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Peter is a Partner and former Chair of the Africa Practice, and is based in London.

During the last decade International Who's Who of Mining Lawyers, BestLawyer, Legal500 EMEA, Chambers and Partners and other peer reviewed global legal directories have consistently identified him as one of the world's pre-eminent mining lawyers and in 2021 named him "as one of the top mining lawyers in the world" (Who's Who Legal: Mining 2021) and recently Chambers Global Guide: Energy & Natural Resources: Mining 2022 ranked Peter in Band 1 with sources stating that " He brings solutions to issues you wouldn't think of, bringing to bear relevant experience from right across Africa."

Peter excels in helping resolve contentious issues arising from mining projects and related developments in Africa.  His areas of expertise include crisis management, resource nationalism, mineral and petroleum regulation in developing countries (including international best practice) black economic empowerment and indigenisation law, international investment law and investment protection.

Owing to Peter's expertise he has significant experience in resource regulatory issues across Anglophone Africa.  As a consequence, he regularly advises clients on an array of contentious matters involving States in sub-Saharan Africa, including disputes arising from the negotiation and implementation of major mine development agreements.  He is also well versed in the sub-Saharan African geopolitical climate and accordingly provides strategic advice not only on issues related to the mineral regulatory framework but also on how to navigate the framework within the prevailing economic and political conditions in key African mining jurisdictions.  He is particularly skilled in crisis management and has provided expert advice on an urgent basis to clients to assist them in managing and mitigating significant country risks. 

Peter’s experience also includes the Middle East where he has recently represented the Kingdom of Saudi Arabia as international legal counsel on the Ministry of Industry and Mineral Resources’ mineral law reform project.  In this regard, Peter led a team of Herbert Smith Freehills lawyers who advised the Ministry on the full suite of implementing regulations and guidelines supporting the recently promulgated Mining Investment Law, 2020, which came into force in January 2021. The project entailed providing advice on international best practice in the mining sector, drafting detailed regulations to supplement the Mining Investment Law, 2020, and preparing the different sets of guidelines which will complement the regulations.

Peter is an accomplished speaker and a regular presenter and panellist at conferences, courses and Parliamentary hearings in South Africa and internationally.  He has also written extensively on the topics of mining, resource nationalism, the regulation of foreign direct investment, and black economic empowerment and indigenisation law.   He was a council member of the Legal Practice Division of the International Bar Association responsible for the Africa Regional Forum, the chair of the International Bar Association’s mining law committee advisory board and is an honorary lecturer at the University of Dundee in Scotland's Centre for Energy, Petroleum and Mineral Law and Policy.

Background

Peter holds a LLM (first class honours) and Diploma in Comparative Legal Studies from the University of Cambridge. Additionally, he has an LLB (cum laude) and a BA (awarded with distinction in Roman Law) from the University of Cape Town. He was elected as senior scholar of Christ's College, Cambridge and is a council member of the Legal Practice Division of the International Bar Association responsible for the Africa Regional Forum and the section for energy, natural resources and infrastructure law.

Experience & expertise

Selected matters

Investment treaty negotiations

  • Lotus Resources Limited in negotiations regarding a new mineral development agreement for the Kayelekera Uranium Mine and related advice (the MDA was successfully concluded in 2024)
  • Peter Leon led the IBA's working group which developed the Model Mine Development Agreement

Law reform programmes and standards

  • A multinational mining company and the Islamic Republic of Pakistan on a potential roadmap for federal mineral law reform programme
  • The Kingdom of Saudi Arabia as international legal advisor on the Ministry of Industry and Mineral Resources’ mineral law reform project
  • A wholly owned subsidiary of the Public Investment Fund on the mineral law and strategic implementation aspects of a new city development in the Kingdom of Saudi Arabia
  • Ministry of Industry and Mineral Resources on the regulation of illegal mining activities in the Kingdom of Saudi Arabia 
  • International Council on Mining and Metals on its Scope 3 Target Setting Guidance
  • International Council on Mining and Metals on its Nature Position Statement and subsequent engagements with stakeholders including UNESCO
  • The Government of Sierra Leone on the draft Environment Protection (Mines and Minerals) Regulations, 2023 to be published under the Environment Protection Agency Act, 2022.
  • The International Lawyers Project (on a pro bono basis) and the Green Hydrogen Organisation on aspects of the latter's model green hydrogen contracts project

Mining companies on subject matter which could be regulated under investment treaties

  • A multinational mining company on the international trade law consequences of a proposed export tax and local beneficiation requirements, including potential breaches of the GATT and Economic Partnership Agreements between the EU and SADC and the UK and SACU.
  • Multinational mining companies on matters related to the Global Industry Standard on Tailings Management
  • MA'ADEN (Saudi Arabian Mining Co.) on various matters related to the Kingdom of Saudi Arabia's new mineral law regime
  • A confidential bidder on the Kingdom of Saudi Arabia's competitive licensing round for the Umm ad Damar Site 
  • A confidential bidder on the Kingdom of Saudi Arabia's competitive licensing round for the Khnaiguiyah Site
  • A confidential multinational transportation and logistics company with operations in road, rail, sea, air and warehousing on a property dispute, contract negotiations, and engagements with the United Nations Organization Stabilization Mission in the Democratic Republic of the Congo (MONUSCO) in the Democratic Republic of Congo
  • a globally diversified natural resources company on disputes with the Government of Zambia including developing facilitating an international advocacy strategy which includes engagements with various governments, international non-governmental organizations and international financial institutions and is focussed on addressing Zambia's slide into fragility
  • a multinational mining company on the investment protection mechanism provided under the Mauritius-South Africa bilateral investment treaty and the associated requirements
  • Some of the largest multinational private security companies on the divestiture and localisation requirements imposed under South Africa's Private Security Industry Regulation Amendment Act, 2014.