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SaaS Companies in London: 16,000+ Active Firms (2026)
SaaS companies in London sell subscription-priced cloud applications to businesses and public-sector teams across the capital.
Finance, revenue operations, vertical workflow and platform teams tend to be the main buying centres, rather than a single central software buyer. Sellers usually target mid-market and enterprise organisations, with public-sector teams in scope where procurement and hosting requirements can be met. Engagements are typically subscription contracts wrapped with onboarding, configuration, account management and retention monitoring. The better-fit suppliers look less like one-off app developers and more like operating software businesses: hosted products, recurring income, support processes, customer success routines and responsibility for business data. Regulated and data-sensitive customers also push vendors towards clearer security evidence, implementation discipline and contract terms that survive buyer scrutiny.
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London has 16,709 actively trading SaaS companies, making the capital a large and fragmented market rather than a short list of scaled vendors. Reported headcount across the cohort totals 5,724, which points to a narrow employment base relative to the company count and a long tail of micro-businesses, consultancies with recurring products and early-commercial software suppliers. Scale is uneven: 342 firms report more than £5M of turnover, while 5,777 were incorporated since 2022. That combination suggests recent formation remains an important part of the market, but the revenue-ranked upper tier is much smaller than the headline firm count.
UK SaaS suppliers are not licensed as a single sector, so regulatory exposure follows the job the software performs and the type of customer it serves. The ICO is the central reference point where products process personal data, with UK GDPR obligations shaping retention, processor terms, breach handling and customer due diligence. Cyber security, consumer and contract law, and sector-specific rules also matter when applications support regulated clients. Cloud dependency adds a market-structure issue: the CMA has scrutinised public cloud infrastructure services and reported competition concerns with remedies, which may affect procurement leverage and hosting choices without turning ordinary SaaS provision into a licensing regime.
London's cohort appears tilted towards early-commercial and specialist suppliers, with a smaller group moving into larger employer and turnover bands. Buyer scrutiny is likely to keep favouring vendors that can document security controls, implementation practice and retention evidence, particularly for regulated or data-sensitive workloads. At the same time, cloud-infrastructure competition remedies may alter hosting economics at the margin rather than rewriting the supplier landscape. Consolidation tends to look more plausible around vertical workflow tools and compliance-heavy niches, where products become embedded in operational processes and switching costs are higher.
16,709
Active firms
2026
342
Above £5M revenue
London SaaS companies
5,777
Incorporated since 2022
London SaaS companies
Key facts
About 2% of the trading cohort reports turnover above £5M (342 of 16,709 firms) — the rest sits below that revenue band.
34% of the cohort was incorporated since 2022 (5,777 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 tends to arise through data protection, cyber security, consumer and contract law, and sector-specific rules where software serves regulated clients.
The ICO is the relevant UK data-protection regulator, and SaaS providers processing personal data must consider UK GDPR and Data Protection Act 2018 obligations.
The CMA closed its public cloud infrastructure services case on 31 July 2025, reported an adverse effect on competition leading to remedies, and recommended strategic market status investigations into the two largest cloud infrastructure providers.
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.
The International Trade Administration describes the UK as the second largest ICT market by ICT spending per head, after the US.
Top London SaaS companies
Raidiam Services Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides SaaS platforms and services for managing secure data sharing via APIs, including trust directories, PKI infrastructure, OAuth authorisation servers, AI‑driven access control, and conformance…
Sells to businesses, governments, regulators, central banks and industry consortia building secure API and open data-sharing ecosystems, especially in financial services, digital identity and…
Financial Health
StrongStrong · Growing, Hiring · 40% CAGR over 4y
Location
BUSINESS SYSTEMS LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides enterprise communications and contact centre technology including cloud contact centre platforms, conversational AI automation, compliant call recording, communications archiving, workforce…
Serves B2B and public sector organisations with contact centres and regulated communications needs, including financial services, government, blue light services, utilities, retail, housing, and…
Financial Health
StableStable · -13% CAGR over 5y
Location
Insightful Technology Limited
Trajectory
4y · 2023–NowFinancial sub-scores
Computed from 4 filingsDevelops software and services for data compliance and risk management, including data mapping for privacy requests, enterprise information archiving, trade surveillance, communications recording,…
Serves compliance, risk and data governance teams in highly regulated sectors, including financial services, legal, insurance, crypto, pharmaceuticals, healthcare, recruitment, public sector and…
Financial Health
HealthyHealthy · Hiring · 40% CAGR over 3y
Location
Buckhill Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops and supplies core insurance software platforms for insurers, brokers and managing general agents. Products support policy administration, claims management, billing, underwriting,…
Serves B2B insurance organisations, including Lloyd’s and London Market syndicates, carriers, MGAs, brokers, and global insurers needing core operational platforms and market-specific technology.
Financial Health
StrongStrong · Growing, Hiring · 12% CAGR over 4y
Location
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides a data security platform that monitors SaaS applications and AI tools to detect sensitive information, manage data security posture, enforce data loss prevention policies, and automate…
Serves B2B enterprise security and IT teams, including CISOs, in organisations using SaaS and AI tools, with sector focus on HR, insurance, healthcare and fintech.
Financial Health
StrongStrong · Hiring · 19% CAGR over 3y
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides cloud‑based software for managing individual regulatory compliance in financial services. The platform supports regimes such as SMCR, BEAR and SEAR, enabling organisations to track…
Serves global financial services organisations, especially banks and regulated firms, targeting compliance, governance, accountability and risk teams responsible for SMCR, SEAR, BEAR, IAF, IAC and…
Financial Health
HealthyHealthy · Hiring · 4% CAGR over 4y
Location
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides a subscription software platform delivering data, news and analytics on global debt markets. Uses AI to analyse bonds, loans, covenants and deal activity, supporting banks, investors and…
Serves B2B credit-market professionals globally, including banks, buyside investors, advisors and law firms, with users in origination, sales and trading, restructuring, securitization and private…
Financial Health
StrongStrong · Hiring · 87% CAGR over 5y
Location
Artificial Labs Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops software platforms for the specialty and commercial insurance market, providing digital tools for underwriting and broker placement. The technology supports insurers and brokers with…
Serves B2B specialty and commercial (re)insurance markets, targeting brokers, carriers and insurers involved in placement, underwriting and specialty risk transfer.
Financial Health
HealthyHealthy · Hiring · 13% CAGR over 4y
Location
Trajectory
4y · 2023–NowFinancial sub-scores
Computed from 4 filingsProvides cloud-based software for managing authorised signatory lists, bank mandates and authorised trader records. The platform digitises approval authorities, maintains audit trails, and enables…
Sells to businesses, especially large global enterprises, serving company secretariat, corporate treasury, trading and compliance teams that manage authorised signatories, bank mandates and trader…
Financial Health
StableStable · Hiring · 28% CAGR over 3y
Location
Juro Online Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides cloud-based contract lifecycle management software that enables teams to draft, review, negotiate, approve, sign and store contracts. The platform uses AI to analyse and redline documents,…
Serves legal, HR, procurement, sales and finance teams at scaling businesses, especially B2B SaaS and marketplace companies such as food delivery, auto and travel platforms.
Financial Health
StrongStrong · Hiring · 54% CAGR over 4y
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops cloud-based software for managing clinical workflows and patient pathways across healthcare services. Provides tools for referral management, trauma coordination, procedure planning,…
Serves healthcare providers across primary and secondary care, including hospitals, clinical teams, operational staff and specialty services managing patient pathways, referrals, trauma, dermatology,…
Financial Health
HealthyHealthy · Hiring · 21% CAGR over 4y
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides a cloud‑native SaaS platform for data protection and cyber recovery. Offers backup, ransomware recovery, data governance, eDiscovery and compliance tools for enterprise workloads, public…
Serves enterprise IT, security and compliance teams that manage cloud, SaaS, endpoint and hybrid infrastructure, plus managed service providers and channel partners delivering data protection…
Financial Health
StableStable · Hiring · 7% CAGR over 4y
Location
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDevelops and provides cloud-based recruitment and talent management software. Platform includes applicant tracking, candidate relationship management, career sites, onboarding, learning, performance…
Serves enterprise HR, talent acquisition and workforce management teams across sectors including automotive, finance, healthcare, higher education, life sciences, public sector, retail, RPO,…
Financial Health
StableStable · Hiring · 60% CAGR over 2y
Location
SNAPLOGIC UK LIMITED
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsDevelops a cloud-based integration platform that connects applications, data sources, and APIs. Provides tools for data integration, ETL/ELT, API management, and workflow automation, with pre-built…
Sells to enterprise IT, data and business teams across manufacturing, retail, financial services and higher education, plus ISVs, MSPs and OEM/embedded providers.
Financial Health
HealthyHealthy · Hiring · 39% CAGR over 3y
Location
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsDevelops cloud-based practice management and electronic health record software for private healthcare providers. The platform includes patient records, telehealth, appointment scheduling, billing and…
Serves private healthcare providers, from solo practitioners and clinics to corporate, occupational health and enterprise organisations, across primary care, secondary care, mental health, allied…
Financial Health
StrongStrong · Growing, Hiring · 36% CAGR over 4y
Location
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides software platform for API management including open‑source API gateway, analytics, developer portal and dashboard, enabling organisations to design, publish, secure, monitor and scale APIs…
Sells to enterprise technology and platform teams, plus public sector organisations, in sectors including financial services, telecoms, travel, manufacturing, education, ecommerce and construction…
Financial Health
StableStable · -58% CAGR over 5y
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides APIs that connect banks and fintechs to small business accounting, ERP and financial systems, enabling secure data sharing, automated financial data collection, spend insights, and…
Sells to enterprise financial institutions—banks, fintechs, issuing banks, B2B payments providers and business lenders—that serve small and middle-market business customers.
Financial Health
StrongStrong · Growing, Hiring · 15% CAGR over 4y
Location
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsDevelops and sells software for managing, protecting and governing cloud collaboration platforms, particularly Microsoft 365 and SharePoint. Products include SaaS backup, data security, migration,…
Serves organisations using Microsoft, Google and Salesforce SaaS platforms, including public sector, education, financial services, energy, manufacturing, professional services and retail, plus MSPs,…
Financial Health
HealthyHealthy · Hiring · 13% CAGR over 1y
Location
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides cloud-based AML, KYC and KYB compliance software that automates customer onboarding, identity and business verification, risk assessment, sanctions and PEP screening, and reporting,…
Serves businesses with AML obligations, particularly accounting firms, law and conveyancing practices, real estate firms and financial services organisations, including compliance and onboarding…
Financial Health
StrongStrong · Hiring · 21% CAGR over 2y
Location
Policy in Practice Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops data analytics and software tools for public sector and social organisations, including benefits calculators, income tracking, and safeguarding data platforms. Also provides social policy…
Serves local authorities, housing providers, utilities, financial services firms, charities and public-sector policymakers, plus individuals seeking benefits support, focused on people facing…
Financial Health
StrongStrong · Growing, Hiring · 17% CAGR over 4y
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops regulatory compliance software for asset managers, hedge funds, banks and other financial institutions. The platform automates monitoring of investment rules, shareholding disclosures,…
Serves compliance teams at asset managers, hedge funds, investment banks, pension funds and other financial institutions, from smaller firms to large global organisations managing regulated…
Financial Health
HealthyHealthy · Hiring · 18% CAGR over 4y
Location
PEPPERMINT TECHNOLOGY LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsDevelops cloud-based software for law firms, including CRM, matter and case management, and client engagement tools built on Microsoft 365. Provides implementation and support services to help legal…
Targets large law firms, including internal marketing, business development, lawyer and legal operations teams, with buyers responsible for client engagement and matter management systems.
Financial Health
HealthyHealthy · Hiring · 6% CAGR over 4y
Location
Matrix Booking Limited
Trajectory
4y · 2021–NowFinancial sub-scores
Computed from 4 filingsDevelops workplace management software that enables organisations to book desks, meeting rooms and other resources, manage visitors, monitor occupancy through sensors, and analyse workspace usage…
Serves public-sector and enterprise buyers, including central and local government, NHS, universities, legal, utilities, insurance, retail, manufacturing, construction, housing associations and…
Financial Health
HealthyHealthy · Hiring · 31% CAGR over 3y
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops cloud-based workspace management software that enables organisations to book desks and meeting rooms, manage visitors and car parking, integrate with workplace systems, and analyse office…
Sells to SMEs, large enterprises and public-sector organisations managing hybrid workplaces, including aerospace and defence, government, healthcare and corporate real estate teams.
Financial Health
WeakWeak · -3% CAGR over 4y
Location
BROMCOM COMPUTERS PLC
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDevelops cloud-based management information and finance software for education institutions. Provides systems for pupil data management, school administration, accounting, parent and student portals,…
Serves education-sector organisations, including primary and secondary schools, multi-academy trusts, SEND and all-through schools, maintained schools, local authorities and school finance or…
Financial Health
StrongStrong · Profitable
Location
Trajectory
2y · 2023–NowFinancial sub-scores
Computed from 2 filingsProvides a cloud-based platform for preparing corporate reports, enabling teams to collaborate on financial and sustainability reporting with version control, data integration, and iXBRL tagging to…
Serves finance, sustainability and corporate reporting teams at listed or regulated organisations, plus design agencies supporting annual, ESG and regulatory reporting.
Financial Health
HealthyHealthy · 0% CAGR over 1y
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops software for tax automation, regulatory reporting and digital financial reporting. Provides a platform and services for preparing and submitting compliance reports, including VAT and…
Serves large enterprises and listed companies, especially FTSE finance, tax and regulatory reporting teams, plus financial services firms operating across multiple jurisdictions.
Financial Health
WeakWeak · 1% CAGR over 4y
Location
Q-Solution Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides cloud-based software and platform services including secure messaging and secure email, along with managed testing services. Supports public sector digital transformation through…
Targets UK public sector organisations, including government bodies running digital transformation programmes and technology teams requiring security-cleared suppliers aligned to Cloud First policy.
Financial Health
StableStable · -3% CAGR over 4y
Location
Trajectory
2y · 2023–NowFinancial sub-scores
Computed from 2 filingsProvides a cloud-based network and software for electronic invoicing and automated exchange of business documents between companies and government platforms. Offers AP/AR automation, system…
Serves B2B organisations and public sector bodies, especially finance, tax, AP/AR and procurement teams in healthcare, manufacturing and multinational enterprises with e-invoicing and transaction…
Financial Health
WeakWeak · Hiring · 44% CAGR over 1y
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides a financial research platform that aggregates macroeconomic and financial market data from multiple sources and offers tools for analysis, charting, visualization, and report creation used…
Serves B2B financial and economic research users at hedge funds, investment banks, asset managers, research institutions, pension funds and corporations, including economists, strategists and traders.
Financial Health
StrongStrong · Growing, Hiring · 44% CAGR over 4y
Location
SMARTRECRUITERS LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides cloud-based talent acquisition software used by organisations to manage recruitment processes, including job posting, applicant tracking, candidate screening, interview scheduling, offer…
Serves mid-size and enterprise employers, targeting HR, talent acquisition, hiring, IT and finance teams with corporate, high-volume and professional hiring needs across sectors including healthcare,…
Financial Health
StrongStrong · Hiring · 43% CAGR over 4y
Location
BIZZDESIGN UK LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops enterprise transformation software delivered as a SaaS suite. Provides tools for enterprise architecture management, strategic and application portfolio management, business process and data…
Serves large enterprises and complex organizations worldwide, especially enterprise architecture, IT portfolio, governance, risk, compliance, business architecture and transformation teams aligning…
Financial Health
StableStable · -59% CAGR over 4y
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides a software platform for employers to manage employee benefits programmes, including flexible spending allowances, benefits enrolment, rewards and recognition, and total reward statements,…
Sells to HR, reward and benefits teams at global enterprises and multinationals managing complex employee benefits across countries, plus benefits brokers supporting employer clients.
Financial Health
StrongStrong · Hiring · 130% CAGR over 4y
Location
CELLPOINT DIGITAL HOLDINGS LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides payment orchestration and digital commerce platforms that connect payment service providers, acquirers and alternative payment methods. Enables airlines, travel companies and other merchants…
Sells primarily to enterprise travel businesses, especially airlines, hotels and other travel providers. Also serves retailers, e-commerce merchants and hospitality companies seeking payment…
Financial Health
DistressedDistressed · -68% CAGR over 4y
Location
Atominvest Software Ltd
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsDevelops software platforms for asset managers and private markets firms to manage investors, fundraising and fund operations. Provides tools for datarooms, electronic subscriptions, investor…
Serves B2B financial services clients, including private markets and asset managers, private wealth firms, banks, and asset management service providers such as placement agents, fund administrators,…
Financial Health
StrongStrong · Growing, Hiring · 59% CAGR over 3y
Location
Trajectory
4y · 2023–NowFinancial sub-scores
Computed from 4 filingsDevelops cybersecurity software for security operations, providing a platform that combines SIEM, network detection and response (NDR), automation and case management to detect cyber threats, analyse…
Serves MSSPs and in-house SOC/security teams in organisations with data residency needs, especially education, public administration, financial services, critical infrastructure, healthcare, retail,…
Financial Health
WeakWeak · -26% CAGR over 3y
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops cloud-based insurance management software built on Salesforce for brokers, MGAs and coverholders. The platform manages the insurance distribution lifecycle, including quoting, policy…
Sells to B2B insurance distribution firms, including insurance brokers, MGAs, coverholders, London Market participants and carrier/fronting operations.
Financial Health
StrongStrong · Growing, Hiring · 55% CAGR over 4y
Location
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsDevelops and supplies IT systems for public and voluntary sector health and support services, including case management and reporting platforms for substance misuse treatment, rough sleeping…
Serves public and voluntary sector organisations, including local authorities, substance misuse treatment providers, criminal justice teams, healthcare bodies and recovery charities.
Financial Health
StrongStrong · Growing, Hiring · 5% CAGR over 3y
Location
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDevelops data automation software used to design, build and manage data warehouses. Tools automate data modelling, code generation, documentation and pipeline orchestration, integrating data from…
Serves B2B data and analytics teams in enterprises, including education, financial services, healthcare and manufacturing organisations managing data warehouse, governance, migration and integration…
Financial Health
HealthyHealthy · -93% CAGR over 2y
Location
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides a platform for enterprises and financial institutions to discover, test and validate third‑party fintech and AI technologies. Offers secure sandbox environments, synthetic data and a vendor…
Serves enterprise teams at banks, insurers, regulators and other large financial-sector organisations, plus technology vendors seeking access to these buyers.
Financial Health
StableStable · -32% CAGR over 5y
Location
Trajectory
4y · 2021–NowFinancial sub-scores
Computed from 4 filingsDevelops digital employee experience management software that monitors workplace devices, applications and collaboration tools, providing IT teams with real-time analytics, diagnostics, alerts and…
Sells to enterprise IT teams, digital workplace leaders and service desk functions in financial services, government and professional services organisations.
Financial Health
HealthyHealthy · Hiring · 5% CAGR over 3y
Location
STERLING TECHNOLOGY LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides virtual data room software for secure document sharing and collaboration during mergers and acquisitions, capital raises, and other financial transactions. Used by investment banks, legal…
Serves B2B dealmaking teams worldwide, including investment banks, legal advisers, private equity firms, corporate development teams, real estate and capital markets professionals handling M&A,…
Financial Health
HealthyHealthy · -91% CAGR over 2y
Location
Trajectory
4y · 2023–NowFinancial sub-scores
Computed from 4 filingsDevelops software platforms for corporate benefits providers, supporting administration of auto‑enrolment pensions and payroll‑deducted employee benefits. Technology enables multi‑product benefit…
Serves B2B providers in the corporate benefits market, including employee benefit consultancies, corporate advisers, pension/product providers, business process outsourcers, fintechs, payroll…
Financial Health
HealthyHealthy · -4% CAGR over 3y
Location
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsProvides ESG and sustainability management software that collects and consolidates environmental, social and governance data, supports regulatory reporting frameworks, tracks carbon emissions across…
Serves B2B sustainability, finance and compliance teams in mid-market and enterprise organisations, including manufacturing, food and beverage, energy, shipping, retail, real estate, private equity,…
Financial Health
HealthyHealthy · Hiring · 62% CAGR over 1y
Location
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDevelops and provides Atlas, a knowledge management and intranet platform for Microsoft 365. The software structures enterprise content to enable enterprise search, expertise directories, and…
Sells to B2B enterprises using Microsoft 365, especially legal, professional services, financial services and insurance firms, targeting knowledge, innovation and IT leaders and teams.
Financial Health
StableStable · -7% CAGR over 2y
Location
COMMONPLACE DIGITAL LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides an online citizen engagement platform used by governments, planners and developers to collect public feedback on planning, infrastructure and community projects. The software enables…
Sells to public sector bodies and private sector organisations running citizen and community engagement, including councils, housing associations, transport planners, developers, regeneration teams,…
Financial Health
HealthyHealthy · Hiring · 14% CAGR over 4y
Location
DESIGNER SOFTWARE LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops software systems for social housing providers, delivering digital platforms that support management of housing services, tenant information, property records and operational workflows for…
Serves B2B housing providers in the social housing sector, targeting organisations that manage housing services and need sector-specific management systems.
Financial Health
StrongStrong · Growing, Hiring · 31% CAGR over 4y
Location
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsDevelops workforce management software for contact centres, providing demand forecasting, staff scheduling, schedule optimisation, real-time operations management, and tools for employee engagement…
Sells to enterprise contact centres and customer service operations, including high-volume organisations in travel, banking and financial services, targeting workforce management, operations and…
Financial Health
HealthyHealthy · Hiring · 17% CAGR over 5y
Location
CAPILLARY TECHNOLOGIES EUROPE LIMITED
Trajectory
4y · 2023–NowFinancial sub-scores
Computed from 4 filingsProvides cloud-based loyalty management and customer engagement software for enterprises and retail chains. The platform includes customer data management, analytics, segmentation, and rewards tools…
Serves enterprise B2C brands and retail chain operators, including CPG/FMCG, fuel retail, hospitality, airlines, apparel, F&B/QSR, hypermarkets, luxury, jewellery, and health and beauty sectors.
Financial Health
StableStable · Hiring · 130% CAGR over 2y
Location
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides cloud-based expense management software for businesses, including mobile expense submission, receipt scanning, policy-based approvals, mileage tracking, reimbursement processing, expense…
Serves businesses with employee travel and expense needs, particularly finance teams, CFOs and accounting operations in organisations using ERP, HR and travel platforms such as SAP, Workday, NetSuite…
Financial Health
HealthyHealthy · 0% CAGR over 2y
Location
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How London SaaS companies work and how to sell to them
What they do
London SaaS firms usually earn through recurring subscriptions rather than one-off project fees, although implementation, migration, training and premium support often sit alongside the core licence. Pricing tends to be per user, per account, usage-based, module-based or tiered by feature set, with enterprise contracts adding security schedules, service commitments and negotiated renewal terms. The product shape is hosted software: workflow systems, data products, developer tools, finance applications and sector-specific platforms. A credible supplier usually has release management, support coverage and retention routines, not just a custom build team.
Who they sell to
Typical customers range from founder-led SMEs buying through self-serve channels to mid-market and enterprise teams running formal procurement. The economic buyer is often a CFO, COO, CTO, Chief Information Security Officer, Head of Operations or functional director, while end users tend to shape requirements during trials and pilots. Smaller deals may convert through inbound demos and monthly subscriptions; larger accounts usually involve direct sales, legal review, security questionnaires, procurement approval and annual or multi-year commitments. Public-sector opportunities can be relevant, but tend to require framework access, accessibility evidence, data-processing terms and more patient sales cycles.
What they buy
Most SaaS firms tend to spend on cloud hosting, application monitoring, security testing, identity management, billing, payments, revenue recognition, customer support, CRM, product analytics and documentation tooling. As headcount grows, demand usually broadens into HR systems, recruitment support, management accounts, tax advice, commercial legal work, insurance and office services. Marketing spend is often tied to pipeline generation: content, paid acquisition, events, partner marketing and sales development. Technical buyers may also need data warehousing, integration middleware, backup, incident management and developer productivity tools, particularly where uptime and customer trust affect renewals.
Why and how to sell to them
Buying intent often appears when a SaaS provider moves from founder-led selling into repeatable sales, hires senior revenue or security staff, prepares for larger customer due diligence, raises funding, or sees churn and implementation backlogs rise. Useful outbound angles tend to connect to measurable operating pressure: reducing cloud waste, shortening onboarding, improving renewal evidence, passing security review, tightening billing controls or giving leadership clearer account-level performance visibility. London suppliers serving regulated or data-sensitive customers may respond better to proof, references by buyer type and plain risk language than to broad claims about growth.
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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