SaaS Companies Using Fastly in the UK: 62 Active Firms (2026)
SaaS businesses running a detected edge delivery platform sell subscription cloud applications while using CDN infrastructure in the UK.
For SaaS suppliers, an edge delivery layer usually sits in front of the application, documentation, marketing site and customer-facing assets, handling caching, traffic bursts and low-latency delivery. Adoption tends to signal a web estate that matters commercially: direct acquisition, self-serve onboarding, API documentation or product pages are visible enough to justify specialist infrastructure. The buying centre is usually split between engineering, platform operations and growth or marketing teams, with procurement becoming more formal where public-sector, financial-services or regulated customers are involved. Engagements are less about project hosting and more about ongoing performance, reliability and data-handling assurance.
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Among UK SaaS adopters, 62 companies are actively trading with this edge platform detected. The platform sits fourth in the CDN ranking for the sector, with a 1.8% detected share across a 3,409-company denominator, so it is a niche choice rather than a default layer. Reported employment totals 1,511 people across the cohort. The registered-office skew is London-heavy: London accounts for 43.5%, followed by the South East at 24.2%, the South West at 8.1%, the East of England at 6.5% and the East Midlands at 4.8%.
UK SaaS suppliers are not licensed as a single class, so regulatory exposure follows the use case rather than the delivery model. Companies running edge infrastructure still need to manage UK GDPR and Data Protection Act 2018 obligations where personal data, logs or customer identifiers pass through cloud-hosted software. The ICO is the relevant data-protection regulator. Procurement can also be shaped by client-sector controls: buyers in financial services, government or other regulated markets often ask for security evidence, contractual data-processing terms and incident-response processes. The CMA’s cloud-infrastructure work matters because it reported an adverse effect on competition and pointed to remedies, but it does not create a separate licensing regime for SaaS providers.
Adoption appears to sit with SaaS firms that treat website performance, documentation delivery and uptime as part of the product experience rather than a marketing afterthought. The cohort has a long-tail feel: many users look like lean commercial software suppliers, while only a smaller group has moved into higher-revenue, procurement-heavy accounts. Future movement is likely to be shaped by migration pressure from bundled cloud platforms, sharper scrutiny of data flows and a preference for fewer vendors in the web stack. Specialist edge layers may remain relevant where latency, cache control or traffic spikes affect renewal risk.
Adoption by company size
Adoption of Fastly rises with company size across the trading UK SaaS companies in this cohort. 0.1% of the 37,913 companies with under 10 employees run Fastly (43 detected). 0.8% of the 1,886 companies with 10–50 employees run Fastly (16 detected). 2.4% of the 166 companies with over 50 employees run Fastly (4 detected). That is a 2.3% gap between the over 50 employees and under 10 employees bands.
62
Active firms
2026
1.8%
Of detected CDN share
UK SaaS
6
Median headcount
Filed accounts
158
Verified contacts
Across this cohort
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Key facts
About 12% of the trading cohort reports turnover above £5M (8 of 62 firms) — the rest sits below that revenue band.
6% of the cohort was incorporated since 2022 (4 firms), so a sizeable share is in its first few filing cycles.
Among SaaS firms with detectable CDN infrastructure, the selected CDN appears on 1.8% of 3,409 companies with a detectable system.
London accounts for 43.5% (27) of the CDN-running SaaS cohort, followed by the South East at 24.2% (15).
Tag-management tooling is also detected on 61.3% (38) of the cohort, while a second CDN appears on 58.1% (36).
SaaS providers processing personal data need to consider UK GDPR and Data Protection Act 2018 obligations, with the ICO as the relevant UK data-protection regulator.
The CMA closed its UK public-cloud infrastructure services case on 31 July 2025 after finding an adverse effect on competition and recommending strategic market status investigations into the two largest cloud infrastructure providers.
CDN market share among UK SaaS
Share of the 3,409 UK SaaS with a detectable system. As of June 2026.
What else do Fastly-running SaaS run?
Share of the 62 Fastly-running UK companies where each technology was also detected. As of June 2026.
Where Fastly SaaS are, and how healthy they look
By region
By registered-office region; companies without a regional match count toward Rest of UK.
By financial health
From filed accounts; firms with fewer than two filings show as insufficient history.
6
Median headcount
£523.8K
Median UK turnover
12.9%
Above £5M turnover
4
Incorporated since 2022
158 verified decision-maker contacts
across these 62 companies, with emails available in Firmbase. Filter by role, seniority and stack.
Top UK SaaS using Fastly
Ranked by sales-readiness score: an AI model assesses what each company does, its sector and size, and scores its overall fit. Best-fit prospects appear first.
Financial sub-scores
Computed from 3 filingsProvides a cloud-based WebOps platform for developing, hosting, and managing websites built with WordPress, Drupal, and Next.js. Offers managed hosting, deployment workflows, performance monitoring,…
Serves enterprises, educational institutions, government bodies, nonprofits, media, technology and consumer brand organizations, targeting developers, marketers and IT leaders managing WordPress,…
Financial Health
HealthyHealthy · Hiring · 11% CAGR over 2y
Location
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Computed from 4 filingsDevelops cloud-based software for log analytics, security monitoring, and IT observability. The platform collects and analyzes machine data to detect security threats, monitor infrastructure and…
Serves B2B and public sector organisations, targeting security operations, IT, DevOps and engineering teams across education, finance, gaming, manufacturing, retail and tech/SaaS.
Financial Health
StableStable · -9% CAGR over 3y
Location
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Computed from 5 filingsProvides aviation software platform delivering real-time turbulence monitoring and forecasts using crowdsourced pilot reports, sensor data and AI modelling. Sends alerts and ride‑quality maps to…
Serves airlines and corporate aviation operators, targeting flight operations leaders, pilots, dispatchers, cabin crew, management and safety teams responsible for ride quality and turbulence risk.
Financial Health
StableStable · -7% CAGR over 4y
Location
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Computed from 3 filingsDevelops blockchain analytics software and data services used to trace cryptocurrency transactions, assess wallet and exchange risk, monitor transactions for compliance, and support investigations by…
Serves government agencies, law enforcement, regulators, tax authorities, crypto exchanges, financial institutions, insurance firms, cybersecurity companies and web3 businesses operating in digital…
Financial Health
WeakWeak · -10% CAGR over 2y
Location
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Computed from 3 filingsOperates an online fundraising platform that enables individuals and charities to create fundraising pages, collect donations, run charity campaigns and events, and process contributions online,…
Serves charities, individual fundraisers and donors using online giving, including people raising money for personal, community and nonprofit causes. Targets both organisations and consumers involved…
Financial Health
StableStable · 0% CAGR over 2y
Location
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Computed from 5 filingsProvides a digital platform for client and staff onboarding compliance, including identity verification, anti‑money laundering checks, right‑to‑work and right‑to‑rent checks, DBS processing,…
Serves B2B compliance, HR and operations teams in legal, financial services, property, healthcare and recruitment organisations that need high-volume client or staff onboarding checks.
Financial Health
StrongStrong · Growing, Hiring · 29% CAGR over 4y
Location
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Computed from 3 filingsDevelops and provides cloud-based recruiting software for employers, including applicant tracking systems, candidate relationship management, career site tools, text recruiting, onboarding…
Sells to businesses, primarily enterprise employers and HR teams. Targets CHROs, talent acquisition, HR operations and IT leaders in sectors including retail, healthcare, manufacturing and finance,…
Financial Health
StableStable · 0% CAGR over 1y
Location
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Computed from 3 filingsProvides a digital platform for employment and income verification. Uses integrations with HMRC, payroll systems, Open Banking and other data sources to deliver verified work history and earnings…
Serves B2B customers that need employment and income checks, including background screening providers, recruiters, employers, tenant referencing providers and financial services firms.
Financial Health
StableStable · Hiring · 47% CAGR over 2y
Location
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Computed from 5 filingsDevelops cloud‑based software for risk and insurance management. Platform provides tools for policy, billing and claims administration, risk data management, incident reporting, compliance, safety…
Serves risk, safety, insurance and compliance teams at P&C insurers, MGAs, TPAs, risk pools, public entities, and organizations in construction, healthcare, manufacturing and transportation.
Financial Health
WeakWeak · -53% CAGR over 4y
Location
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Computed from 3 filingsProvides a software-as-a-service platform for retailers to manage dropshipping and curated marketplace operations. Software connects retailers with suppliers, synchronises inventory, manages product…
Serves B2B retailers and ecommerce organisations, particularly supply chain, category, dropship and online trading teams managing large product ranges and supplier networks.
Financial Health
StrongStrong · Hiring · 33% CAGR over 2y
Location
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Computed from 5 filingsDevelops and provides cloud-based recruiting software for employers, including applicant tracking systems, candidate sourcing and engagement tools, career site management, text recruiting, onboarding…
Serves enterprise employers and HR teams, including CHROs, talent acquisition, HR operations and IT leaders, across sectors such as retail, healthcare, manufacturing, finance and hospitality.
Financial Health
HealthyHealthy · 0% CAGR over 4y
Location
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Computed from 5 filingsDevelops and provides cloud-based law firm management software. Platform includes matter management, document automation, client portals, CRM, workflow automation, time tracking, billing, accounting,…
Sells to midsize law firms and legal practices, including managing partners, practice managers, firm administrators, IT managers, accounting managers and lawyers across mixed and specialist practice…
Financial Health
StableStable · -62% CAGR over 4y
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Computed from 3 filingsDevelops a data automation platform that generates synthetic and production-like datasets for software testing and development. Provides tools for database generation, data masking, subsetting, and…
Serves enterprise technology, QA and data teams in regulated sectors such as banking, insurance, telecoms, energy, healthcare and life sciences, especially organisations running major ERP, CRM and…
Financial Health
StableStable · Hiring · 18% CAGR over 2y
Location
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Computed from 3 filingsProvides a cloud-based application security and risk management platform that scans software for vulnerabilities across the development lifecycle, including static and dynamic testing, open‑source…
Serves B2B software and security teams, from startups to Fortune 500 enterprises, targeting CISOs, AppSec leaders, developers and security teams in financial services, public sector, healthcare,…
Financial Health
StableStable · Profitable · -7% CAGR over 2y
Location
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Computed from 5 filingsProvides supply chain management software and services that help manufacturers collect supplier data, manage product compliance, track materials and sourcing, and report on ESG, trade, and regulatory…
Serves B2B complex manufacturers, including medical device, industrial equipment, aerospace and defense, electronics, and automotive companies with supply chain compliance, ESG, and trade compliance…
Financial Health
HealthyHealthy · -74% CAGR over 3y
Location
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Computed from 3 filingsDevelops software for managing and operating Apache Kafka data streaming infrastructure. Provides a control‑plane console for monitoring, governance, and access management, and a gateway proxy to…
Targets platform engineering, data engineering and developer teams at enterprises using Kafka, including financial services, retail/e-commerce, and transport/logistics organisations.
Financial Health
StableStable · Hiring · 59% CAGR over 2y
Location
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Computed from 5 filingsDevelops and provides an online learning platform for higher education STEM subjects. The software enables instructors to create interactive courseware, homework and assessments, run placement tests,…
Sells primarily to higher education institutions, especially STEM and maths departments. Serves instructors, course creators, administrators and placement-testing teams at universities and colleges…
Financial Health
StableStable · Hiring · 4% CAGR over 4y
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Computed from 5 filingsDevelops data publication software that enables organisations to query, tabulate, and publish large statistical datasets. Provides APIs, automated data pipelines, disclosure control checks, and tools…
Serves public sector statistics agencies, census authorities and research-data organisations that publish official datasets or run trusted research environments for analysts and public users.
Financial Health
DistressedDistressed · -68% CAGR over 4y
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Computed from 5 filingsDevelops and provides cloud-based governance, risk and compliance (GRC) software for enterprises. Platforms support enterprise risk management, regulatory compliance, internal audit, cybersecurity…
Serves enterprise risk, compliance, audit and cybersecurity teams in regulated industries including banking, financial services, energy, healthcare, insurance, life sciences, technology, telecoms and…
Financial Health
StableStable
Location
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Computed from 4 filingsDevelops website optimization software that crawls and analyzes websites to identify technical SEO, performance, accessibility, and quality issues. Provides monitoring, analytics dashboards, QA…
Sells B2B to enterprise website teams, including SEO marketers, web developers, digital operations and accessibility teams, with emphasis on e-commerce, media and publishing companies, and agencies.
Financial Health
DistressedDistressed · -18% CAGR over 4y
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Computed from 5 filingsDevelops and retails employee communication software for frontline and deskless workforces, providing messaging, shared inbox and SMS chat, forms and checklists, pulse surveys, intranet-style content…
Serves employers with frontline, deskless or hourly workforces, targeting HR, operations, internal communications and location managers responsible for engaging staff across multiple sites, shifts…
Financial Health
DistressedDistressed · -16% CAGR over 4y
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Computed from 4 filingsProvides an on-demand pay platform that enables employees to access earned wages before scheduled payday. Integrates with payroll, HR and time‑tracking systems and offers tools such as prepaid cards,…
Serves B2B employers of all sizes across healthcare, grocery, retail, call centres, restaurants, manufacturing, travel, hospitality, public sector and franchise sectors, plus HCM, payroll and…
Financial Health
DistressedDistressed · 29% CAGR over 2y
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Computed from 4 filingsProvides a peer‑to‑peer marketing and student recruitment platform for higher education institutions, enabling universities to connect prospective students with current student ambassadors through…
Serves higher education institutions, especially university recruitment, admissions and marketing teams seeking to engage and convert prospective domestic and international students.
Financial Health
DistressedDistressed · -12% CAGR over 3y
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Develops cybersecurity software for security configuration management, file integrity monitoring and vulnerability management. Provides tools that detect unauthorised system changes, assess risks,…
Serves B2B security, IT, compliance and operations teams in enterprises and mid-market organisations, including banking, energy and utilities, and industrial firms managing IT and OT environments.
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Computed from 5 filingsDevelops a software platform for the reinsurance market that manages programme data, supports broker–cedent collaboration, and provides analytics and AI-assisted tools for pricing, placement…
Serves B2B customers in the insurance sector, primarily reinsurance cedents, brokers, and enterprise reinsurance teams involved in programme placement, client engagement, and market deal coordination…
Financial Health
HealthyHealthy · Hiring · 26% CAGR over 4y
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Computed from 3 filingsProvides a cybersecurity platform that connects organisations with a global community of security researchers to identify vulnerabilities. Offers bug bounty programmes, vulnerability disclosure…
Serves security and engineering teams at enterprises and public sector organisations, including financial services, healthcare, retail/e-commerce, automotive, crypto/blockchain, hospitality, US…
Financial Health
StrongStrong · Hiring · 26% CAGR over 2y
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Computed from 3 filingsDevelops experience management and market research software platforms including survey tools, online panel management, voice‑of‑customer and employee feedback systems, qualitative research…
Serves B2B enterprises, market research agencies and insight teams, especially CX, EX, market research and marketing leaders in sectors such as retail, insurance, travel, healthcare and consumer…
Financial Health
HealthyHealthy · 0% CAGR over 2y
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Computed from 2 filingsDevelops IT service management (ITSM) and IT asset management (ITAM) software integrated with Microsoft Dynamics 365 and the Microsoft Power Platform. Provides ServiceTeam applications and…
Serves IT departments and service providers in commercial, government and education organisations, including managed service providers and Microsoft partners, with customers ranging from local…
Financial Health
StrongStrong · Hiring · 100% CAGR over 1y
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Computed from 5 filingsProvides a cloud platform for managing and analysing engineering test data. Ingests measurements and configuration metadata from test rigs, simulations, and labs, enabling real‑time analysis,…
Serves B2B R&D and engineering teams in manufacturing and energy, including heads of R&D, engineering leads, software/data engineers, systems engineers and test engineers working with lab, field and…
Financial Health
StrongStrong · Hiring · 12% CAGR over 4y
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Computed from 5 filingsDevelops software and APIs for document conversion and processing, including services to convert, merge, watermark, secure and OCR files such as PDFs via cloud-based REST services and on‑premise web…
Sells to businesses and software development teams, especially those building on REST APIs, on-premises web services, Microsoft Power Automate, Power Apps and Azure Logic Apps.
Financial Health
WeakWeak
Location
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Computed from 5 filingsDevelops contextual AI technology for digital advertising. Provides tools that classify and analyse online content and bidstream signals to enable cookie‑free ad targeting, campaign optimisation, and…
Serves enterprise brands, media agencies, broadcasters, publishers, online platforms and adtech partners involved in digital, programmatic and CTV advertising.
Financial Health
HealthyHealthy · -54% CAGR over 5y
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Computed from 5 filingsDevelops software and data platforms for eye health programmes, enabling vision screening, patient tracking and service monitoring in schools, communities and workplaces. Used by governments and NGOs…
Serves governments, international NGOs and eye-health programme planners running public health services in schools, communities and workplaces, particularly organisations strengthening health systems…
Financial Health
HealthyHealthy · Hiring · 13% CAGR over 4y
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Computed from 3 filingsProvides managed detection and response cybersecurity services, including 24/7 security monitoring, threat detection, investigation, and incident response. Develops a security operations platform…
Serves B2B security teams and SOC leaders at organizations of any size across industries, including those operating cloud, email, endpoint, identity, network and SaaS environments.
Financial Health
HealthyHealthy · Hiring · 11% CAGR over 2y
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Computed from 3 filingsDevelops and provides cloud software for charities, foundations, educational institutions, and corporate CSR programmes. Products include fundraising and donor management CRM systems, grant and…
Sells to social-impact organisations: charities and not-for-profits, arts and healthcare organisations, schools, colleges and universities, trusts and foundations, grantmakers, and corporate CSR…
Financial Health
WeakWeak · -4% CAGR over 2y
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Develops and provides ClickHouse, an open‑source column‑oriented database management system for online analytical processing. Offers cloud-hosted and managed services for real-time analytics, data…
Serves B2B data, engineering and platform teams building analytics, observability, data warehousing, ML and AI products, with customers in technology, cybersecurity, gaming, ecommerce, automotive,…
Financial Health
N/AN/A
Location
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Computed from 5 filingsProvides a cloud-based WebOps platform for building, hosting and managing websites using WordPress and Drupal. Offers managed hosting, deployment workflows, content publishing tools, performance…
Serves marketing, developer and IT teams at organizations running WordPress, Drupal and Next.js websites, including education, consumer brands, government, media, nonprofit and technology sectors,…
Financial Health
WeakWeak
Location
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Computed from 2 filingsDevelops AI software that creates and manages automated “digital workers” to perform business processes such as compliance, finance operations, supply chain tasks and data workflows, with governance…
Serves enterprise teams in regulated and data-heavy industries, including healthcare and life sciences, retail and CPG, financial services, IT and tech, across compliance, procurement, supply chain,…
Financial Health
DistressedDistressed · -27% CAGR over 1y
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Computed from 5 filingsDevelops white‑label personal cloud platforms for mobile network operators and service providers, enabling branded services for cloud storage, backup, content transfer, and device data protection,…
Serves telecom operators, mobile service providers, insurers and retailers seeking white-label personal cloud offerings for their subscribers, with emphasis on global operators and subscriber…
Financial Health
StableStable
Location
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Computed from 3 filingsDevelops software systems for managing and tracking surgical instruments and sterile processing workflows in healthcare facilities. Provides web-based tools for instrument tracking, compliance…
Serves sterile processing departments and perioperative leaders at healthcare organizations, including hospitals and medical centers of varying sizes, with buyers such as SPD directors, central…
Financial Health
DistressedDistressed
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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
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Computed from 5 filingsProvides recruitment software that distributes job adverts to thousands of job boards, social media channels and search engines, and offers tools for candidate sourcing, résumé database search,…
Sells to B2B recruitment teams, including direct employers, in-house talent acquisition teams, and agency recruiters seeking to advertise roles, manage applicants, and optimise job board spend.
Financial Health
StrongStrong · Growing, Hiring · 7% CAGR over 5y
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Computed from 3 filingsProvides a crowdsourced cybersecurity platform that connects organisations with security researchers to identify software and infrastructure vulnerabilities. Offers bug bounty programmes, penetration…
Serves security buyers and teams at enterprises and public-sector organisations, especially in financial services, healthcare, retail, automotive, technology and security companies.
Financial Health
StrongStrong · Hiring · 39% CAGR over 2y
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Computed from 5 filingsProvides market data, analytics, and research on energy storage and power markets. Offers a platform with revenue benchmarks, forecasts, and valuation tools for battery and solar assets, alongside…
Serves B2B energy market participants, including investors, developers, asset managers, structured finance teams, and traders involved in battery storage, solar, renewables, co-location, and data…
Financial Health
StrongStrong · Growing, Hiring · 75% CAGR over 4y
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Computed from 5 filingsDevelops and provides booking and ticketing software for tour operators, attractions, sightseeing tours and hop‑on hop‑off bus services. Platform includes online reservations, OTA integrations,…
Serves B2B operators in travel and visitor attractions globally, including hop-on hop-off and bus operators, sightseeing tour companies, observation decks, cultural venues, and leisure destinations.
Financial Health
HealthyHealthy · -73% CAGR over 4y
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Computed from 2 filingsDevelops governance, risk, and compliance (GRC) software platforms that help organisations manage enterprise risk, regulatory compliance, internal audits, cybersecurity risk, and third‑party risk…
Serves enterprise risk, compliance, audit, cybersecurity and governance teams in regulated industries including banking, financial services, energy, healthcare, insurance, life sciences, technology,…
Financial Health
WeakWeak · -9% CAGR over 1y
Location
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Computed from 3 filingsDevelops software for bioanalytical data review and auditing in pharmaceutical research. Its Red Thread platform uses analytics and artificial intelligence to analyse pharmacokinetic and…
Serves biopharmaceutical sponsors and bioanalytical teams in drug development, including scientific review, QC/QA, regulatory compliance and clinical development decision-makers handling PK,…
Financial Health
WeakWeak · -9% CAGR over 2y
Location
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Develops cloud‑based recruiting software including applicant tracking systems, candidate relationship management, career site tools, text recruiting, and onboarding management, helping employers…
Serves enterprise employers and HR, talent acquisition, HR operations and IT leaders, particularly in retail, healthcare, manufacturing, finance and hospitality, with high-volume or hard-to-fill…
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Computed from 5 filingsDevelops software that integrates enterprise asset management systems, IoT sensor data and 3D digital twin models to visualise and monitor physical assets. The platform provides a 3D interface for…
Serves large enterprises with asset-intensive facilities, targeting operations, maintenance and asset management teams using EAM systems such as IBM, Salesforce, SAP, IFS or MRI, plus IoT-enabled…
Financial Health
StrongStrong · Hiring · 12% CAGR over 4y
Location
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Develops AI-powered software platform for private markets firms, providing tools for capital fundraising, deal sourcing and management, and investor relations. Offers applications, data integration,…
Serves private markets firms, including private equity, real assets, real estate/infrastructure and private credit managers, targeting capital formation, deal, investor relations and investor…
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Computed from 4 filingsDevelops and provides software for security information and event management (SIEM), log collection and analysis, and API security. Offers open-source and enterprise platforms that centralise log…
Serves B2B security and IT operations teams, including SOC analysts and leaders, at organisations needing SIEM, log management, API security, and flexible cloud or on-prem deployment.
Financial Health
StrongStrong · Hiring · 13% CAGR over 3y
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How Fastly usage is detected
Company data
Detected companies are joined to UK Companies House records and XBRL accounts data. 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.
Detection
Firmbase crawls the public website of actively-trading UK companies and fingerprints the technologies present: tracking scripts, embedded forms, chat widgets, CMS markers and similar signatures. A company is included in this list when one or more of the technology's signatures are found on its site; closely-related variants of the same product are grouped under one name. Detection covers what is visible on the public web — a company using the technology purely internally, with no website footprint, will not appear. Counts are therefore a conservative floor, not a ceiling. SaaS companies are identified using Firmbase's semantic classification of company activity, built from filings, websites and registered SIC codes rather than SIC codes alone. The detected counts and share figures on this page are computed within that sector cohort, so "share" always means share of SaaS companies with a detectable system — not of all UK companies.
Freshness
Websites are re-crawled on a rolling basis and the underlying company data is refreshed from Companies House continuously; filings appear within days of submission. The list and its statistics are regenerated when the detected cohort moves meaningfully. You can see the last-updated timestamp near the top of the page.
Fastly is a trademark of its respective owner. Firmbase is not affiliated with, sponsored by, or endorsed by the trademark owner.
UK SaaS by CDN
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Frequently asked questions
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