Firm Profile > Haynes and Boone CDG, LLP > London, England

Haynes and Boone CDG, LLP
1 New Fetter Lane

Oil and gas Tier 3

Haynes and Boone CDG, LLP's practice, under the leadership of Glenn Kangisser, has expanded its bench strength in the energy sector with the recent recruitment of Rob Patterson from Vinson & Elkins RLLP, who brings over 25 years of experience in energy-related projects and transactions. The firm also retains a strong offering in offshore drilling matters and exploration and production work. Corporate partner Anna Nerush is also of note, as is William Cecil and Melanie Willems for high-end energy disputes. Associate Phoebe Anderson is recommended for commercial contracts.

Practice head(s):


‘Very detailed knowledge of the oil and gas sector and in particular the drilling industry. Second to none in that respect.’

‘Glenn Kangisser is very thorough and always delivers solid advice which has been thought through. He is accessible and a pleasant chap with a great legal mind.’

Key clients

Stena Drilling Ltd

Stolt- Nielsen

Stena LNG

Valaris plc


TMS Cardiff Gas

Shipping Tier 4

Haynes and Boone CDG, LLP is noted for its work in the shipbuilding space, including advising on financing, transactions, and construction related to ships. The firm's work in this area encompases matters relating to superyachts, tankers, FPSOs, FLNG platforms, and dry bulk carrier vessels. The team is now led by Andreas Silcher, an FLNG specialist, and, who handles a diverse range of transactional matters. Other key figures in the team include the hugely experienced senior counsel Simon Curtis and William Cecil, who acts extensively in shipbuilding litigation.

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‘This department serves a niche market and they are real experts in their nice. Further, the team is extremely hands-on and has a practical mindset that really serves the industry very well.’

‘Andreas Silcher has wide knowledge, is very practical and hands-on.’

‘Mark Johnson is cooperative and proactive in his advice.’

‘Andreas Silcher and Mark Johnson are highly experienced, personable and sensible. They follow instructions diligently, offer commercial and constructive suggestions and have a deep understanding of the market in which they are operating – and tailor their work accordingly. They are excellent at prioritising work within the team – and identifying/delegating the correct team-member to carry it out.’

‘Andreas Silcher is an outstanding lawyer covering a wide spectrum of shipping law. His professionalism, integrity, honesty, and commercial understanding are unparalleled.’

‘Andreas Silcher is clearly an expert in his field and adept at providing excellent and knowledgeable legal advice whilst also always being mindful of the commercial context within which such advice is given and the decisions that are required to be made by the business. He is responsive, efficient and a pleasure to work with.’


Key clients

TMS Cardiff Gas Ltd

The Ministry of Finance of Trinidad and Tobago

National Infrastructure Development Company of Trinidad and Tobago

The Ministry of National Security of Trinidad and Tobago

Kuwait Oil Tanker Company


International Seaways


Stena LNG

ESL Shipping Finland

Olympic Shipping

Avenir LNG

Damen Shipyards

Stena Drilling Limited

LNG Ships Inc.

Kawasaki Heavy Industries

Construction: contentious Tier 5

US firm Haynes and Boone CDG, LLP is prominent in the offshore energy and construction field, primarily resolving disputes through international arbitration. Melanie Willems and William Cecil jointly lead the team. Willems heads up the firm's international arbitration group but is also experienced in litigation and expert determination; she is active on matters across Europe, the Middle East and Africa. Markus Esly focuses on infrastructure and energy disputes and is noted for his broad dispute resolution experience.

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International arbitration Tier 5

Haynes and Boone CDG, LLP's London team conducts arbitrations under all major institutional rules (ICC, LCIA, UNCITRAL) and acts in PIL matters (BIT and ICSID arbitrations). Its disputes sector experience covers the offshore and marine construction, energy (particularly oil and gas) and construction sectors. Melanie Willems is London head of international arbitration; William Cecil is London litigation and disputes head; and both Markus Esly and counsel Robert Blackett focus their practices on international arbitration.

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‘Melanie Willems is great, full of verve, always charging forward for her clients. Markus Esly is thoughtful, considerate, intelligent.’

‘Very attentive individuals and always revert quickly. As we have used this firm for many years, we have built up a good relationship with the key partners, so these people understand our business well and can guide us well.’

The firm: Haynes and Boone, LLP is a full service international commercial law firm with 600 lawyers, providing a full spectrum of legal services in 18 offices spanning Texas, New York, California, Charlotte, Chicago, Denver, San Francisco, Washington DC, London, Mexico City and Shanghai. The firm is ranked among the largest US-based firms and was recognised for excellence in the BTI Consulting Group’s 2021 “A-Team” report, which identifies the law firms that in-house counsel commend for providing superior client service. The London office offers transactional and dispute resolution lawyers with deep industry knowledge and strong commercial sense and has core strengths in corporate, energy, finance, international dispute resolution and shipping. The London lawyers partner seamlessly with their colleagues across the firm and counsel clients worldwide. Many of the firm’s lawyers have international backgrounds; the lawyers in London offer fluency in 13 languages.

Types of work undertaken
Energy: in the energy industry, the firm serves domestic US and international oil companies with global development interests, independent oil and gas producers, offshore oilfield service contractors and equipment companies, as well as large commercial lenders, hedge funds and private equity firms in the energy sector. The firm’s experience extends from upstream licensing arrangements through the exploration, production and transportation of oil and gas. The firm advises clients on the operational issues involved in the extraction, processing and transportation of these products and on the procurement, construction and installation of offshore drilling and production facilities and transportation pipelines and LNG. We also advise on the renewables industry with specific experience in solar, wind and biomass projects.

Shipping: the firm has significant experience in the provision of legal advice in relation to shipbuilding and ship conversion projects of all kinds. Senior counsel Simon Curtis and partner William Cecil are co-authors (together with Ian Gaunt, president of the London Maritime Arbitrators Association 2017-2020) of the fifth edition of the leading textbook on shipbuilding contract law, ‘The Law of Shipbuilding Contracts’, published by Informa Law from Routledge, 2020. The firm is continuously involved in a wide range of newbuilding projects and disputes and its maritime clients include shipowners, charterers, classification societies, engineering consultants, private equity and other financial services companies, shipyards and insurers, covering the full spectrum of commercial shipping. We also have substantial experience in the construction and employment of passenger ferries, cruise ships and superyachts. For LNG projects, the office brings together project development, construction, transportation and gas supply experience on behalf of developers, suppliers and shippers.

Corporate: the firm’s corporate lawyers possess extensive experience in mergers and acquisitions, joint ventures, capital markets transactions, IPOs, takeovers and related shareholder issues spanning both public and private transactions across a broad range of industries. In addition, the London office expands the international reach of the firm’s private equity and venture capital capabilities, which include helping clients structure and organise fund sponsors and investment funds as well as representing entrepreneurs, start-ups, early-stage companies and emerging growth companies in structuring, negotiating and closing all forms of venture financings. It regularly provides its clients with advice on entity formation, funding strategies, IP strategies and general corporate matters.

Finance: the firm’s global finance practice offers the range of skills that the firm’s clients demand. Its partner-led approach, experience and versatility offer clients a first-class service, embracing both technical quality and commercial awareness. The firm has extensive experience in fund finance, acquisition finance, refinancings, corporate facilities, real estate finance and financial institutions lending (including non-bank lenders and insurance), in each case across a broad range of industry sectors. It regularly advises financial sponsors, lenders, borrowers, investors, fund managers and central banks in relation to those core areas.

Project finance: our project finance and development practice group includes experience across all major disciplines that affect a client’s investment throughout the project’s life – from early-stage development and regulatory issues through financing, mergers, acquisitions, restructurings and public offerings. Our work includes representation of lenders, borrowers, risk insurers, investors, sponsors and contract parties in projects utilising a broad spectrum of financing arrangements, including commercial bank and institutional lender construction and term loan facilities; so-called “term loan B” financings, letter of credit facilities; mezzanine and high-yield financings; capital markets issuances of debt and equity; securitisation and structured finance techniques; and utilisation of products and services from multilateral institutions, export credit agencies and national/regional development and aid agencies.

International dispute resolution: we have a substantial team of English law-qualified disputes lawyers, with a long and distinguished record of representing clients in court and arbitral proceedings and in other forms of dispute resolution (for example, adjudication, expert determination and mediation). Our London-based international dispute resolution lawyers act for clients in ad hoc arbitrations and in those administered by the leading institutions, including the International Chamber of Commerce (ICC), the London Court of International Arbitration (LCIA) and the International Centre for Dispute Resolution (ICDR). We act for clients in the various divisions of the English Courts, in particular the Commercial Court and the Technology and Construction Court. Although our clients are derived from a wide range of industries, we have built a formidable reputation acting for clients in the offshore oil and gas, shipping and infrastructure sectors. We also represent investors in disputes with host governments or states under bilateral investment treaties (e.g., ICSID arbitrations).

Department Name Email Telephone
Managing Partner William Cecil T +44 (0)20 8734.2837
Shipping Andreas Silcher T +44 (0)20 8734.2810
Dispute resolution William Cecil T +44 (0)20 8734.2837
Finance Emma Russell T +44 (0)20 8734.2807
Corporate Tom Ferns T +44 (0)20 8734.2804
International Arbitration Melanie Willems T +44 (0)20 8734.2869
Project Finance Myles Mantle T +44 (0)20 8734.2869
Energy Glenn Kangisser T +44 (0)20 8734.2814
Photo Name Position Profile
Mr James Brown  photo Mr James Brown Partner
Mr William Cecil  photo Mr William Cecil Partner
Mr Simon Curtis  photo Mr Simon Curtis Senior Partner
Mr Andreas Dracoulis  photo Mr Andreas Dracoulis Partner
Mr Glenn Kangisser  photo Mr Glenn Kangisser Partner
Mr Bradley J Richards  photo Mr Bradley J Richards Partner
Mr Andreas Silcher  photo Mr Andreas Silcher Partner
Number of UK partners : 14
Number of other UK fee-earners : 15
Chinese (Cantonese
Chinese (Mandarin)