Turn this list into pipeline.
IAM Companies in the UK: 200+ Active Firms (2026)
Identity and access management companies in the UK build software and services that verify users, manage permissions and secure digital access under GDPR.
Buying centres tend to sit with security, infrastructure, risk and compliance teams, with procurement often pulled in when identity tooling touches workforce directories, customer onboarding or citizen services. Demand is mainly B2B, with public-sector and regulated-sector buyers expecting evidence of access governance, auditability and incident recovery as well as authentication. Commercial work usually blends subscription software, implementation, integration and assurance; smaller engagements look like expert services around a single system, while mid-market and enterprise programmes span user lifecycle management, privileged access and policy design across cloud and legacy estates.
Read more
The UK cohort is compact: 239 actively trading IAM companies, of which 26 report turnover above £5M and 20 have been incorporated since 2022. Reported employment totals 1,936 people, suggesting a market with a visible specialist services layer rather than only product software vendors. The revenue distribution is uneven: a relatively small group crosses the multi-million-pound threshold, while many suppliers appear to be smaller consultancies, implementation partners or early-commercial software firms serving buyers with identity, assurance and integration needs.
There is no single licence for IAM providers in the UK. Where products process personal data, suppliers sit within UK GDPR and Data Protection Act obligations, with the ICO expecting appropriate technical and organisational measures covering confidentiality, integrity, availability, access controls, testing and restoration after incidents. NCSC frames GDPR cyber security as risk-based rather than a fixed control checklist. Providers offering digital identity or attribute services face a more specific market structure: the Office for Digital Identities and Attributes, within DSIT, manages the trust framework, and Digital Verification Services register entry depends on certificates issued through approved conformity assessment bodies.
Future demand appears tied less to standalone password replacement and more to assurance around fragmented workforces, cloud estates and regulated customer onboarding. The cohort’s shape suggests a long tail of specialist implementation and advisory firms, with a smaller revenue-scaled layer selling repeatable software or managed services. Consolidation may follow buyer preference for fewer identity controls and clearer accountability after incidents, although integration complexity gives niche specialists room to persist. Public trust-framework work also tends to favour providers able to evidence process discipline, security testing and certification, which may make early-commercial firms look more like assurance businesses before they look like pure software vendors.
239
Active firms
2026
26
£5M+ turnover
companies above the threshold
£500M
Identity exports
access control and identity, 2024
Key facts
About 10% of the trading cohort reports turnover above £5M (26 of 239 firms) — the rest sits below that revenue band.
8% of the cohort was incorporated since 2022 (20 firms), so a sizeable share is in its first few filing cycles.
The ICO frames UK GDPR security as risk-based, requiring appropriate technical and organisational measures rather than one fixed cyber-security control set.
Digital identity and attribute service providers need certificates from approved or accredited conformity assessment bodies to join the Digital Verification Services register under Section 32 of the Data (Use and Access) Act.
GOV.UK’s 2024 digital identity sectoral analysis estimated 270 UK-registered active digital identity firms and £2.05 billion annual revenue in 2023/2024.
GOV.UK’s 2024 digital identity sectoral analysis found 70% of providers offer identity or attribute verification, 52% support digital identity creation and management, and 51% offer identity management.
Europe was the largest destination region for UK security exports at £6.5 billion in 2024, followed by North America at £2.8 billion.
Top UK IAM companies
CYBERIAM HOLDINGS LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides cybersecurity consultancy focused on identity and access management. Designs, implements and manages IAM, PAM, IGA and CIAM solutions, offering advisory, professional, managed and support…
Serves enterprise and mid-market organisations across finance, retail, healthcare and telecommunications, targeting IT, security and compliance leaders responsible for access, governance and…
Financial Health
WeakWeak · -62% CAGR over 4y
Location
UBISECURE LIMITED
Trajectory
4y · 2020–NowFinancial sub-scores
Computed from 4 filingsProvides digital identity and access management software and services, including cloud and on‑premise IAM, single sign‑on, multi‑factor authentication, user registration and access control, and Legal…
Serves enterprises and public-sector organisations in utilities, financial services, government, healthcare, higher education, telecoms, SaaS and ecommerce, especially teams managing customer,…
Financial Health
StrongStrong · Hiring · 52% CAGR over 3y
Location
Ilex Software Ltd
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDevelops identity and access management (IAM) software for organisations, including authentication, single sign‑on, identity federation, user lifecycle and access rights management. Provides a…
Sells to businesses and large organisations managing employee, customer and partner access, including SMEs and major accounts in banking, insurance, defence, healthcare, media, energy and retail.…
Financial Health
StableStable · Hiring · 58% CAGR over 2y
Location
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides digital identity and access management software, including cloud and on‑premise IAM, single sign‑on, multi‑factor authentication, and user management. Also offers Legal Entity Identifier…
Serves B2B organisations and public-sector bodies needing digital identity, IAM and LEI services, including financial services, utilities, healthcare, higher education, telecoms, SaaS and ecommerce…
Financial Health
DistressedDistressed
Location
SIMEIO SOLUTIONS LIMITED
Trajectory
4y · 2020–NowFinancial sub-scores
Computed from 4 filingsProvides identity and access management software and services, including identity governance, privileged access management, customer identity management, and cloud infrastructure entitlement…
Serves enterprise IT, security and identity teams across industries, including organisations managing employee, customer and application identities at scale.
Financial Health
WeakWeak
Location
PROOFID LIMITED
Trajectory
4y · 2020–NowFinancial sub-scores
Computed from 4 filingsProvides identity security and identity governance services, including advisory, implementation and managed support for access management systems. Helps organisations deploy and operate platforms…
Serves identity security and IT leaders at mid-market and enterprise organisations globally, including banking and finance, higher education, charities and organisations managing workforce, customer,…
Financial Health
StableStable · 12% CAGR over 2y
Location
INTRAGEN LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides identity and access management (IAM) consulting, implementation and managed services. Deploys and integrates solutions for identity governance, privileged access, workforce and customer…
Serves organisations with complex identity needs, especially financial services, healthcare, higher education, retail, and sports, media and entertainment brands, targeting security and IT teams.
Financial Health
StableStable · 2% CAGR over 4y
Location
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsDevelops identity and access management software delivered as a SaaS platform. Provides single sign-on, enterprise password management, multi-factor authentication, user provisioning, and access…
Sells to enterprise and public-sector organisations, especially IT and security teams in accountancy, energy and utilities, financial services, healthcare, policing and defence, and travel and…
Financial Health
WeakWeak · -21% CAGR over 3y
Location
IC Consult
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides identity and access management (IAM) consulting and services, including strategy, implementation, system integration, and managed operations. Supports organisations with access management,…
Serves large enterprises and public-sector utilities with complex identity security needs, across sectors including automotive, banking, retail, energy, finance, healthcare, insurance, logistics and…
Financial Health
StrongStrong · Hiring · 31% CAGR over 2y
Location
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDevelops identity and access management software that automates user account provisioning, role-based access control, password management and single sign-on. Provides cloud-based tools for managing…
Serves B2B and public-sector organisations, especially education, financial services, government, healthcare, nonprofits and MSPs, targeting IT and HR teams managing staff access and user accounts.
Financial Health
HealthyHealthy · -11% CAGR over 2y
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops cloud-based identity governance and administration software that automates user access reviews, access certification and entitlement audits. Platform supports identity lifecycle management,…
Sells to enterprise IT, security, identity governance and compliance teams at companies with access review, audit and risk requirements, including regulated sectors such as banking, healthcare and…
Financial Health
StrongStrong · Hiring · 41% CAGR over 4y
Location
SAVIYNT EUROPE LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides sales and marketing for an identity security and access management software platform that helps organisations govern workforce, privileged and machine identities, manage application access,…
Serves large enterprises and global organisations, particularly IT, security and identity teams managing employees, suppliers, contractors, admins, DevOps/SecOps users, machine credentials and AI…
Financial Health
DistressedDistressed · -60% CAGR over 4y
Location
Avoco Secure Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsDevelops identity orchestration and decisioning software that connects verification services, banks, and data sources via APIs. Enables organisations to authenticate users, perform AML and identity…
Serves enterprises, financial services providers and public-sector organisations building consumer, citizen or workforce identity ecosystems that require verified digital transactions and regulatory…
Financial Health
WeakWeak · 0% CAGR over 5y
Location
DELINEA EUROPE LIMITED
Trajectory
2y · 2023–NowFinancial sub-scores
Computed from 2 filingsProvides identity security and privileged access management software that discovers identities, manages credentials and secrets, and controls privileged access for users, machines, and applications…
Serves enterprise IT, security and IAM teams in organisations with privileged identity risks, including regulated businesses and public sector agencies with audit, compliance and remote workforce…
Financial Health
WeakWeak · -50% CAGR over 1y
Location
Ping Identity
Trajectory
2y · 2022–NowFinancial sub-scores
Computed from 2 filingsDevelops and provides identity and access management software for enterprises, including authentication, single sign-on, identity governance, and security tools that manage user identities and…
Serves large enterprises and digital organizations, selling to IT, security and identity teams responsible for user access, identity security and digital interactions across complex technology…
Financial Health
HealthyHealthy · Hiring · 21% CAGR over 1y
Location
Develops identity and credential management software for organisations, including PKI-based credential issuance, multi-factor authentication, password security management, and identity verification…
Serves enterprise and public-sector security teams in aerospace and defence, energy and utilities, finance and banking, government, US federal agencies and national critical infrastructure…
Location
Develops digital identity and verification software for businesses and consumers, including document and facial verification, age checks, reusable digital ID wallets, authentication tools, fraud…
Serves businesses needing customer identity, age assurance and fraud checks, including online and in-store retail, adult content platforms, financial services, employers, landlords, trust and safety…
Location
Develops identity, payment, and data security software and hardware. Provides identity verification, identity and access management, PKI and cryptographic security platforms, hardware security…
Serves large enterprises and public-sector bodies, especially financial institutions, government agencies, healthcare providers and education organisations, plus partners targeting identity, payments…
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops and provides cloud-based authentication software enabling passwordless multi-factor login for applications and services. Offers cryptographic identity verification, user authentication…
Serves enterprises and online businesses with customer and employee login needs, targeting IT, security and digital product teams responsible for access security, password resets and authentication…
Financial Health
WeakWeak · Hiring · 20% CAGR over 4y
Location
AVOCO IDENTITY LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops digital identity orchestration and decisioning software that connects verification services, banks and data sources through APIs to build identity ecosystems. Enables authentication, fraud…
Serves businesses and public-sector organisations that operate consumer, citizen or enterprise identity services, including teams responsible for digital onboarding, authentication, fraud prevention…
Financial Health
StableStable
Location
Develops digital identity verification software for businesses and consumers, including document and biometric checks, facial age estimation, digital ID wallets, authentication tools, fraud…
Serves businesses needing customer verification and age assurance, including online retail, adult content, financial services, trust and safety teams, employers, landlords, and organisations using…
Location
Provides digital identity verification and customer onboarding software. Platform combines KYC checks including document validation, facial biometrics, sanctions screening, geolocation and database…
Serves businesses that must verify customer, tenant or employee identities, including regulated firms needing KYC, age checks, right-to-work/right-to-rent compliance and fraud-risk controls during…
Location
SAILPOINT TECHNOLOGIES UK LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides identity security and identity governance software that manages user and machine access to enterprise systems. Platform supports access provisioning, risk analysis, password management, and…
Serves enterprise security, IT and identity leaders—including CISOs and CIOs—across financial services, healthcare, manufacturing, education, government, oil and gas, and utilities.
Financial Health
HealthyHealthy · Hiring · 21% CAGR over 2y
Location
Ping Identity
Develops identity and access management software for enterprises. Provides a platform for authentication, single sign‑on, identity governance, API security, and user access control to secure digital…
Sells to large enterprises and digital organisations, targeting IT, security and identity teams responsible for customer, workforce and partner access across complex technology ecosystems.
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops authentication and access security software for operational technology (OT) and industrial systems. Provides passwordless login, one‑time authentication codes, identity and access management…
Serves B2B and public-sector organisations running OT and critical infrastructure, including energy, water, manufacturing, transport, telecommunications, healthcare, food and beverage, chemicals,…
Financial Health
DistressedDistressed · -8% CAGR over 5y
Location
UBISECURE HOLDINGS LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides digital identity and access management software and services, including cloud and on‑premises IAM, single sign‑on, multi‑factor authentication, user and access management, and Legal Entity…
Serves B2B and public-sector organisations, including utilities, financial services, government, healthcare, higher education, telecommunications, SaaS and ecommerce teams, plus firms managing LEIs…
Financial Health
StableStable · -5% CAGR over 4y
Location
Provides identity security and identity governance services, including advisory, implementation and managed support for identity and access management systems. Helps organisations secure workforce,…
Serves enterprise and regulated organisations, including banks and financial services firms, higher education institutions, charities and other large organisations managing workforce, customer,…
Location
Infosec K2K Ltd
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides cybersecurity consulting and services focused on identity and access management (IAM), including IAM assessments, implementation, application onboarding, managed security services,…
Serves global organisations, particularly IT and security teams in regulated sectors requiring identity and access management, cybersecurity assurance, operational technology security, managed…
Financial Health
StrongStrong · Growing, Hiring · 26% CAGR over 3y
Location
Develops and provides digital identity verification, address validation and fraud prevention software. Its platforms use global data sources to help organisations verify customer identities, validate…
Sells to businesses and organisations needing identity, address and fraud checks for their customers, including enterprises operating digitally. Serves a global B2B market, with 20,000 customers…
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides biometric identity verification and automated KYC and AML screening software. Uses facial recognition, liveness detection, OCR and document verification to authenticate identity documents,…
Serves businesses with regulated or fraud-prone onboarding, including financial services, gaming, healthcare, legal and accounting firms, marketplaces, real estate, recruitment, retail/e-commerce,…
Financial Health
StrongStrong · Hiring · 28% CAGR over 4y
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops identity governance and administration software delivered as a cloud platform. Enables organisations to manage digital identities, automate user access provisioning and deprovisioning,…
Serves B2B enterprise IT, security, compliance and identity teams in organizations managing complex workforce access across cloud and legacy systems, including those migrating from Oracle IAM or SAP…
Financial Health
HealthyHealthy · Hiring · 52% CAGR over 4y
Location
MIDSHIPS LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides identity and access management (IAM) consulting, deployment and modernization services. Implements Ping and Keycloak platforms, identity security, authentication, and fraud prevention…
Serves enterprise banks, insurers, gaming operators and fintech companies, especially regulated high-growth organisations with identity, security, fraud prevention and compliance teams.
Financial Health
WeakWeak
Location
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDevelops cybersecurity software for data and identity security. Provides tools for privileged access management, identity governance, data discovery and classification, data loss prevention, and…
Sells to businesses and public sector organisations needing identity, data security and compliance tools, including IT and security teams, MSPs, and smaller organisations with up to 150 employees via…
Financial Health
StableStable · Hiring · 12% CAGR over 2y
Location
PATHLOCK UK LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsDevelops identity governance and security software that manages and monitors user access to enterprise applications. The platform provides access risk analysis, role management, user access reviews,…
Serves enterprise IT, security, compliance and audit teams in organizations using business-critical applications such as SAP, Oracle, Workday, Microsoft Dynamics and PeopleSoft, with needs around…
Financial Health
StableStable · -11% CAGR over 5y
Location
Develops identity and access management software focused on strong authentication. Provides credential management systems, multi-factor authentication, password security and PKI-based digital…
Serves enterprise and public-sector security teams in aerospace and defence, energy and utilities, finance and banking, government, national critical infrastructure, and US federal organisations.
Location
TREVONIX TECHNOLOGIES LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides identity and access management (IAM) consulting, implementation, and managed services. Designs IAM architectures, deploys cloud or on‑premise identity platforms, and delivers support and…
Sells to businesses seeking identity and access management support, from organisations starting or maturing IAM programmes to enterprises needing implementation, managed services, or support. Serves…
Financial Health
StrongStrong · Growing, Hiring · 60% CAGR over 4y
Location
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsDevelops identity and privileged access management software that controls and monitors user access to systems, applications, servers and cloud resources. Features include password vaulting,…
Serves businesses with IT and security teams that manage privileged users, remote access, cloud or hybrid infrastructure, and compliance requirements such as GDPR and ISO 27001.
Financial Health
WeakWeak · -5% CAGR over 2y
Location
Microblink Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops identity verification and KYC software that captures and analyses ID documents, biometrics and payment cards. Provides tools for document verification, liveness and deepfake detection,…
Serves B2B customers in financial services, payments, crypto, marketplaces, healthcare, telecoms, hospitality and travel, and iGaming, especially teams responsible for onboarding, compliance, fraud…
Financial Health
StrongStrong
Location
TRUSTID LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides online identity verification services using identity document validation technology (IDVT). Offers checks for Right to Work, Right to Rent, DBS identity verification, AML/KYC compliance, and…
Serves organisations of any size needing identity verification for compliance, including employers, DBS-screening bodies, landlords or letting agents, AML/KYC-regulated firms, ACSPs, education…
Financial Health
StableStable · Hiring · 18% CAGR over 2y
Location
VERIDIUM UK LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides identity assurance and passwordless authentication software for organisations, including biometric and device‑based multi‑factor authentication, FIDO passkeys, risk analysis, and continuous…
Sells to enterprise IT and security teams needing passwordless authentication, identity assurance, MFA, SSO and user risk controls for workforce access across business applications.
Financial Health
StableStable · -22% CAGR over 4y
Location
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsProvides sales, marketing, and research and development services to its parent company, supporting a cloud-based identity platform that delivers user authentication, authorization, single sign-on,…
Serves developers, product and security teams at businesses building customer-facing or B2B SaaS applications, including retail, financial services, healthcare, nonprofits and startups.
Financial Health
HealthyHealthy · -7% CAGR over 1y
Location
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides digital identity verification and authentication technology for businesses. Offers APIs and platforms for consumer onboarding, identity proofing, fraud prevention, and returning‑user…
Sells to enterprises and digital businesses needing consumer identity verification, including banks, fintech lenders, cryptocurrency platforms, healthcare providers, insurers, marketplaces, merchants…
Financial Health
HealthyHealthy · -5% CAGR over 2y
Location
FOURTHLINE LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides identity verification and fraud detection software for banks, fintechs and online platforms. Offers automated KYC onboarding, AML screening, document verification, ongoing monitoring and…
Serves banks, neobanks, neobrokers, embedded finance providers, marketplaces and mobility platforms in Europe, targeting compliance, risk and onboarding teams.
Financial Health
StableStable · -36% CAGR over 4y
Location
SSH COMMUNICATIONS SECURITY UK LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDevelops cybersecurity software for privileged access management, SSH key and credential management, secure file transfer, and encryption. Also provides quantum‑safe cryptography tools, secure…
Serves enterprise and public-sector security and IT teams, including managed service providers, operational technology operators, federal government agencies and healthcare organisations managing…
Financial Health
DistressedDistressed · -18% CAGR over 2y
Location
Toppan Security
Provides identity and payment technology solutions including smart cards, metal and eco‑friendly payment cards, passport booklets and security documents, biometric authentication, and digital…
Serves banks, fintechs and other financial institutions, alongside government agencies responsible for identity, passports, driver licensing, elections and digital public services worldwide.
Location
Madigan Solutions UK Limited
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides identity and access management consultancy services, implementing and supporting IAM platforms based on IBM technologies. Offers programme delivery, managed support, training, and workshops…
Serves B2B and public-sector organisations, including central and local government, higher education, financial services, utilities, retail and business services, from large enterprises to smaller…
Financial Health
WeakWeak · Hiring · 12% CAGR over 3y
Location
GB Group (Corporate) Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides digital identity verification, address validation and fraud prevention software and data services for businesses, enabling customer onboarding, identity checks, geocoding and investigation…
Sells to businesses and organisations needing identity, address and fraud checks for their customers, including enterprises operating digitally. Serves a global B2B market, with clients across…
Financial Health
HealthyHealthy · Hiring · 60% CAGR over 2y
Location
IAME LTD
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides identity and access management (IAM) consulting services, including advisory, system implementation, and managed services to help organisations deploy, integrate, and operate IAM and access…
Financial Health
HealthyHealthy · 0% CAGR over 2y
Location
Third Wave Identity Ltd
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides consulting and technical implementation services for identity and access management (IAM) and privileged access management (PAM), including system deployment, application onboarding, access…
Serves enterprise and public-sector organisations with IAM and PAM requirements, including finance, banking, insurance, telecoms, energy, utilities, retail, IT, law enforcement and government clients.
Financial Health
StrongStrong · Growing, Hiring · 145% CAGR over 2y
Location
HID Global
Develops and supplies identity and access management technologies including physical access control systems, biometric authentication, ID card printing and issuance equipment, RFID solutions, and…
Serves enterprises, financial institutions, transport operators, law enforcement and public-sector agencies that manage employee, visitor, citizen or customer identities, access credentials and…
Financial Health
Insufficient historyInsufficient history
Location
Unlock all 239 leads
Showing 50 of 239 — +189 more with verified decision-maker contacts, live data, and CRM sync.
How UK IAM companies work and how to sell to them
What they do
IAM suppliers typically make money through recurring subscriptions tied to users, identities, applications, tenants or verification volume, then add implementation, migration and assurance work around the licence. Pure software vendors sell hosted access controls, policy engines, identity proofing or administration workflows; services-led firms configure directories, integrate applications and test access models for clients with mixed cloud and legacy estates. Managed-service variants take on operational tasks such as access reviews, privileged account monitoring and joiner-mover-leaver processes, which makes revenue more annuity-like but keeps delivery capacity close to the gross margin equation.
Who they sell to
Most sales are into organisations where identity failure creates operational, regulatory or fraud risk: banks, insurers, healthcare providers, public bodies, outsourced service providers and larger software operators. The technical sponsor is often a CISO, CTO, head of infrastructure or identity architect, while finance, procurement, legal and risk teams appear once the deployment affects core systems or personal data. Smaller deals may start as advisory work or a departmental integration, often through direct sales or partner referral. Enterprise and public-sector work tends to move through formal procurement, proof-of-concept testing, security review and contract negotiation before rollout.
What they buy
Identity suppliers tend to spend on tools and services that help them build trusted systems, prove controls and deliver projects without overloading specialist engineers. Common categories include cloud infrastructure, secure development tooling, application testing, secrets management, endpoint security, log management, incident response support, billing, CRM, customer support, contract management and usage analytics. Services spend often covers privacy advice, security testing, technical documentation, bid writing, implementation subcontractors and recruitment for identity engineers, security consultants and delivery managers. Firms selling managed identity services may also need monitoring, ticketing, rota management and knowledge-base tooling, because operational response is part of the product rather than an internal back-office concern.
Why and how to sell to them
IAM buyers tend to evaluate suppliers when delivery complexity starts to outrun spreadsheets, shared inboxes and manual evidence packs. Useful triggers include a move from project services into repeatable subscriptions, a new public-sector framework pursuit, a larger regulated customer win, certification work under the UK digital identity trust framework, senior security hires or rising implementation headcount. Outbound tends to land better when it is tied to a current bottleneck: shortening onboarding, reducing audit preparation, improving renewal evidence, protecting delivery margins or making integrations easier to support. Claims should be specific and verifiable, because these firms sell assurance themselves and are used to testing vendor statements before letting another system near customer identity flows.
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.
Related directories
Frequently asked questions
How many IAM companies are there in the UK?↓
What counts as a IAM company in this list?↓
Which are the largest IAM companies in the UK?↓
What do IAM companies in the UK actually do?↓
How does UK IAM compare internationally?↓
How is this list built and how fresh is the data?↓
How big are the typical IAM companies in the UK?↓
Are these mostly new or established IAM companies?↓
What SIC codes does this use?↓
What buying signals should I look for?↓
Push these 239 companies into your pipeline.
Find the right decision-makers, see verified company data, and export your list in seconds.