payroll operations, payments management, and…
Serves midsize and multinational businesses with employees across multiple countries, selling to HR, payroll and finance teams seeking unified payroll, salary payments and earned-wage access…
Location
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides cloud-based software for customer service and contact centres, including AI-driven automation, omnichannel routing, voice services, workflow orchestration, workforce engagement management,…
Sells to businesses, from SMBs to large enterprises, that run customer service and contact centre operations. Targets CX, contact centre, operations and service teams across industries seeking AI,…
Financial Health
StableStable · 0% CAGR over 4y
Location
HUQ INDUSTRIES LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops location intelligence software that collects and analyses human mobility, footfall, demographic and spending data. Provides dashboards, reports and analytics used by retailers, real estate…
Serves B2B and public-sector decision-makers in local government, retail, real estate and financial services, including retailers, property firms, consultancies and banks.
Financial Health
StableStable · Hiring · 47% CAGR over 4y
Location
AML ANALYTICS LTD
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides RegTech and SupTech software and analytics for testing and validating sanctions screening and transaction monitoring systems. Offers benchmarking, risk analysis, and assurance testing tools…
Serves regulators, supervisors, central banks and governments, plus traditional and non-traditional financial institutions including banks, insurers and virtual currency exchanges worldwide.
Financial Health
StableStable · Hiring · 15% CAGR over 3y
Location
Develops and provides cloud‑based technology platforms for the insurance and automotive sectors, including claims management and first notification of loss systems, and delivers operational support…
Serves B2B customers including leading insurers, insurance brokers, fleet managers, automotive manufacturers and repair networks across motor and property insurance supply chains.
Location
VuePoint Solutions Ltd
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsDevelops and provides SaaS software for the energy sector, including tools for energy risk management, bill validation, tenant energy billing, and market data analysis, helping energy users,…
Sells B2B to organisations in the energy market, including major energy users, energy suppliers, consultants, generators and power traders.
Financial Health
StableStable · -5% CAGR over 5y
Location
CHARGEHIVE LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDevelops customer operations software for enterprise SaaS companies. The platform manages customer lifecycle processes including communications, marketing emails, support channels, payment processing…
Sells to B2B enterprise SaaS companies, especially high-growth and large-scale providers with hundreds of thousands to millions of customers, targeting teams responsible for customer operations,…
Financial Health
StableStable · -9% CAGR over 2y
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops cloud-based human capital management and workforce management software, including HR administration, payroll processing, time and attendance tracking, employee scheduling, analytics, and…
Sells to businesses of all sizes, from small teams to large enterprises, needing HR, payroll, and workforce management. Serves employers in healthcare, retail, hospitality, food service, public…
Financial Health
WeakWeak · Hiring · 16% CAGR over 4y
Location
TRANSALIS LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides cloud-based electronic data interchange (EDI) and e‑invoicing software that connects businesses with trading partners. Enables automated supply chain transactions, document exchange,…
Serves B2B organisations with complex supply chains, including retail, manufacturing, production, logistics and finance teams that need to connect with trading partners, suppliers, distributors and…
Financial Health
StableStable · Hiring · 4% CAGR over 4y
Location
ALLIANTS LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDevelops software and services for the hospitality industry, including a guest experience platform with messaging, concierge tools, contactless keys, payments, kiosks and guest apps. Also provides…
Serves hospitality businesses, especially boutique and luxury hotel brands and resort groups. Targets hotel departments and roles including front of house, concierge, sales, marketing, groups and IT…
Financial Health
StableStable · Hiring · 12% CAGR over 2y
Location
Develops cloud-based software for customer service and contact centres, including AI agents, automation tools, omnichannel routing, workforce engagement management, interaction analytics, and…
Sells to B2B customer service organisations: enterprise and SMB contact centres, CX leaders, operations managers, workforce teams and compliance teams across sectors managing high volumes of customer…
Location
Develops cloud-based customer experience and contact centre software. Provides AI-driven automation, conversational AI, voice and omnichannel routing, workforce management, analytics, and knowledge…
Serves enterprise businesses and contact centre operators, targeting customer service, CX, operations and workforce management leaders responsible for large-scale customer interactions.
Location
Provides technology platforms and operational support for the insurance and automotive sectors. Develops cloud‑based claims management systems and tools for first notification of loss, repair…
Serves B2B insurance markets, targeting insurers, brokers, fleet managers, automotive manufacturers and repair networks that manage motor, property and claims supply chains.
Location
Provides cloud-based global payroll processing and salary payment services for businesses. Offers managed payroll operations, cross‑border payments, pay‑on‑demand, compliance support, and…
Serves HR, payroll and finance teams at midsize and multinational businesses, including organisations using Workday, Oracle, HiBob and SAP SuccessFactors ecosystems.
Location
IDGATEWAY LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops software platforms for managing pre‑employment background checks and identity pass applications. Provides systems such as VettingGateway and AirportGateway to automate vetting workflows and…
Serves B2B organisations that vet applicants and manage ID pass applications, including airport operators, aviation employers, ID centres and HR/security teams across industries conducting in-house…
Financial Health
HealthyHealthy · -64% CAGR over 4y
Location
Sapio Sciences UK Limited
Trajectory
3y · 2024–NowFinancial sub-scores
Computed from 3 filingsDevelops laboratory informatics software for life sciences and diagnostics, including laboratory information management systems (LIMS), electronic lab notebooks, and scientific data management…
Serves life sciences organisations, including pharmaceutical and biotech R&D teams, clinical diagnostics labs, CROs, CDMOs, and regulated manufacturing and QC laboratories.
Financial Health
StrongStrong · Growing, Hiring · 44% CAGR over 2y
Location
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDevelops software applications for public and private sector organisations, including GDPR compliance tools and cloud‑based case management systems for DoLS and LPS processes, with features such as…
Serves public- and private-sector organisations needing GDPR DPIA compliance, plus health and social care supervisory and responsible bodies managing DoLS and LPS cases.
Financial Health
WeakWeak · 0% CAGR over 2y
Location
42Markets Group Holding Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsOperates as a holding company overseeing subsidiaries that develop and provide cloud‑based software platforms for banks and financial institutions, supporting trade processing, treasury operations,…
Targets banks, insurers and other financial institutions, particularly trade, treasury, IT and risk decision-makers in financial and capital markets.
Financial Health
StrongStrong · Growing, Hiring · 15% CAGR over 2y
Location
I-WONDER AGGREGATOR SERVICES LIMITED
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsDevelops software and integration services for insurance price comparison platforms. Provides quote and buy portals, broker quote systems, and connectivity tools linking brokers and insurers to major…
Serves B2B customers in the UK insurance market: price comparison sites and aggregators, brokers, insurers and partners across personal and SME commercial insurance classes.
Financial Health
StrongStrong · Growing, Hiring · 10% CAGR over 3y
Location
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsDevelops and supplies electronic health record (EHR) software and healthcare management systems for hospitals, clinics and public health services, including modules for patient records, pharmacy,…
Serves healthcare providers and public health organisations, including hospitals, GP practices, clinics, community care teams, mental health services, pharmacies, labs, imaging centres and specialist…
Financial Health
StableStable · 1% CAGR over 4y
Location
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides hosted voice and SIP trunking services, enabling businesses to manage telephone numbers and route calls through cloud platforms. Offers telephony integration with collaboration tools such as…
Serves UK businesses and organisations using hosted voice, SIP trunking and cloud telephony, particularly those migrating calling into Microsoft Teams or Webex and existing customers moving from…
Financial Health
StableStable · 0% CAGR over 5y
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops data analytics and optimisation software for commercial vehicle fleets, including tools for EV transition planning, route and tyre analysis, aerodynamics assessment, and vehicle trials,…
Sells to B2B customers in the commercial transport sector, including fleet operators, vehicle leasing firms, OEMs, tyre manufacturers, charging infrastructure providers, telematics companies and…
Financial Health
StrongStrong · Hiring · 63% CAGR over 4y
Location
Smarter Technologies
Trajectory
1y · 2020–NowProvides Internet of Things (IoT) technology and digital services, including hardware, software and communications networks for asset tracking, smart building management, and energy, water and…
Serves public sector bodies and private businesses, including councils, leisure operators, marinas, building managers, utilities, and military/defence organisations.
Financial Health
Insufficient historyInsufficient history
Location
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How Southampton SaaS companies work and how to sell to them
What they do
Revenue usually comes from recurring cloud subscriptions, with pricing set by seat, usage, module, customer tier or a mix of these. Southampton SaaS suppliers often add onboarding, configuration, training, support and integration work where the application touches customer systems or regulated workflows. That makes the commercial model less like a one-off software sale and more like a managed relationship: product access, service levels, data responsibilities and renewal risk sit together. Gross margin tends to depend on how repeatable implementation becomes, how much support is needed after go-live and whether product teams can turn customer-specific requests into reusable functionality.
Who they sell to
Typical customers are business departments, mid-market operators, public-sector teams and regulated buyers that need software to sit inside existing processes. The economic buyer is often a CFO, COO, CTO, Head of Procurement or departmental lead, with security and legal teams joining once personal data, integrations or audit rights are involved. Smaller deals may move through founder-led sales or self-serve trials, while larger accounts tend to require direct sales, demonstrations, proof-of-concept work and procurement review. Contract values vary by user base and workflow importance, so qualification should test whether the software is a budgeted system of record or a narrower productivity tool.
What they buy
Most Southampton SaaS firms tend to spend on the operating stack needed to sell, run and support recurring software. Common categories include CRM, billing and subscription management, customer success tooling, support desk software, product analytics, security monitoring, identity management, observability, cloud infrastructure, data warehousing and finance systems. Earlier-stage vendors may prioritise outsourced accounting, legal, web analytics, paid acquisition and recruitment help; more mature firms usually add procurement controls, contract management, penetration testing, compliance advice and customer education. Sellers should expect technical buyers to ask how any new tool integrates with existing systems and whether it reduces work for engineering, finance or support teams.
Why and how to sell to them
SaaS buyers tend to evaluate vendors when recurring revenue becomes harder to administer manually, churn analysis becomes too slow, security questionnaires start delaying deals or implementation work ties up product and engineering staff. Leadership changes, new public-sector bids, regulated-client wins, overseas customer demand and a move from founder-led sales to account management can all create buying windows. Useful outbound angles are usually operational rather than aspirational: shorten time to invoice, reduce renewal leakage, improve security evidence, cut support load, make onboarding repeatable or give managers clearer account-level reporting. Claims need to survive scrutiny from commercial and technical stakeholders.
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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