Adsure Services

What Adsure Services does

Adsure Services PLC is a UK-listed public holding company (AQUIS: ADS) that operates a portfolio of professional advisory and assurance services through its wholly-owned subsidiary TIAA Limited. The business provides internal audit, compliance, grant funding audits, scrutiny services, anti-crime and fraud prevention, IT audit, cyber assurance, governance support, HR investigations, AI and digital assurance, and advisory services. It serves four core UK public sector verticals — Healthcare (NHS Trusts, Foundation Trusts, integrated care boards), Housing (130+ social housing providers and housing associations), Education (universities, FE colleges, Multi Academy Trusts, schools), and Government (central government, local authorities, emergency services). The company was incorporated in 2002 (with operating roots dating to 1995) and listed on the AQUIS exchange in 2024.

The core technology stack centres on TIAA Insight, a proprietary AI large language model co-developed with the University of Essex through an Innovate UK Knowledge Transfer Partnership, which is moving from testing into deployment in 2026. In November 2025, Adsure launched new audit software in partnership with K10 Vision under a 'Fit for the Future' technology initiative. The company holds B Corp certification at the subsidiary level and is pursuing group-level certification, and is registered with the ICO as a data controller under UK GDPR.

Adsure generates revenue primarily through multi-year (2-5 year) B2B contracts with government-funded organisations, achieving 85% recurring revenue. FY2025 (year ended 31 March 2025) revenue was £10 million via TIAA Limited, with 7% revenue growth and 35% EBITDA growth. Distribution is via direct enterprise field sales and dedicated account management. The go-to-market strategy is relationship-based contract renewals and expansion within a defined UK public sector vertical set, supplemented by selective acquisitions to build a diversified group of specialist professional services firms.

Name

Adsure Services

Legal name

Adsure Services PLC

Website

https://adsureservicesplc.co.uk

Company type

Public

Founded year

1995

Operating status

Operating

Headcount range

101–250 employees

Short description

Adsure Services PLC is a UK-listed holding company providing internal audit, compliance, anti-crime, cyber assurance, and advisory services to government-funded organisations in healthcare, housing, education, and local government through its subsidiary TIAA Limited, with proprietary AI tooling (TIAA Insight) in deployment.

Ownership category

akta.pro rank

Product category

Internal Audit and Business Assurance Services

NAICS

Offices of Certified Public Accountants (541211)

SIC

Finance Services (6199)

akta.pro primary industry

Audit & Assurance Services (BPAHABAA)

akta.pro secondary industry

Ethics, Integrity & Whistleblowing Program Advisory (BPAHAFAI)

Keywords

• Internal audit services
• Compliance and assurance
• Cyber and IT audit
• Public sector advisory
• Fraud and security management

Headquarters

HQ city

Fareham

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Others

Revenue model

1. Professional Advisory and Assurance Services: Adsure Services generates revenue through its wholly-owned subsidiary TIAA Ltd, providing internal audit, anti-crime, security management, IT audit, cyber assurance and advisory services. Revenue is primarily contract-based with 85% recurring revenue from long-term contracts (2-5 year typical contract length) with government-funded organisations. The company reported £10m revenue in FY2025, with 7% revenue growth and 35% EBITDA growth for the year ended 31 March 2025.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

Adsure Services provides business assurance and advisory services through its wholly-owned subsidiary TIAA Limited, including internal audit, compliance, grant funding audits, scrutiny services, anti-crime and security management, governance support, HR investigations, IT audit, cyber assurance, AI and digital assurance, and advisory services. These services are delivered to government-funded organisations across housing, healthcare, education, and local government sectors in the UK under long-term contracts (2-5 years).

Product overview

Adsure Services operates as a holding company building a diversified cluster of specialist professional services firms, anchored by its wholly-owned subsidiary TIAA Limited. TIAA Limited provides the core business assurance and advisory services including internal audit, compliance, grant funding audits, scrutiny services, anti-crime, governance support, IT audit, cyber assurance, and advisory services. The company's strategic growth model combines organic expansion with selective acquisitions across internal audit, management consultancy, digital consultancy, and investigatory and security services. Central to the portfolio is TIAA Insight, a proprietary AI technology platform developed with the University of Essex that powers operational efficiency and enables new service capabilities across the Group. The company serves government-funded organisations across four key sectors: Healthcare (NHS trusts, foundation trusts, integrated care boards), Housing (social housing providers, housing associations), Education (universities, further education colleges, MATs, schools), and Government (central government, local authorities, emergency services).

Differentiator

Problem solved

Functional benefit

Brands

• TIAA Insight: Proprietary AI technology developed with the University of Essex through an Innovate UK Knowledge Transfer Partnership, designed to help government-funded organisations improve efficiencies and reduce costs

Products and services

• Risk & Assurance Services Service bundle comprising internal audit, compliance, grant funding audits, and scrutiny services delivered to government-funded organisations including NHS, housing associations, universities, and local authorities.
• Risk & Advisory Services Service bundle comprising anti-crime (fraud and security management), governance support and HR investigations, AI and digital assurance, and advisory services for government-funded organisations.
• K10 Vision Audit Software Audit software platform launched under the 'Fit for the Future' technology initiative to support TIAA's internal audit and assurance service delivery.
• TIAA Insight AI Tool Proprietary AI large language model technology co-developed with the University of Essex through an Innovate UK Knowledge Transfer Partnership, designed to improve efficiencies and reduce costs for government-funded organisations.

Quantifiable outcome

• Debtor days reduced from 43 to 39
• +4 more outcomes

Named customers7 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability3 records

Feature2 records

Partnerships

Two partnerships are on record, tiered core.

• K10 VisioncoreTechnology or Integration · 1 November 2025Agreement with K10 Vision to launch new audit software on November 1, 2025 as part of the 'Fit for the Future' technology initiative. The software integrates with TIAA's service offerings.
• University of EssexcoreStrategic or Co-development PartnerStrategic partnership with University of Essex through an Innovate UK Knowledge Transfer Partnership to develop TIAA Insight, a proprietary AI large language model technology. This is a central component of Adsure's AI-driven strategy and the foundation for planned deployment across the Group.

Scale indicators7 records

Recent moves8 records

Expansion highlights6 records

Direct peers

• RSM UK: Mid-tier UK audit and advisory firm with a dedicated public sector practice serving local authorities, NHS bodies, housing associations and universities. Closely comparable in target customer base, service mix (internal audit, risk, compliance), and contract model.
• Grant Thornton UK: Mid-tier UK audit firm with public sector and not-for-profit expertise across local government, healthcare and housing. Provides internal audit, advisory and assurance services that overlap directly with Adsure's portfolio.
• Bishop Fleming: UK regional audit and advisory firm with a strong public sector and not-for-profit practice, including housing associations, local government and healthcare. Similar size band and service mix.
• Azets UK: UK audit, tax and advisory firm with a public sector and not-for-profit practice. Comparable in target clients (housing associations, local authorities, education) and core audit/risk services.
• Crowe UK: UK audit and advisory firm with public sector and not-for-profit practices serving housing associations, charities, NHS and local government. Comparable in size band and customer mix.
• BDO UK: UK audit and advisory firm serving public sector and not-for-profit clients including NHS, housing associations, universities and local authorities. Overlapping service lines (internal audit, risk, IT audit) and target verticals.
• Mazars UK (Forvis Mazars): Mid-tier UK audit firm with a strong public sector practice covering local government, NHS, housing and education. Directly comparable on internal audit, governance, and advisory services to government-funded clients.
• MHA (MacIntyre Hudson): Top 20 UK audit and advisory firm with public sector and not-for-profit expertise. Closely comparable in scale, service offering (internal audit, risk assurance, advisory) and public-sector client base.

Broad incumbents

• PwC UK: Big Four firm with a sizeable UK public sector practice covering NHS, local government, housing and education. Competes for the same large audit and assurance mandates, though with a much broader portfolio and deeper bench than Adsure.
• KPMG UK: Big Four firm with a public sector practice serving central government, NHS, local authorities and housing providers. Overlaps with Adsure on internal audit, risk and cyber assurance engagements, but at much larger scale.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/AdsureServices
• LinkedInlinkedin.com/company/adsure-services

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Adsure Services