London
Our key people include:
Legal Team
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Arianne Elise KingChief Executive Officer
Arianne Elise King
LLB, Solicitor, Higher Rights of Audience
Arianne is a Solicitor Advocate who specialises in commercial disputes resolved through litigation, arbitration, adjudication and mediation. She has acted for both domestic and international clients in respect of a wide array of complex, high-value disputes. She has experience in acting for clients in a broad range of practice areas, including: Alternative Dispute Resolution; Banking and Finance; Commercial Litigation; Company and Commercial; Construction and Engineering; Corporate and Mergers and Acquisitions; Cross-border Disputes; Employment; Energy; Infrastructure; Insolvency; International Arbitration and Regulation and Compliance.
Arianne was named “Most Influential Woman in Commercial Law 2019 – UK” in Acquisition International’s Global Excellence Awards.
Arianne has considerable experience of construction and engineering, energy and infrastructure disputes and has acted for domestic and international clients, including employers, contractors and subcontractors in connection with disputes arising out of the construction of oil and gas pipelines, process plants and other large-scale infrastructure projects.
She also experience in advising on non-contentious matters and has advised in relation to several high-value, cross-border acquisitions, distribution agreements and a other commercial arrangements. In the construction and engineering sector, she is experienced in providing contract reviews, contract drafting and negotiations of bespoke contracts, professional appointments and collateral warranties.
Arianne is familiar with the law of the DIFC and legal and business practice in the UAE and East Africa.
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Dr Julian CritchlowHead of Legal Practice
Dr Julian Critchlow
LLB, MSC, PHD, FCI Arb, Solicitor, Arbitrator, Registered Adjudicator, Accredited Mediator
Julian has over 30 years’ experience of commercial dispute resolution. During his career, Julian has been involved in a considerable range of general commercial matters, both nationally and internationally, including in respect of loan agreements, bonds and guarantees, and commission agreements.
He is an acknowledged expert in construction disputes. He has also represented defendants in white collar criminal cases. Recent examples of his work are the representation of a US company concerning a US$ 200m ICC arbitration arising from a gas pipeline laying operation off the coast of Trinidad and Tobago and, in an LCIA arbitration, defending a call on a guarantee given by an overseas client respecting the purchase of a multi-million pound yacht. He also has recent expertise of representing overseas clients whose funds have been frozen pending investigation pursuant to the Proceeds of Crime Act 2002.
In addition to acting for the parties to disputes, Julian sits as an arbitrator, primarily in the international forum, notably pursuant to the DIAC and ICC Rules. As well as being a Fellow of the Chartered Institute of Arbitrators, he sits as a TeCSA registered adjudicator, as a CEDR accredited mediator, and as a dispute resolution board member for a major oil project. As well as dispute work, Julian also has considerable experience of contract drafting, largely, but not limited, to the construction industry, and he is fully familiar with all principal forms of construction contract.
Julian has been included as a leading lawyer in Chambers and Legal 500 for many years, Chambers recently stating that his clients are impressed by his “extensive knowledge, sound judgement, clear explanation and astute tactics” and legal 500 that he has “superb technical expertise”.
Having read law at University College London, Julian subsequently took an MSC and PHD from King’s College London, his doctor’s thesis investigating aspects of arbitration.
Julian regularly lectures and writes on arbitration and construction law, including authorship of Arbitration Forms and Precedents (jointly with Professor Rob Merkin). He also tutors students concerning their dissertations for the MSC course in Construction Law and Dispute Resolution at King’s College London.
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Joshua KempSenior Associate
Joshua Kemp
Josh specialises in domestic and international building and construction disputes resolved through litigation, arbitration, adjudication and expert determination. He has acted in litigation for many of Australia’s largest commercial building, and engineering construction contractors and has conducted a high number of adjudications spanning commercial construction, public infrastructure, construction in energy and resources industry.
Josh has vast experience in advising on both contentious and non-contentious matters and has worked to resolve numerous high-value disputes for major contractors and engineering groups. He also has considerable experience in non-construction related commercial disputes, and has acted in multi-party litigation involving commercial parties and professional indemnity insurers.
Josh is particularly skilled in conducting medium and large-scale construction disputes, and has been consistently named as a Leading Construction Litigation Lawyer in his native jurisdiction, having previously been a principal of a leading law firm specialising in construction, development and infrastructure and a senior associate of a global firm.
Having read law in his native state Queensland, Josh subsequently studied The Master of Laws and was admitted as a legal practitioner in 2007.
In 2019 Josh was sworn in as an attorney of the Supreme Court of the State of New York.
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Carl AsserHead of Construction
Carl Asser
Carl is a construction lawyer with extensive experience in drafting and negotiating procurement documentation, building contracts, professional appointments, development agreements and security documentation for employers, developers, occupiers, investors and banks.
Recent projects of note which Carl has lead on are all construction and procurement related aspects of One Hyde Park (the World’s most expensive apartments), the refurbishment of the Savoy Hotel, the construction of Headquarter buildings for Motorola and Computer Associates and the redevelopment of the former US Naval headquarters in Grosvenor Square.
Carl heads our construction team.
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His Honour Anthony Thornton QCSenior Consultant
His Honour Anthony Thornton QC
His Honour Thornton QC was called to the Bar in 1970, took Silk in 1988 and elected a Bencher in 1992.
He was appointed an Assistant Recorder in 1988, a member of the General Council of the Bar from 1988 to 1994, a Recorder in 1992, a Senior Circuit Judge in 1994, Judge of the Technology and Construction Court of the High Court in 1998 and part-time member of the Parole Board from 2002 to 2010.
He was appointed Deputy Judge of the Administrative Court and Queen’s Bench Division in 2009 and Judge of the Crown Court and of the First-tier (Mental Health) Tribunal in 2010.
He retired as a Senior Circuit Judge on 13 January 2015.
Anthony is experienced in advising clients on major sourcing and strategic commercial projects and providing innovative solutions to complex initiatives.
Anthony also has significant experience working with clients on commercial disputes, encompassing litigation, arbitration, mediation, investigations and advisory work. He is widely experienced in the resolution of disputes in the construction, energy and infrastructure sectors, both internationally and in the United Kingdom, having successfully led the resolution of numerous substantial disputes.
He advises Costigan King on commercial disputes, both domestically and internationally.
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Lynn McCawSenior Consultant
Lynn McCaw
Lynn has practised corporate and commercial law in London for over two decades as a partner with major UK and US law firms and as an in-house lawyer in the industry.
Over the course of her career she has turned her hand to the full range of corporate and commercial legal practice: M&A, capital markets, private equity, infrastructure projects, privatisations, commercial contracts and secured lending.
Lynn has worked on matters involving many business sectors such as energy, mining, infrastructure, media, IT, e-commerce, publishing, leasing, construction, insurance, health care, packaging, retail, agriculture, travel.
Lynn has acted on corporate and commercial transactions for major UK and international clients such as China National Petroleum Corporation, China-Africa Development Corporation, ENI, Rosneft, Sony, General Electric, Bertelsmann, Random House, John Wiley, Gazprom, The Highways Agency, Opodo, the Getty family, Reliance Industries, Cinven, Apax, 3i, RBS, Mittal Investments, to name a few.
She has worked on projects in India, China, Canada, Russia, Central Asia, the Middle East, the USA, South America, and Africa as well as in Europe.
Lynn has been in leadership roles since early in her career, managing teams of lawyers and participating in law firm management.
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Suryen NullatambyConsultant
Suryen Nullatamby
LLB (Hons) BVC PGDip MSc FCIArb
Suryen is a dual-qualified Barrister and Solicitor-Advocate, specialising in construction law and dispute resolution resolved through litigation, arbitration, adjudication, mediation and expert determination. He has experience advising in both common-law and civil-law jurisdictions for domestic and international projects.
Suryen has extensive experience in advising on both contentious and non-contentious matters and has acted for various main contractors, sub-contractors, employers, construction professionals, public bodies and developers.
Suryen was called to the English Bar in 2004, and the Mauritian Bar in 2005, admitted as a Solicitor of the Senior Courts in 2013, and became a Fellow Member of the Chartered Institute of Arbitrators (FCIArb).
Suryen has lectured construction professionals on aspects of construction contracts, dispute avoidance and dispute resolution, and regularly contributed to the Adjudication Society Newsletter and the Building Magazine’s “Case in Focus” on various aspects of adjudication and construction law.
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Daniel PowellLegal Assistant
Daniel Powell
For the past few years, Daniel has worked in insurance and property litigation. Prior to this, Daniel worked in legal costs. Daniel also has experience volunteering in the civil courts and worked in a number of legal areas at the Citizens Advice Bureau (CAB).
At Costigan King, Daniel assists with commercial litigation and dispute resolution in a broad range of practice areas. He also assists with non-contentious matters.
Daniel commenced studying for the CILEX (Chartered Institute of Legal Executives) in 2018.
Daniel graduated from Leicester University in 2014 with a BA honours in History. Daniel then obtained the Graduate Diploma in Law (GDL) in 2015 at the Bristol University of Law.
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Yiming LiuLegal Assistant
Yiming Liu
Yiming has worked in commercial litigation and immigration law in London since September 2017. Before commencing the LPC in January 2017, since 2014 she worked in shipping and commercial litigation at national and international law firms in Beijing and Shanghai. Yiming also spent a short time at China International Economic and Trade Arbitration Commission (CIETAC) in Beijing.
At Costigan King, Yiming assists with commercial litigation and dispute resolution in a broad range of practice areas. She also assists with non-contentious matters.
Yiming graduated from Swansea University in 2013 where she obtained the LLM in International Maritime Law and focused on shipping litigation and marine insurance. She obtained the LLB from Swansea University in 2012.
Yiming is a fluent Mandarin Chinese speaker.
Management Team
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Lucy IvimyFinance Director
Lucy Ivimy
Lucy is a qualified barrister (non-practising) and a qualified investment analyst with an MBA from the London Business School.
Whilst practising as a barrister, Lucy gained extensive experience in employment, criminal and general common law practice.
Lucy is a former city fund manager and her financial roles have included the following:
- as a Fund manager she had sole responsibility for US$500m of pension fund investments in the Indian Subcontinent
- whilst working on the Capital markets Asian desk, Lucy was responsible for
successfully developing Schroders’ role and profile in the emerging Indian international syndicated equity placement market; and - as an Equity Analyst, based in Singapore, she worked in the aviation, shipping, telecoms and plantation and defence sectors.
Lucy is also currently a local councillor in Hammersmith and Fulham. Her Council roles have included:
- Deputy Leader of the Opposition;
- Chair of the Housing, Health and Adult Social Care Select Committee and Chair of the North West London Joint Health Overview and Scrutiny Committee: looking at the reorganisation of London’s accident and emergency hospital services;
- Cabinet Member for Housing: dealing with the implementation of £200m decent homes programme through 13,000 local authority owned homes; bringing the independent ALMO running H&F Homes back into direct control of the Council;
- Chair of the Planning Committee, which involved agreeing the agenda for committee meetings, dealing with contentious issues and chairing the sometimes heated public meetings; and
- Vice Chair of the Licensing Committee which involved sitting on or chairing numerous licensing tribunals.
In addition to the above, Lucy has experience in industry analysis and consultancy, including analysis of new media and communications, specifically the then newly emerging satellite/cable TV industries and the mobile communications industry, analysis of the Greek Cypriot tourism industry and preparing evidence for the Stansted public inquiry.
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Georgia MillerPractice Director
Georgia Miller
Georgia is responsible for all aspects of business management at Costigan King; including strategic management, business development, financial management, human resources, legal compliance and brand management.
Having worked for major international organizations, Georgia has extensive experience in all aspects of stategic business management.
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Jodie HandleyOperations Assistant
Jodie Handley
Jodie supports management in the day-to-day operations of the firm. She has extensive experience in all administrative duties, resource management and IT.
Jodie also forms part of the marketing team, supporting in the planning and organisation of events, seminars and business opportunities.