Simon Tysoe is a partner in the London office of Gibson Dunn. He is a member of the Mergers and Acquisitions, Energy and Infrastructure, and Oil and Gas Practice Groups.
Simon specialises in transactions in the energy sector and has extensive experience advising clients on a range of cross-border energy and natural resources transactions, including upstream, midstream, and downstream oil and gas M&A, power and renewables M&A, joint ventures, restructuring, and project development. He works with a range of financial investors, strategics, and commodity traders.
Simon is described by Chambers Global 2025 as “Fantastic to work with. He is client-oriented, and he gets deals done in record time,” and “Good for tricky M&A and PE deals and comes up a lot on oil and gas matters.” He is ranked Band 1 in Chambers UK 2025 for Energy & Natural Resources. He is additionally described by Chambers UK 2025 as “Very knowledgeable in his field and on an international level. He has a depth of expertise that is difficult to match.” Simon is described by Legal 500 UK 2025 as “a highly skilled M&A practitioner who regularly advises on the purchase and disposal of conventional and renewable energy portfolios” and “a pragmatic problem-solver and a top lawyer … who you would want by your side when things get complex at the negotiation table.” He is recognised by The Legal 500 UK 2025 as a ‘Leading Individual’ for Oil and Gas.
Simon received his Master of Arts from Lincoln College at the University of Oxford, and he is admitted as a solicitor in England and Wales.
Selected experience*:
Power, renewables and sustainable energy
- RWE on its acquisition of Norfolk Vanguard offshore wind project from Vattenfall
- Igneo Infrastructure on the sale of a stake in the Finerge Iberian renewables platform to AXA
- Energy Capital Partners on the $2.4 billion acquisition of Atlantic’s Sustainable Infrastructure
- Iberdrola on the sale of a stake in East Anglia One offshore wind farm project to Green Investment Bank
- RWE on the sale of a stake in Dogger Bank South offshore wind farm to Masdar
- Triton Power on the sale of UK thermal power plants to SSE
- KKR on its £3.4 billion acquisition of Encavis AG
- Ara Partners on its investment in its partnership to create CycleØ Group, a UK-based biomethane platform, through the acquisition of FNX Liquid Natural Gas, a Spain-based company specializing in biogas capture and conversion
- Apical Group on the acquisition of a 67.65% stake in Bio-Oils Energy, a Spanish biofuel producer
- EIG on its $255 million investment into solar energy company, Prosolia
- Repsol on its acquisition of a 40% stake in Bunge
Upstream Oil and gas
- EIG on its US$19 billion joint venture with Repsol Upstream, a newly-formed global oil and gas exploration and production company
- TotalEnergies on its $1.2 billion acquisition of CEPSA's upstream assets in Abu Dhabi
- TotalEnergies on the US$330 million sale of its German subsidiaries interests in Kazakhstan's Dunga oil and gas field to KMG
- TotalEnergies on its sale of TEPKRI Sarsang, a Denmark-based oil and gas exploration and production company, to ShaMaran Petroleum
- SierraCol Energy (a Carlyle portfolio company) on its US$825 million acquisition of Occidental’s (Oxy) entire onshore oil and gas portfolio in Colombia
- Carlyle International Energy Partners on the acquisition of Shell Upstream Gabon by portfolio company Assala Energy Holdings and its subsequent disposal
- ExxonMobil Corporation on its sale of its entire upstream and midstream asset portfolio in Chad and Cameroon to Savannah Energy plc
- Navitas Petroleum on its acquisition of a 65% stake in the Sea Lion project, an oil field located offshore of the Falkland Islands, via the acquisition of Premier Oil Exploration and Production and participating interests in the field from Rockhopper Exploration
- Chevron on its $1.6 billion sale of its North Sea oil and gas business to Ithaca Energy
Downstream oil and gas and chemicals
- Varo Energy (a Vitol and Carlyle joint venture) on the acquisition of Peem AB, Sweden’s largest oil refiner.
- Vitol on the $2 billion acquisition of Engen Petroleum, a group with a significant Southern African fuels retail network
- ADNOC and OMV on the $13 billion acquisition of Nova Chemicals from Mubadala
- EQUATE Petrochemicals Company on its US$3.2 billion acquisition of MEGlobal International
- Chevron on the US$900 million sale of its refinery and fuels network in South Africa and Botswana to Sinopec
- Chandra Asri on the $800 million acquisition of the Shell Energy and Chemicals Park, Singapore from Shell
- Helios Investment Partners on the US$461.3 million acquisition of a 60% stake in the West African downstream business of Oando
- Helios Investment Partners on its acquisition with Vitol of a majority stake in the West African downstream business of Oando Plc and the formation of OVH Energy
Infrastructure and Transport
- Public Investment Fund of Saudi Arabia on its joint acquisition of a 37.5% stake in Heathrow Airport alongside Ardian
- Corporate aspect of the refinancing of numerous airports including Budapest and Manchester
- GIC on the acquisition of a stake in GasLog an LNG vessel owner and operator
- The buyer on the acquisition of the Isle of Grain LNG regasification and storage facility in the UK
- Bomin Linde LNG in its joint venture with SGD logistika to form Blue Gas maritime bunkering company
- The partners on the acquisition of a 50% stake in VTTI, the energy storage and logistics group
- Total Energies on the sale of Grosstanklager – Olhafer Rostock to Euroports
*Includes matters prior to joining Gibson Dunn
Capabilities
Credentials
Education:
- University of Law - 2000 Diploma in Legal Practice
- University of Law - 1999 Postgraduate Diploma in Law
- University of Oxford - 1998 Bachelor of Arts
Admissions:
- England & Wales – Solicitor