Legal and regulatory clarity for business in West Africa.
AeT4 is a London-based consultancy advising investors, corporates and public institutions on African law, mining, finance, legislation, property and global regulatory compliance.
Advice in English and French for anglophone and francophone markets
01Who we advise
Advisers to the organisations shaping West Africa’s growth.
We work with clients who need to move with confidence in markets where law, regulation and day-to-day practice don’t always align, and where the cost of getting it wrong is high.
Investors and funds
Private equity, infrastructure and sovereign investors assessing and executing transactions.
Mining and energy companies
Explorers, producers and contractors across the natural resources value chain.
Development finance institutions
DFIs and multilateral lenders structuring, financing and monitoring projects.
Multinational corporates
Businesses entering, expanding or restructuring their operations in the region.
Governments and public bodies
Ministries, regulators and agencies modernising legislation and policy.
Banks and financial institutions
Lenders, payment providers and fintechs navigating licensing and compliance.
02Expertise
Six practice areas. One integrated team.
Most matters in West Africa cut across law, finance and regulation. We bring the relevant disciplines together from the outset, so your advice is joined up and your risks are seen in full.
01
African Law
Practical guidance on the legal systems of sub-Saharan West Africa: common law, civil law under the OHADA framework, and customary law.
Support across the resources lifecycle, from licence acquisition to operation, grounded in each country’s mining code, fiscal regime and community obligations.
Structuring and protecting capital invested in the region, whether it comes from private investors, commercial banks or development finance institutions.
We pair a detailed understanding of West African legal and commercial practice with the rigour expected by UK and international boards, lenders and regulators.
Regional depth
Advice grounded in how laws are applied in practice, not only in how they read on paper.
Cross-system fluency
At home across common-law, civil-law and customary systems, and across anglophone and francophone markets.
Commercial focus
Advice tied to your transaction, timetable and risk appetite, with clear recommendations rather than open-ended memos.
Compliance by design
Every engagement is built to stand up to scrutiny from regulators, auditors, lenders and investors.
How an engagement works
Scope
We define the question, the jurisdictions involved and what a good outcome looks like for you.
Assess
We review the legal, regulatory and commercial position and identify the risks that matter.
Advise
We set out clear options and recommendations, with the trade-offs made explicit.
Deliver
We support execution through negotiations, filings, approvals and ongoing compliance.
04Coverage
Where we work
Our focus is sub-Saharan West Africa, together with the regional and international frameworks that shape cross-border business there.
Common-law jurisdictions
Anglophone systems rooted in the common-law tradition.
Nigeria
Ghana
Sierra Leone
Liberia
The Gambia
OHADA jurisdictions
Civil-law systems under the OHADA Uniform Acts.
Côte d’Ivoire UEMOA
Senegal UEMOA
Mali UEMOA
Burkina Faso UEMOA
Niger UEMOA
Benin UEMOA
Togo UEMOA
Guinea-Bissau UEMOA
Guinea
Other West African jurisdictions
Civil-law systems outside OHADA.
Mauritania
Cabo Verde
Extraterritorial regimes
Laws that follow your business into the region.
United Kingdom Bribery Act · Sanctions
United States FCPA · OFAC
European Union Sanctions · Due diligence
Regional frameworks
OHADA
ECOWAS
UEMOA / WAEMU
AfCFTA
International standards
FATF Recommendations
EITI Standard
IFC Performance Standards
OECD Guidelines for MNEs
UN Guiding Principles
05Insights
Briefings
Short, practical notes on the developments that matter to business in the region, available to clients and on request.
Global Compliance
Failure to prevent fraud: what the UK’s new corporate offence means for Africa-facing businesses
In force since 1 September 2025, the offence applies to large organisations and can capture fraud by employees, agents and subsidiaries, including overseas where there is a UK nexus. We outline the “reasonable procedures” defence and what it means for West African operations.
Local content in West African mining codes: planning for procurement, employment and ownership rules
Local content obligations increasingly shape project economics. We compare how requirements are framed across key mining jurisdictions and what investors should build into their plans from the start.