What Warner McCall does

Warner McCall is a UK-based boutique management consultancy specialising in change, transformation, and technology exploitation services for the Ministry of Defence and adjacent UK public sector clients. The firm fields security-cleared senior consultants (Developed Vetting level), including former senior military officers and Special Forces veterans, who deliver advisory and programme support via proprietary methodologies such as the SUDA (Sense, Understand, Define, Agree) model and a portfolio of 'Accelerator' project formats within its Information Advantage practice. Core service lines cover Change Strategy & Design, Portfolio/Programme/Project Management (P3M), Technology Exploitation, and Information Advantage consulting, delivered as bespoke engagements rather than software products.

Revenue is generated through professional services engagements procured exclusively through Crown Commercial Service and other public sector frameworks, including G-Cloud 12, DOS5, DOS6, MCF4, DSTL SERAPIS, and JOSCAR. The firm's customer base is concentrated in the UK defence sector, with documented engagements for the MoD Directorate of Joint Warfare (IACC, c.£3M in July 2020; C2IA, c.£6M in July 2022), British Army (Army Operating Model under the Levene reforms), Royal Air Force (Recruitment and Selection transformation), and DE&S (EOD Rationalisation Programme, cited to deliver £30-50M p.a. in savings). All disclosed outcomes are operational transformation programmes rather than technology deployments.

In December 2024, Warner McCall was acquired by Principeo Ltd via a 100% share purchase, with co-founders Johnny Norris and Al Sweet stepping back from ownership and day-to-day management. Leadership transitioned to Nick Frall and Roland Lyle. The firm continues to operate under its own brand from the United Kingdom, with no disclosed international presence or commercial-sector revenue, and secured a place on the MCF4 framework (Lot 1 - Business) in September 2025 to broaden its eligible UK public sector buyer base.

Name

Warner McCall

Legal name

Warner McCall Ltd

Website

https://warnermccall.co.uk

Company type

Private

Founded year

2009

Operating status

Operating

Headcount range

1–10 employees

Short description

Warner McCall is a UK-based management consultancy providing security-cleared (DV) change, transformation, and Information Advantage advisory services exclusively to the Ministry of Defence and UK public sector clients, delivered via Crown Commercial Service frameworks.

Ownership category

akta.pro rank

Product category

Management Consultancy - Defence Change & Transformation

NAICS

Process, Physical Distribution, and Logistics Consulting Services (541614)

akta.pro primary industry

Supplier Performance, Quality & Development (BPAHAHAI)

Keywords

• Change management consulting
• Defence transformation services
• Programme management consulting
• Information advantage consulting
• Government consulting services

Headquarters

HQ city

Chippenham

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Management Consultancy Services: Warner McCall provides specialist change, transformation and technical support to defence and government clients. Revenue is generated through professional services engagements delivered via Crown Commercial Service frameworks.
2. Government Framework Contracts: Services procured through government frameworks including G-Cloud, DOS5, DOS6, and MCF4, enabling public sector organisations to access Warner McCall's specialist knowledge and expertise.

Go-to-market motion1 record

Distribution channels6 records

Marketing channels7 records

Core offering

Warner McCall is a UK-based management consultancy that delivers change, transformation, and technical support services to defence, government, and commercial clients. Its core offerings include Change Strategy & Design, Portfolio/Programme/Project Management (P3M), Technology Exploitation, and Information Advantage consulting, delivered by DV-cleared senior consultants with deep defence and commercial consulting experience.

Product overview

Warner McCall is a management consultancy offering a portfolio of professional services rather than a software product platform. Their core service offerings include Change Strategy & Design, Portfolio/Programme/Project Management (P3M), Technology Exploitation, and Information Advantage consulting. These services are delivered through security-cleared senior consultants who provide deep domain knowledge combined with commercial consulting experience. The company also delivers bespoke client solutions such as the Information Advantage Change Campaign (IACC) programme support and RAF Recruitment and Selection system implementations.

Differentiator

Problem solved

Functional benefit

Products and services

• Change Strategy & Design Expert consulting to develop effective change strategies that enable organisations to achieve their goals, including facilitation expertise to secure stakeholder buy-in. Designed for defence, government, and commercial clients undertaking change journeys.
• Portfolio, Programme & Project Management (P3M) Expertise in waterfall, agile, and hybrid P3M methodologies to help clients successfully implement strategies and deliver on change plans. Supports small projects to large-scale, complex, multi-stakeholder programmes for government and commercial clients.
• Technology Exploitation Advisory services to help identify and adopt current and emerging technologies to drive change and growth, addressing skills gaps and cultural barriers. Targeted at defence, government, and commercial clients.
• Information Advantage Consulting to help organisations focus on how data and information can improve decision-making, taking a holistic approach to information discovery and application including organisational culture, skills and ways of working, primarily in the Defence arena.
• Information Advantage Change Campaign (IACC) Programme Support Vice Chief of Defence Staff directed change campaign providing the Change Support Team to enable Defence to compete in the Information Age through audience-centric approaches, including Integrated Orchestration, Persistent Audience Analysis, Operational Decision Support Tool, Adapting HQ for Information Advantage, and Information Advantage Training and Education.
• RAF Recruitment and Selection System Automated recruitment and selection solution featuring a portal that consolidated disparate systems into a single interface, reducing manual processes and improving candidate and recruiter experience. Delivered for the Royal Air Force.

Quantifiable outcome

• EOD Rationalisation Programme delivered £30-50 million p.a. savings through streamlined storage, repair and maintenance
• +2 more outcomes

Named customers5 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Four partnerships are on record, tiered minor and core.

• Defence Academy of the United KingdomminorStrategic or Co-development Partner · 10 December 2020Collaboration on @HutEighteen information warfare network initiative launched by Defence Academy. Warner McCall, as Change Support Team to IACC, is working with the Defence Academy's Information Warfare Group on training and education initiatives.
• NiteworkscoreStrategic or Co-development Partner · 4 November 2020Warner McCall served as Niteworks Project Lead for Phase 1A and Phase 1B of the EOD Rationalisation Programme. Niteworks is a UK MOD initiative that brings together government, industry and academia to address defence challenges.
• Crown Commercial Service (CCS)coreChannel Partner/ Reseller/ Distributor · 5 October 2020Warner McCall is a Crown Commercial Service supplier. Services can be procured through the Digital Marketplace including G-Cloud 12 framework. CCS enables public sector organisations to access Warner McCall's specialist consulting services.
• UK Strategic CommandcoreStrategic or Co-development PartnerWarner McCall serves as Change Support team for the Information Advantage Change Campaign (IACC), providing change and subject matter expertise to help achieve Strategic Command's Strategic Outcomes including Disruptive Capabilities and Improved Understanding.

Scale indicators4 records

Recent moves7 records

Expansion highlights5 records

Direct peers

• Frazer-Nash Consultancy: UK engineering and technology consultancy serving defence, energy and government clients. Comparable to Warner McCall as a UK-based, security-cleared specialist consultancy delivering advisory and change support to MOD via frameworks such as SERAPIS and JOSCAR.
• BMT Group: UK-headquartered maritime and defence engineering consultancy providing design, advisory and programme management services to MOD. Comparable to Warner McCall as a UK specialist consultancy delivering advisory and P3M work into defence via framework agreements.
• Baringa Partners: UK-headquartered independent consultancy with a strong public-sector and energy/defence advisory practice. Comparable to Warner McCall as a specialist UK consultancy delivering change and transformation programmes to government clients via framework agreements.

Broad incumbents

• Deloitte UK – Defence & Security: Big Four consultancy with a dedicated UK Defence & Security practice delivering strategy, transformation and P3M services. Comparable to Warner McCall in providing change and transformation advisory to MOD, but competing primarily at the larger scale of the framework.
• AtkinsRéalis: Global design, engineering and project management consultancy with a sizeable UK Defence & Intelligence practice. Comparable to Warner McCall in providing change, P3M and technology exploitation advisory to MOD, but operating across a much broader portfolio.
• QinetiQ: UK-listed defence technology and consulting company providing advice, technical services and managed solutions to UK MOD and allied governments. Comparable to Warner McCall as a long-standing MOD consulting partner with framework access and DV-cleared staff, but operating at vastly greater scale across both UK and international markets.
• PA Consulting: Global innovation and transformation consultancy with a significant UK public-sector and defence practice. Comparable to Warner McCall in offering change, P3M and technology exploitation advisory to MOD and government, but at much larger scale and with broader cross-sector reach.
• KPMG UK – Defence Advisory: Big Four advisory firm with a UK Defence & National Security practice delivering transformation, technology exploitation and assurance. Comparable to Warner McCall in selling change and P3M services to MOD via public-sector frameworks, but at much greater scale.

Emerging players

• Hawk Fidler Consultancy: Boutique UK defence and security advisory firm providing strategic consulting to MOD and government clients. Comparable to Warner McCall as a small, specialist UK defence change and strategy consultancy operating via the same ecosystem of frameworks and senior-leader relationships.

Regional players

• Marlborough Communications: UK supplier of communications, information systems and managed services to MOD. Comparable to Warner McCall as a UK-based, DV-cleared niche supplier operating on defence frameworks, though focused more on technical product delivery than change consulting.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat3 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/warner-mccall

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

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 Warner McCall