MDY Legal

What MDY Legal does

MDY Legal (legal entity: Marriott Davies Yapp LLP) is a specialist, multidisciplinary law firm founded in 1987 in London, authorised and regulated by the Solicitors Regulation Authority (SRA No. 567044). It provides legal advisory, governance and consulting services across corporate and commercial law, finance, charity and NGO advisory, public procurement and employment law, with a particular focus on international development and the UK third sector. Its client base consists of UK Government departments (notably FCDO/DFID), bilateral donors, multilateral organisations, development finance institutions (PIDG, GuarantCo, EAIF, EADB, FSD Africa, CDC Group, Global Parametrics, REPP) and charities and NGOs operating in or from developing countries.

The firm's service architecture is organised in three pillars — Legal Services, Governance Services (governance advice, corporate secretariat, grant management, impact monitoring and evaluation) and Consulting Services — delivered as a unified advisory engagement rather than a platform-with-modules product. There is no proprietary technology stack; engagements are handled by senior solicitors and consultants and monetised through bespoke professional fees, retainers and consortium participation in multidisciplinary bidding teams (for example, the PwC-led GCIEP Alliance and the prior ICED consortium).

Revenue is generated through fee-for-service legal and governance advisory work for institutional clients, including recurring corporate secretariat and grant management mandates (e.g., PIDG Central Management Office and TAF, HANSHEP Secretariat) and one-off transactional mandates on development financing structures (GuarantCo establishment, IFFIm, Advance Market Commitment, CDC governance review, FSD Africa / Sofala, EADB documentation). Pricing is bespoke and not publicly disclosed, and go-to-market relies entirely on specialist reputation, long-standing institutional relationships and consortium positioning rather than marketing or channel sales.

Name

MDY Legal

Legal name

Marriott Davies Yapp LLP

Website

https://mdy.co.uk

Company type

Private

Founded year

1987

Operating status

Operating

Headcount range

1–10 employees

Short description

MDY Legal is a London-based specialist law firm (founded 1987, SRA-authorised) providing legal, governance and consulting advisory to governments, development finance institutions and NGOs in the international development and third sectors.

Ownership category

akta.pro rank

Product category

Legal Services

NAICS

Offices of Lawyers (54111), Legal Services (5411), All Other Legal Services (541199)

SIC

Services-Legal Services (8111), Services-Management Services (8741)

akta.pro primary industry

Corporate & Commercial Law (BPAHAAAA)

Keywords

• Legal advisory services
• International development law
• Governance consulting
• Development finance advisory
• Public procurement law

Headquarters

HQ city

London

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales

Revenue model

1. Legal Advisory Services: MDY Legal provides specialist legal advice on structuring, establishment, public procurement and financing of social and economic development initiatives. Revenue is generated through professional legal fees for advisory engagements, likely billed on a project or retainer basis as a law firm serving institutional clients.
2. Consulting Services: MDY Legal delivers consulting services for a wide range of development projects, including programme management, governance design, and institutional development. These are typically fee-for-service engagements, often commissioned by bilateral donors, multilateral organisations, or development programmes.
3. Grant Management and Governance Services: MDY Legal provides grant management, corporate secretariat, and monitoring & evaluation services to development finance institutions and multilateral donors. These ongoing service arrangements generate recurring professional services revenue.

Pricing tiers

Go-to-market motion2 records

Distribution channels2 records

Marketing channels5 records

Core offering

MDY Legal is a multidisciplinary law firm providing specialist legal advisory and governance services for international development. The firm advises on the structuring, establishment, public procurement, and financing of social and economic development initiatives for governments, development finance institutions, multilateral organisations, charities, and NGOs. Services span legal advisory (corporate, commercial, finance, charity/NGO, procurement, employment law), governance (corporate secretariat, grant management, impact monitoring and evaluation), and consulting services for development projects.

Product overview

MDY Legal is a multidisciplinary law firm providing legal advisory and governance services as a unified offering rather than a platform-plus-modules architecture. The firm operates across three main service pillars: Legal Services (corporate and commercial, finance, charity and NGO, procurement, and employment law), Governance Services (governance advice, corporate secretariat, grant management, and impact monitoring and evaluation), and Consulting Services for international development projects. These services work in conjunction to provide comprehensive advisory support for social and economic development initiatives, particularly for governments, development finance institutions, and NGOs in the UK and developing countries.

Differentiator

Problem solved

Functional benefit

Products and services

• Legal Services Core legal advisory services for international development projects, covering corporate and commercial law, finance, charity and NGO advisory, procurement, and employment law. For governments, development finance institutions, multilateral organisations, charities, and NGOs in the UK and developing countries.
• Governance Services Organisational governance advisory including governance advice, corporate secretariat, grant management, and impact monitoring and evaluation services. Helps organisations manage risk and deliver accountability, impact and value for money.
• Consulting Services Project consulting services including accountability for donor funds, design of new initiatives, legal and governance components for business cases, and institutional development support for a wide range of international development projects.

Quantifiable outcome

• $4,665.5 million of infrastructure investments enabled through GuarantCo
• +8 more outcomes

Named customers15 records

Segments8 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

24 partnerships are on record, tiered core, significant and minor.

• PwC (as Alliance Lead for GCIEP)coreStrategic or Co-development Partner · 1 January 2023MDY Legal is a core partner in the FCDO-funded Green Cities, Infrastructure and Energy Programme (GCIEP), which is managed by a PwC-led Alliance that also includes Mott Macdonald, Adam Smith International, Engineers Against Poverty, and MDY Legal. GCIEP is one of five 'Centres of Expertise' created by the UK Government, launched in 2023, focusing on policy support, technical assistance, and capacity building for responsible, inclusive, low-carbon infrastructure in developing countries.
• Mott MacdonaldcoreStrategic or Co-development Partner · 1 January 2023Mott Macdonald is a member of the PwC-led Alliance for the Green Cities, Infrastructure and Energy Programme (GCIEP), alongside MDY Legal and other consortium partners. The programme focuses on delivering responsible, inclusive, low-carbon and climate resilient infrastructure in low and middle-income countries.
• Adam Smith InternationalcoreStrategic or Co-development Partner · 1 January 2023Adam Smith International is a member of the PwC-led Alliance for GCIEP. The programme operates in alignment with the UK Government's International Development Strategy and focuses on policy support, technical assistance, and capacity building for infrastructure development in developing countries.
• Engineers Against PovertycoreStrategic or Co-development Partner · 1 January 2023Engineers Against Poverty is a consortium partner in the PwC-led Alliance delivering GCIEP, alongside MDY Legal. The programme harnesses UK expertise and finance together with deep local partnerships to deliver improved infrastructure and investment in partner countries.
• Lion's Head Global PartnerssignificantStrategic or Co-development PartnerMDY Legal worked with Lion's Head Global Partners, an investment bank operating across frontier and emerging markets, to complete a wholesale review and redrafting of the East African Development Bank's template lending and security documents and procurement guidelines. This was a collaborative advisory engagement.
• PwC (ICED Consortium Lead)coreStrategic or Co-development PartnerMDY Legal was part of the ICED (Infrastructure & Cities for Economic Development) consortium from 2015-2018, led by PwC and including Adam Smith International, Arup, Engineers Against Poverty, International Institute for Environment and Development, and Social Development Direct. ICED was a DFID-funded facility supporting sustainable, inclusive growth-enhancing infrastructure.
• PIDG Technical Assistance Facility (TAF)coreStrategic or Co-development PartnerMDY Legal provides management services for PIDG's Technical Assistance Facility (TAF), a grant fund within the PIDG Trust that provides grants through PIDG Companies to support capacity building and upstream preparation for infrastructure projects. MDY manages the review of all grant applications and oversees the TAF grant cycle, including USD $74 million of donor grants and over 160 technical assistance grants.
• PIDGcoreStrategic or Co-development PartnerMDY Legal has provided results measurement services to the Private Infrastructure Development Group (PIDG) since its inception in 2002. Work has covered every aspect of monitoring and evaluation, including theories of change, KPIs, and impact data management for over 154 infrastructure projects. MDY also manages PIDG's Central Management Office and Programme Management Unit.
• HANSHEP (Harnessing Non-State Actors for Better Health for the Poor)coreStrategic or Co-development PartnerMDY Legal provides Secretariat services to HANSHEP, a high-level donor and government consortium focused on harnessing non-state actors to deliver better health for the poor. MDY has managed HANSHEP's grant funding to health sector projects since December 2010.
• LISI (Legal Impact Investment Ecosystem)significantGTM or Marketing PartnerMDY Legal is a Public Supporter of LISI's Funds Impact Term Sheet (Funds ITS), an open-source legal initiative focused on embedding impact at the fund level. MDY supports this initiative as part of their commitment to a transparent, collaborative, and mission-driven legal ecosystem.
• The Chancery Lane ProjectsignificantStrategic or Co-development PartnerMDY Legal's Diane Harris participated in a podcast with The Chancery Lane Project and Sullivan & Worcester LLP, discussing the drafting of Rose's Clause — a legal clause for transaction documents to address climate change safeguards in construction projects and encourage whole-life decarbonisation management plans.
• East African Development Bank (EADB)significantImplementation/ SI/ Consulting PartnerMDY Legal worked with Lion's Head Global Partners to complete a wholesale review and redrafting of EADB's template lending and security documents, procurement policy and guidelines. Work covered bilateral and syndicated lending arrangements and trade finance activities to facilitate production, export and sale of goods and services.
• FCDO (Foreign, Commonwealth & Development Office)coreImplementation/ SI/ Consulting PartnerMDY Legal is a core partner in the FCDO-funded GCIEP programme and has advised FCDO on multiple significant transactions, including its contribution to IFFEd (£180 million) and its investment in CWUIC ($25 million). The firm has advised the UK Government's development department for over three decades.
• FSD AfricasignificantImplementation/ SI/ Consulting PartnerMDY Legal advised FSD Africa on its acquisition of a 25% shareholding in Sofala Capital for £1.6 million. This investment supports the expansion of accessible housing finance across sub-Saharan Africa, with £850,000 equity invested in Sofala's two operating businesses — Zambian Home Loans and iBuild Home Loans.
• GuarantCocoreImplementation/ SI/ Consulting PartnerMDY Legal advised on the establishment of GuarantCo and has provided regular governance and legal advisory support since. GuarantCo has 41 projects in 17 countries, enabled $4,665.5 million of investments, provided 38 million people with improved access to infrastructure, and created 212,263 jobs since 2006.
• Emerging AfricasignificantImplementation/ SI/ Consulting PartnerMDY Legal advised on the establishment of Emerging Africa and has provided legal and governance advice for more than 15 years on development capital funding, operational matters, fund raising, and the public tendering of outsourced management arrangements.
• Renewable Energy Performance Platform (REPP)significantImplementation/ SI/ Consulting PartnerMDY Legal supported the establishment of REPP, which has developed a portfolio of 16 renewable energy projects in Sub-Saharan Africa. These projects have provided 3.5 million people with first-time or improved energy access based on reducing the cost of finance and improving access to capital.
• Global ParametricsminorImplementation/ SI/ Consulting PartnerMDY Legal advised on all aspects of the legal structure, governance and operations of Global Parametrics, a for-profit social venture seeking to catalyse markets for Financial Disaster Risk Management solutions in low and middle-income countries, as part of a multidisciplinary team.
• Rights and Resources Initiative (RRI)minorImplementation/ SI/ Consulting PartnerMDY Legal supported RRI, a global coalition supporting forest and land policy reform, to identify a suitable location and structure for a new Land Tenure Facility, reviewing characteristics of five potential locations for ease of doing business, legal, regulatory and tax issues.
• The Vaccine AlliancesignificantImplementation/ SI/ Consulting PartnerMDY Legal provided a multidisciplinary team with specialist skills in health financing and legal and governance issues to support The Vaccine Alliance (GAVI) in making changes to their legal and governance structure to simplify programme approval decision making.
• Riverhill Partners LLPminorStrategic or Co-development PartnerMDY Legal worked with financial specialists from Riverhill Partners LLP to design and implement an end-to-end procurement process for new fund managers of EAIF and GuarantCo, including a transparent, competitive tender exercise and evaluation through to contract award.
• CDC Group plcsignificantImplementation/ SI/ Consulting PartnerMDY Legal worked with DFID on the review and update of the legal, governance and control framework for CDC Group plc, the UK's development finance institution, including redrafting investment policy and governance documents and updating CDC's articles of association.
• Crown AgentsminorImplementation/ SI/ Consulting PartnerMDY Legal provided Crown Agents with legal advice on many aspects of TUPE in the context of business transfers and service provision changes. Crown Agents operates in nearly 100 countries.
• Global Innovation Fund (GIF)minorImplementation/ SI/ Consulting PartnerMDY Legal assisted the Global Innovation Fund, a non-profit innovation fund headquartered in London with an office in Washington D.C., in recruiting its executive team, preparing model employment contracts and HR policies and procedures.

Scale indicators7 records

Recent moves7 records

Expansion highlights5 records

Broad incumbents

• White & Case: Global law firm with a leading project finance and development practice, active in emerging market infrastructure and DFI lending. Comparable in mandate type to MDY though much larger in capacity.
• Allen & Overy (A&O Shearman): Magic Circle firm with one of the most active development finance practices globally, advising DFIs, sovereigns and multilaterals on flagship financing structures. Comparable to MDY in mandate type though much larger in capacity.
• Herbert Smith Freehills (HSF Kramer): Global law firm with strong project finance, infrastructure, and development practices. Competes for the same DFI and infrastructure mandates MDY supports on establishment and ongoing governance.
• Linklaters: Magic Circle firm with a global project finance and capital markets practice that routinely advises on the development finance vehicles MDY is involved in, including sovereign-backed issuances and multilateral facilities.
• Clifford Chance: One of the world's largest law firms with a market-leading project finance and development finance practice. Competes with MDY for major DFI, multilateral, and sovereign-backed financing mandates where MDY often participates as a niche co-counsel.
• Latham & Watkins: US-headquartered global firm with a premier project finance practice that routinely acts on development finance and blended-finance transactions. Operates as both competitor and consortium partner in FCDO-type work.
• Ashurst: International law firm with a strong project finance and development practice advising lenders, sponsors, and DFIs on emerging-market infrastructure deals. Comparable to MDY's practice areas in finance and infrastructure-related development mandates.
• Hogan Lovells: Global law firm with a dedicated development finance and impact practice advising DFIs, multilaterals and governments. Overlaps directly with MDY's mandate set while operating at significantly greater scale.

Direct peers

• CMS (formerly CMS Cameron McKenna): International law firm where MDY's senior partners (Davies, Yapp) trained before joining MDY in 1990-1993. CMS competes for the same UK/international development finance mandates and has a comparable corporate-commercial practice serving similar institutional clients.
• Bates Wells: UK mid-sized law firm with a leading charity, social enterprise, and impact-focused practice. Comparable to MDY in combining corporate/commercial advisory with charity, governance, and impact-oriented work for institutional clients.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/mdy-legal?trk=cws-cpw-coname-0-0

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles9 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 MDY Legal