Mr William Cecil > Haynes and Boone CDG, LLP > London, England > Lawyer Profile

Haynes and Boone CDG, LLP
1 New Fetter Lane

Work Department

Contentious maritime, offshore oil and gas and energy




William has extensive experience in maritime and construction litigation and arbitration matters for clients in the shipping, offshore oil and gas and energy industries. Since 2004, he has been involved in a series of heavyweight international arbitrations. He was the lead partner in an ICC arbitration based in Geneva relating to a power and desalination construction project in the Middle East, an SCMA arbitration based in Singapore relating to a dispute arising out of the upgrade of a semi-submersible drilling rig and two LMAA arbitrations based in London relating to delay and cost over-runs arising out of the construction of two semi-submersible rigs in South Korea. The sums in dispute in each matter were in the region of US$100m. In the LMAA arbitrations William obtained decisions awarding his clients a total of US$33m out of total claims of US$34m, and dismissing the other side’s counterclaims – totalling some US$56m – in full. In 2014, William was heavily involved as the lead partner in CIMC’s claims totalling about US$200m against the Schahin group. Alongside his litigation and arbitration practice, William also assists clients in the drafting and negotiation of various forms of offshore contracts. He has written extensively on marine and offshore construction topics for publications such as Lloyds List, Harts E & P, Petroleum Review and European Oil and Gas, and has lectured on managing litigation risk in high value marine construction projects.


Bristol University (BSc Hons Psychology).

Lawyer Rankings

London > Projects, energy and natural resources > Oil and gas

Haynes and Boone CDG, LLP is active in upstream, midstream and downstream oil and gas work, with a key strength in the LNG sector. The team, which is led by Glenn Kangisser, is regularly instructed by oilfield operators, contractors and insurers on a range of projects, energy transactions and disputes. London managing partner William Cecil handles arbitration matters for clients in the offshore oil and gas and energy industries. Phoebe Anderson, who is dual-qualified to practise in England and Australia, focuses on offshore exploration and production and commercial contracts.

London > Real estate > Construction: contentious

Haynes and Boone CDG, LLP is well known for its expertise in international arbitrations concerning construction, engineering and infrastructure projects. The team is led by Melanie Willems, who heads the international arbitration practice and has particular strength in contractual disputes relating to energy, projects and engineering matters, and head of litigation William Cecil. Other notable team members are Markus Esly and counsel Robert Blackett.

London > Dispute resolution > International arbitration

Haynes and Boone CDG, LLP‘s London-based international arbitration team consistently represents clients in ICC, LCIA and UNCITRAL international arbitrations, as well as in ad hoc proceedings. It also acts in bilateral investment treaty and ICSID arbitrations, and fields sector specialists in the energy and construction industries. As ‘a force to be reckoned with‘, Melanie Willems is international arbitration head, while Markus Esly focuses on energy, projects, construction and infrastructure disputes; William Cecil is litigation head, and counsel Robert Blackett is ‘an excellent lawyer‘.