JAMES MACARTHUR is a co-leader of Sidley’s global Energy and Infrastructure practice and heads the Energy, Transportation and Infrastructure team in London. He has more than 20 years of experience acting for corporate and private equity sponsors on European and global deals across the spectrum of private equity, most notably for a number of leading infrastructure funds.
James’ experience covers a wide range of sectors, including energy, digital infrastructure, logistics, transportation, and social infrastructure.
James has received acknowledgement from numerous industry ranking guides, including:
- Legal 500 UK 2026 - Ranked in the “Hall of Fame” for Infrastructure: M&A and Acquisition Financing, where sources note “James MacArthur is an exceptional partner with outstanding commercial judgement, attention to details and will go the extra mile to make sure a deal closes right.”
- Chambers UK 2026 - Ranked for Infrastructure, where clients state “James provides excellent client service and is a safe pair of hands.”
- Chambers UK 2025 - Ranked for Infrastructure, where clients state “James is highly experienced, well networked and is a strong commercial lawyer.”
- Legal 500 UK 2025 - Ranked as a “Leading Individual” for Infrastructure: M&A and Acquisition Financing.
- Chambers UK 2024 - Ranked for Infrastructure, where sources note “James is a uniquely experienced lawyer across private equity infrastructure. He also adopts a commercial approach.”
- Legal 500 UK 2024 - Ranked for Infrastructure: M&A and Acquisition Financing.
Prior to joining Sidley in 2023, James was head of the private equity infrastructure practice of another international law firm.