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Arthur Morriss


Arthur Lloyd Morriss is an associate in the Project Development & Finance practice. 
Arthur advises on a range of energy and infrastructure projects in Europe, the Middle East and Africa, including on project development, financing, mergers and acquisitions and other corporate and commercial matters.


Representative matters

ADNOC on the sale by CEPSA of its entire upstream portfolio of assets in the UAE to TotalEnergies.

The Dow Chemical Company on the $10.5 billion financial and commercial restructuring of its joint venture with Saudi Aramco in relation to the $20 billion world-scale integrated Sadara chemicals complex (including ammonia production) in Saudi Arabia. This was awarded MENA Petrochemicals Deal of the Year at the IJGlobal Awards, 2021.

NEOM Company, Saudi Arabia's new city gigaproject development company, on a $8.4 billion green energy joint venture with ACWA Power and Air Products that will incorporate the region's largest wind and solar renewables production projects (4GW in total), as well as a ground-breaking green hydrogen / green ammonia export project.

PETRONAS on the $28 billion RAPID integrated refinery and petrochemicals project in Pengerang, Malaysia.



Solicitor, England and Wales


University of Law LPC with MSc in Law, Business and Management (Distinction)

University College London LLB (First Class Honours)

A&O Shearman was formed on May 1, 2024 by the combination of Shearman & Sterling LLP and Allen & Overy LLP and their respective affiliates (the legacy firms). Any matters referred to above may include matters undertaken by one or more of the legacy firms rather than A&O Shearman.