What Flag does

Flag (Flag Communication Ltd) is a UK-headquartered global sustainability communications and reporting agency operating across London, New York, Tokyo, Spain, and Canada with a team of more than 60 specialists. The firm delivers three core service lines — sustainability strategy advisory, sustainability/integrated/annual corporate reporting, and sustainability communications campaigns — alongside a growing data management and reporting technology practice built around the Workiva platform, including three newly launched accelerators for AI-powered gap assessments, EPR data management, and disclosure standardization.

The firm's client base consists primarily of large global enterprises across technology, automotive, food and beverage, agriculture, hospitality, financial services, and consumer goods — including Hitachi, General Motors, HP, Ford, Nestlé, Molson Coors, Cargill, Chiquita, and Hyatt — plus selected NGOs and standards bodies such as WBCSD and RSPB. Services are delivered through a sales-led, direct enterprise engagement model with project-based and retainer pricing, supplemented by thought leadership content, webinars, conference presence, and earned media. The firm holds ISO 9001 certification continuously since 1995, is a member of the IFRS Sustainability Alliance, and ranks in the top 3 globally by Corporate Register for sustainability report consultancy.

Flag is privately held following a 2022 investment by Vespa Capital and operates as a collective group including Flag Communication Ltd (UK), Flag Communication US Ltd, and the wholly owned subsidiary ESG Communications Ltd (acquired 2022). Recent strategic activity — Japan market entry in February 2026, productized Workiva accelerators, and senior hires in strategy and data management — positions the firm to capture expanding regulatory-driven demand for sustainability disclosure and stakeholder communications.

Name

Flag

Legal name

Flag Communication Ltd

Website

https://flag.co.uk

Company type

Private

Founded year

1998

Operating status

Operating

Headcount range

51–100 employees

Short description

Flag is a UK-headquartered global sustainability communications and reporting agency serving large enterprise clients with sustainability strategy, integrated/ESG reporting, and stakeholder communications, operating across UK, US, Canada, Spain, and Japan.

Ownership category

akta.pro rank

Product category

Sustainability Communications and Corporate Reporting Services

akta.pro primary industry

Sustainability & ESG Reporting (GRI/SASB/ISSB/CSRD) (EUAHAJAB)

akta.pro secondary industries

Environmental, Climate & Sustainability Standards & Reporting Cooperation (BPADANAI), Assurance & Verification of Sustainability Reports (Limited/Reasonable Assurance) (EUAHAJAI)

Keywords

• Sustainability communications
• Corporate reporting services
• ESG advisory
• Integrated annual reporting
• Workiva implementation

Headquarters

HQ city

Cambridge

HQ country

United Kingdom

HQ region

Europe

Offices5 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Professional Consulting Services: Sustainability strategy consulting, corporate reporting (sustainability, integrated, annual), and communications services provided on a project and retainer basis to global brands

Go-to-market motion1 record

Distribution channels1 record

Marketing channels7 records

Core offering

Flag is a global sustainability communications agency that helps organisations bridge the gap between sustainability ambition and real business value. It delivers three core offerings — sustainability strategy (materiality assessments, CSRD readiness, target-setting), sustainability/integrated/annual reporting (end-to-end report production aligned to frameworks such as GRI, SASB, TCFD, ISSB), and sustainability communications (creative campaigns, PR, branding, digital and video) — alongside Workiva platform implementation and optimisation services across the UK, US, Canada, Spain and Japan.

Product overview

Flag is a global sustainability communications agency offering a portfolio of professional services centred on three core offerings: Sustainability Strategy Services, Sustainability Reporting Services (including integrated, ESG, and annual reporting), and Sustainability Communications Services. The agency also provides specialised Data Management and Reporting Technology Services, including Workiva platform implementation and support, to help clients manage, measure and communicate sustainable business practices. With over 60 specialists across UK, US, Canada, Spain and Japan, Flag combines consultancy, creative, digital and project management expertise to support clients throughout their sustainability reporting and communications lifecycle.

Differentiator

Problem solved

Functional benefit

Products and services

• Sustainability Strategy Services Advisory services helping organisations bridge the gap between current state and sustainability ambitions, including double materiality assessments, CSRD readiness, impact assessments, and target-setting. Sold to enterprise sustainability leaders and ESG teams.
• Sustainability, Integrated and Annual Reporting Services End-to-end sustainability reporting services including reporting strategy, content planning, content collection, reporting tools (including Workiva), production, and launch support. Designed for enterprise sustainability, finance and IR teams producing annual sustainability, integrated and corporate reports.
• Sustainability Communications Services Award-winning communications campaigns including communication strategy, creative campaigns, media and PR, branding, digital content, and video and animation production. Designed for enterprise brand, communications and marketing leaders.
• Workiva Accelerators Proprietary accelerators built on the Workiva reporting platform delivering AI-powered gap assessments, Extended Producer Responsibility (EPR) data management, and disclosure standardisation to streamline ESG/sustainability and regulatory reporting for enterprise clients.

Quantifiable outcome

• 85%+ client retention rate year-over-year
• +3 more outcomes

Named customers23 records

Segments5 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

Six partnerships are on record, tiered core and minor.

• ESG Communications LtdcoreStrategic or Co-development PartnerAcquired in 2022, expanding Flag's ESG communications capabilities and market presence
• WorkivacoreTechnology or IntegrationOfficial Workiva partner providing implementation, platform optimization, and accelerator solutions for sustainability and regulatory reporting. Developed three new Workiva accelerators in 2026 for gap assessments, EPR data management, and disclosure standardization
• IFRS FoundationcoreStrategic or Co-development PartnerIFRS Sustainability Alliance member, supporting global sustainability reporting standards adoption
• Bureau VeritasminorStrategic or Co-development PartnerIndependent verification partner for client sustainability data assurance (e.g., Nestlé CSV Report)
• GoogleminorStrategic or Co-development PartnerStrategic partnership referenced in Sabre's Travel Positive sustainability strategy
• TravalystminorStrategic or Co-development PartnerStrategic partnership referenced in Sabre's Travel Positive sustainability initiative for responsible travel

Scale indicators5 records

Recent moves7 records

Expansion highlights5 records

Direct peers

• Salterbaxter: Global sustainability communications consultancy specializing in strategy, reporting, and creative work for enterprise brands, including regulated ESG disclosure. Closely comparable to Flag in service mix, target customers, and creative-led positioning.
• Radley Yeldar: Brand, reporting, and engagement consultancy producing annual and sustainability reports for global enterprises. Comparable to Flag on integrated reporting, design-led communications, and large-company client base.
• Futerra: Strategy and communications agency focused on sustainability, climate, and social impact with creative campaigns for major brands. Similar to Flag in combining sustainability strategy with brand storytelling and consumer engagement.
• Corporate Citizenship: Specialist sustainability and ESG consultancy advising global corporations on strategy, reporting, and impact. Closely comparable to Flag in advisory-led ESG services for enterprise clients under CSRD, GRI, and SASB.
• Brite Green: ESG strategy, sustainability reporting, and climate advisory firm for FTSE-listed and global corporates. Overlaps significantly with Flag on regulated disclosure work and capital markets-facing ESG advisory.

Broad incumbents

• ERM (Environmental Resources Management): Global sustainability consultancy offering ESG advisory, reporting, and assurance across industries. Larger and broader than Flag but overlaps on corporate sustainability strategy and disclosure support for multinationals.
• KPMG Sustainability Services: Big Four firm with established ESG advisory, climate, and non-financial assurance practices serving global enterprises. Significant overlap with Flag on CSRD readiness and integrated reporting, though delivered within a much larger portfolio.
• Edelman (Sustainability Practice): Global communications network with a dedicated sustainability and ESG practice offering reporting, purpose, and stakeholder engagement for major brands. Comparable to Flag on narrative, brand, and ESG communications but embedded in a much larger PR firm.

Others

• Workiva: Cloud platform for ESG, sustainability, and regulatory reporting. Not a direct competitor but Flag's core technology partner and adjacent to the agency's service delivery — increasingly enabling AI-powered reporting workflows that could substitute parts of the agency model.

Emerging players

• Watershed: Enterprise sustainability software platform for carbon accounting and ESG data management. An emerging technology competitor that could disintermediate manual reporting work that Flag's reporting practice currently monetizes.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/flag-communication
• Xx.com/flagcomm

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 records

Subsidiaries1 record

Funding overview

Funding rounds1 record

Investors1 record

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 Flag