Hamish Clark

Hamish Clark is a Chartered Architect with more than 40 years of experience as a practising architect. He has acted as an expert architect on over 100 occasions both as an individual and as a member of a multidisciplinary team of experts.

Hamish is a sensible and pragmatic expert. He goes above and beyond to deliver for his clients. He possesses technical competence and great communication skills.

Lexology Index – Construction – Thought Leader

Hamish has given evidence and been cross-examined in the International Court of Arbitration in Singapore, the London Court of International Arbitration, and the Court of Session in Edinburgh. He has provided concurrent evidence (hot-tubbing) in an international arbitration and remote evidence in a virtual hearing. His expert appointments have included disputes with values in excess of $250 million, providing expert advisory services for defect and dispute investigations, and acting in a personal injury case.

Hamish has extensive experience as a project-running, senior architect, responsible for the delivery of commissions in both the UK and, during his early career, the construction of oilfield support facilities in the Middle East. He worked with the same established firm for 31 years, 28 years as a partner and 20 years as managing partner, where he combined his responsibilities as a partner with those of a project architect. Hamish has acted as lead consultant and contract administrator throughout his career and is well acquainted with a variety of procurement routes. He has broad ranging experience that includes the drafting of architectural and consultant appointments and the preparation of feasibility studies, scheme designs, production information, detailed and performance specifications, and condition surveys and reports.

Hamish provides expert opinion on architectural matters to clients in the Middle East, Europe, Asia and  Oceania. His expert appointments include matters associated with resource infrastructure projects, transport infrastructure projects, light industrial, commercial, hospitality projects, social housing projects including residential towers, luxury residential developments and heritage buildings. His expert reports cover matters such as building defects, compliance with building standards, design, standards of workmanship, professional negligence and contract administration. In addition to his own reports, Hamish has co-ordinated and reviewed expert reports prepared by specialist experts in acoustics, glass and swimming pools.

Hamish is a fellow of the Royal Incorporation of Architects in Scotland and accredited to their expert witness panel, a registered expert and member of the Royal Institute of British Architects, a member of the Australian Institute of Architects, and a member of the Architects Registration Board. He has completed a diploma in Construction Law, is a member of the Chartered Institute of Arbitrators and a practising member of the Academy of Experts. In addition to acting as an examiner for the final “Part 3” professional examinations for architects, he has lectured in Professional Practice for the Department of Architecture at the University of Strathclyde for a number of years. Whilst in practice, Hamish held an accreditation in building conservation from the Royal Incorporation of Architects in Scotland.

Hamish has good communication and project management skills. He is great to work with. Hamish attained technical excellence.

James McKay

James McKay is a professional engineer and registered architect with over 40 years of diverse experience in the engineering and construction industry. He regularly acts as expert witness regarding delay, quantum and technical disputes and has experience as both an arbitration panel member and a mediator.

James has acted as expert witness across a range of construction specialities on numerous occasions. He has been cross-examined more than 30 times at litigation and arbitration in a variety of US Federal and State courts, in US arbitrations and mediations and in international arbitration.

James has supported clients in over 100 construction disputes. These have ranged from issues of defective design, construction means and methods, cost overruns, lost productivity, and schedule delays and acceleration. He specialises in the analysis of complex construction disputes and the quantification of damages.

James has worked for owners, architects and engineers, construction managers, general contractors and speciality contractors across North America. His project experience includes power plants (fossil, nuclear and hydroelectric), industrial facilities (steel mills, refineries, auto assembly plants), defence systems, public buildings (schools and courthouses), and commercial facilities (office buildings, hospitals, hotels, and casinos).

James McKay is a highly-qualified, experienced and respected construction professional. He holds a master’s in architecture and is also qualified in building sciences. He is a registered architect in Pennsylvania, Illinois and Florida and a professional engineer in Pennsylvania, Maryland, New Jersey, Delaware and Florida.

Rocco R Vespe

Rocco R Vespe is a civil engineer with over 40 years of construction industry experience. He has been appointed as an expert more than 35 times in delay, quantum and technical matters.

Rocco has extensive hands-on construction experience. His thoroughness and ability to convey technical concepts to laypeople are impressive. He has a strong attention to detail.

Lexology Index – Construction

Rocco has testified on 20 occasions in litigation and arbitration, has delivered more than 20 sworn depositions and taken part in numerous mediations.  In addition to preparation of expert reports and trial testimony, he has drafted interrogatories, prepared questions for depositions and cross-examination, and developed trial exhibits for disputed projects with values in excess of $1 billion.

Rocco’s background includes 20 years as a general and concrete contractor followed by more than 20 years as a claims consultant. His construction experience encompasses transportation infrastructure, including roads, bridges, and parking structures; manufacturing, power, chemical and petrochemical plants; and buildings ranging from municipal, commercial, and residential to hospital, medical, hotel, gaming, stadiums, educational, shopping centres, casinos, and restaurants. He is a skilled negotiator and works with parties to both resolve and avoid disputes during construction and following project completion. He has also provided both public and private owners with representation and construction management services.

Rocco’s expertise includes project management, construction management, cost estimating, schedule and delay analysis, disruption and inefficiency, construction defects, claims evaluation, delay and damages, contractor and construction manager performance evaluations, competitive bid, negotiated, design-build, guaranteed maximum price (GMP) projects, troubled project intervention, and OSHA and safety evaluations. He also provides post-accident, personal injury evaluation of the roles and responsibilities of project parties in federal and state court.

Rocco R Vespe is a professional engineer registered in Connecticut, Florida, Maine, Maryland, New Jersey, Pennsylvania, and South Carolina. He is one of 61 fellows of the Construction Management Association of America (CMAA) and a member of the CMAA National Committee that issued the 2015 CMAA Standards of Practice. He has written articles, as well as developed and taught seminars nationally, on project management, construction management performance, claims avoidance, risk management, alternative contracting methods, change order management, construction defects, and delay analysis. He also co-authored a McGraw Hill textbook, Construction Estimates: From Take-off to Bid, as well as many articles on construction claims.

Rocco Vespe is a highly experienced specialist in construction-related litigation and arbitration, with extensive expertise in delivering expert testimony on delay and disruption analysis, quantum assessments, personal injury and technical claims.

Bill Haggart

Bill Haggart is a Chartered Engineer with 30 years of experience in the field of building services engineering (MEP). He has been appointed as a technical expert witness on several occasions.

Bill has an encyclopedic knowledge of mechanical, electrical and plumbing matters. He is a strong communicator, both orally and in writing.

Lexology Index – Construction

Bill has acted as technical expert, assistant to the named expert and as part of multi-disciplinary expert teams for disputes across Asia, Australia, Europe and the Middle East. He has given evidence in arbitrations, written technical expert reports and participated in expert meetings for projects with values in excess of US$500 million and for disputed sums in excess of US$50million.

Bill has extensive experience in the design, specification, monitoring and inspection of MEP systems for buildings and infrastructure projects in commercial, retail, defence, leisure, health, education, aviation and transport sectors. He has a thorough understanding of the interfaces and interdependences between the different MEP disciplines and systems involved in the design and construction of buildings and infrastructure projects.

Bill has held senior positions in large, multi-disciplinary, international design and consulting engineering practices working on local, national and international projects; including successfully managing long-term frameworks for local authorities. He has worked with a variety of forms of contract and procurement routes ranging from PPP and PFI to NEC3, design and build, and prime contracting.

Bill is a member of the Institution of Engineering and Technology, Chartered Institution of Building Services Engineers, Academy of Experts and an associate member of the Chartered Institute of Arbitrators.

Bill is strong under aggressive cross-examinations. Bill is a knowledgeable expert in MEP design issues. Bill has credibility and skill in explaining his expert arguments in an easy-to-understand manner.

Nabil Al Tawil

Nabil Al Tawil is a highly qualified and experienced construction professional with over 40 years of project management, claims and ADR experience. He is one of a small number of accredited Arabic-speaking dispute resolution professionals operating in the UAE and across the Middle East region; and is a registered expert witness with the appeal courts in Iraq.

Nabil Al Tawil is a standout construction manager with over 40 years’ experience in project management, claims, and dispute resolution. He is noted by peers and clients for his “very good understanding of how quantum, delay, and technical disputes are dealt with in the UAE”, solidifying his reputation as a valued asset in the field.

Lexology Index – Consulting – Construction – Quantum, Delay, and Technical

Nabil has been a senior representative to the Abu Dhabi Government Claims Committee for 4 years, significantly enriching his knowledge of the common causes and resolutions of disputed projects in the region. He has been actively involved for several years in arbitration and mediation and has repeatedly acted as sole arbitrator and chair of DRB and arbitration tribunals on cases in Iraq, Abu Dhabi, Dubai, and recently in Sharjah. In addition, Nabil has acted as an expert witness on many occasions and has been cross-examined in litigation and arbitration proceedings

Nabil’s experience covers all aspects of pre-contract and post-contract works, and he has acted as project manager on several major construction projects, such as Sheikh Zayed Grand Mosque in Abu Dhabi. He is well versed in budget management, cost monitoring, value engineering and scheduling for all phases of engineering, procurement, construction and commissioning (EPCC).

Nabil Al Tawil specialises in assessing damages, evaluating contractual entitlement and provides advice and opinion in the course of resolving and settling disputes, through litigation or ADR procedures. He has a wealth of project management and dispute resolution experience, gained through providing arbitration and expert services across a wide range of sectors including power, oil and gas, infrastructure, construction, medical, aviation and military facilities.

In addition to his engineering degree, Nabil holds a PhD from Reading University and an MSc from Loughborough University in construction management. He is a Chartered Construction Manager and a fellow of the Chartered Institute of Building and the Chartered Management Institute, a member of the Chartered Institute of Arbitrators and the Project Management Institute, a RICS accredited mediator, an accredited arbitrator by the Abu Dhabi, Dubai and Sharjah arbitration centres in UAE, and an active member of the Dispute Resolution Board Federation (DRBF) and the International Chamber of Commerce (ICC).

Nabil’s language skills give him a distinct advantage. He handles construction disputes very well.

David McIntyre

David McIntyre is an exceptionally well-qualified and experienced Chartered Engineer who has worked in the construction industry for over 35 years. He has an honours degree in mechanical engineering and master’s degrees in pressure vessel design, business administration and construction law. He is internationally recognised in the field of mechanical engineering, has acted as technical expert numerous times and has given evidence on many occasions. He leads HKA’s global engineering group comprising over 340 engineers and is responsible for teams of experts in different engineering disciplines. It is often the case that he works closely with delay, quantum and damages experts to provide a comprehensive service for clients involved in large complex construction disputes.

David possesses extensive experience. He is internationally recognised for his mechanical engineering expertise. He is a valuable asset in any project.

Lexology Index – Arbitration

David has a track record of assisting clients and their advisers to resolve disputes and negotiate settlements concerning complex power and process projects across the world. He has worked in Canada, South America, Europe, the Middle East, Asia and Australia on a variety of projects that have included boilers, gas and steam turbines, nuclear installations, process plants, and in the areas of safety and risk management and operation and maintenance of mechanical and electrical systems.

David is also highly experienced in the investigation of circumstances involving cranes and lifting equipment that have led to serious injuries and deaths. These include consideration of designs, operation and maintenance, regulatory requirements and good practice. He is familiar with the requirements of the Lifting Operations and Lifting Equipment Regulations (LOLER) and the Provision and Use of Work Equipment Regulations (PUWER).

David is often able to bring together his engineering, business and construction law expertise to advise clients on a range of matters. He has given evidence in court, at arbitrations and adjudications in the UK and around the world. He has been appointed by the International Chamber of Commerce (ICC) to provide technical assistance to arbitrators and has assisted legal teams and clients during mediations and settlement negotiations.

David is a published author, a fellow of the Institute of Mechanical Engineers, specialist fellow of the International Institute of Risk and Safety Management, member of the Nuclear Institute, member of the Chartered Institute of Arbitrators and member of the Academy of Experts.

David McIntyre is a standout practitioner in the market who “excels in complex and technical matters”, and has particular expertise in power, utilities and manufacturing projects.

Paul Mansell

Paul Mansell is a qualified engineer with over 35 years of engineering and construction industry experience. He has acted as technical expert, supervising expert and expert advisor.

With a wealth of experience in delivering top insurance expert reports and testimony, Paul Mansell skilfully advises clients across the oil and gas, power and infrastructure sectors on complex matters.

Paul is an accredited expert witness, delivering expert reports in project management, engineering management, quantum and technical matters. He has been appointed for disputes at litigation, arbitration, and adjudication and has given evidence at international arbitration, including concurrent evidence (hot-tubbing).

Paul provides services at both project and strategic levels including expert witness, expert advisory, project assurance and audit, contractual advisory services, strategic and project risk management, dispute resolution, insurance PI claims, development of claim submissions, settlement negotiation, commercial management, project management, delay and schedule management and training services.

Paul is an experienced commercial manager and project manager with extensive hands-on project experience. He has delivered projects and advised clients across Europe in a range of sectors including buildings, infrastructure, transportation, industrial, oil and gas, mining, chemicals, power, and utilities.

Paul Mansell is a fellow of the Chartered Institute of Arbitrators, a member of the Association of Project Managers, the Association for Advancement of Cost Engineering and an associate member of the Institution of Chemical Engineers, as well as a practising member of the Academy of Experts.

Tim Chitester

Tim Chitester is a registered professional engineer with over 45 years of experience in the engineering, design and construction industry. He is an authority in the resolution of construction disputes, construction claims, project management and property loss and business interruption claims. Tim has been appointed as a delay, quantum or technical expert on more than 100 occasions.

Timothy is a very smart practitioner. He is a first-rate scheduling and delay expert. He has tremendous experience as an expert witness in complex construction litigation.

Lexology Index – Construction

Tim is a recognized construction expert and has testified in federal court, federal mediation, state court, AAA arbitration, ICC arbitration and in other international arbitration forums. He provides expert reports and testimony, for disputes ranging from millions to those in excess of $1 billion, across Asia, Europe, the Middle East and North and South America. He has acted as expert in matters of construction management, contractor and engineer standard of care, trade use of contracts, cost, schedule, and productivity with resultant delay and disruption.

Tim has provided property loss and surety support services, including the review and evaluation of more than 150 contractors, for standard of care and project implementation programs. He also provides consultancy for clients regarding energy services, from energy conservation and demand side management to central utility plants and distributed generation.

Tim is widely experienced as an engineering manager and project manager. He has a background as an engineering, procurement and construction (EPC) contractor working on a variety of healthcare projects across North America. He also has hands-on EPC and consulting experience in projects ranging from industrial, process and utilities to power generation, oil and gas and buildings.

Tim is a licensed professional engineer in the states of Florida, Iowa and Pennsylvania, and holds a Bachelor of Science degree in mechanical engineering from the University of Pittsburgh. He is a member of the ABA Forum on Construction Law, the ABA TIPS property law section, the Loss Executives Association and the American Society of Mechanical Engineers; and has been published on matters of construction disputes on numerous occasions.

Timothy Chitester is a leading quantum, delay, and technical expert with over 45 years of global experience providing high-quality, expert analysis on the cost and schedule impacts of delay and disruption across multi-billion-dollar construction disputes.

Peter Caillard

Peter Caillard is a Chartered Civil Engineer with nearly 40 years of experience in the construction industry.  He is widely experienced in the design and construction of highways, transport and infrastructure projects.

Peter is one of the finest civil engineering experts in the design and construction of motorways, bridges and tunnels. His practical construction experience aids him in producing outstanding expert reports. His analytical ability is incomparable.

Lexology Index – Construction

Peter has managed projects through all stages of construction from preliminary design through to final account using a variety of forms of contract.   He has been engaged with projects throughout the world including the UK and Europe, the Middle East, Africa, and North America, and his experience covers all aspects of design and construction including highway geometry, road pavement construction, drainage, earthworks, highway structures, public utilities, and materials testing.  He is also experienced in transport planning, both for public infrastructure projects and private developments.

Peter has also undertaken research projects on behalf of the Department of Transport, and has developed draft technical standards both in the UK and overseas.  He has also executed safety audits for a wide range of projects and led investigations into road traffic accidents in the UK, followed by preparation of reports for litigation.

He has undertaken forensic investigations relating to engineering disputes on many occasions and testified at dispute hearings and planning inquiries, including planning appeals, arbitrations, and mediations.   He gave evidence to the House of Commons Select Committee during the passage of the enabling legislation for the Channel Tunnel Rail Link.

Peter Caillard is an internationally renowned technical expert, hailed for his “intelligence and clarity of thought,” handling complex disputes in the fields of infrastructure and transport.

Gerry Brannigan

Gerry Brannigan is a Chartered Engineer with over 20 years of experience.  Since 2012, he has been appointed as a technical expert witness or expert advisor on more than 50 occasions.

Gerry is pleasant to work with and extremely helpful. He is able to synthesise extremely complex information and turn it into an independent expert analysis. He is an impressive construction expert.

Lexology Index – Construction – Thought Leader

Gerry is an expert witness in building services engineering (MEP), multi-disciplinary design management and has acted as the lead expert in multi-disciplinary complex construction disputes. He has given oral evidence at arbitrations, adjudications, and dispute adjudication boards. In addition, he has assisted at mediations and provided a deposition in the USA. Gerry is part of the leadership of HKA’s group of engineering, architecture, scientific, and technical specialists providing expert witness and expert advisory services. He is responsible for the development of new areas of expertise for HKA, and currently oversees the new Aviation & Space team, and the Environmental and Climate Change team.

With a background in design engineering and design management, Gerry has experience in almost all types of buildings including residential, universities, healthcare, high-rise, multi-use developments, data centres, industrial facilities, commercial office developments, museums, galleries and airports. He has extensive skills, knowledge and expertise in building services engineering with a focus on heating, cooling, ventilation, air conditioning, controls, public health engineering, sustainability and project planning. Gerry has detailed knowledge of building physics, energy efficiency and sustainability, building regulations and the interaction of users on the performance of buildings. He also has significant experience in project and design management, problem solving, design quality, client briefing and scope development, site inspection, project financial management, project programming and the coordination between disciplines on complex construction projects.

Gerry’s appointments have concerned disputes in different jurisdictions including Scotland, England, Ireland, Norway, UAE, Qatar, Australia and USA Federal Court. As well as undertaking individual building services and MEP expert witness appointments, Gerry has experience of managing and coordinating multi-disciplinary expert teams on complex construction disputes. He has opined on liability, design responsibility, client scope, performance issues, risk, professional responsibility, design duties, contractor duties, systems failures and contributed to the assessment of delay factors.

Gerry is a fellow of the Chartered Institution of Building Services Engineers and a member of the American Society of Heating, Refrigerating & Air Conditioning Engineers, the Society of Public Health Engineers, the Society of Construction Law and the International Bar Association. He is a practising member of the Academy of Experts and an associate member of the Chartered Institute of Arbitrators.

Gerry can communicate complex ideas in simple terms. He is personable and good with clients. Mr Brannigan possesses a strong work ethic.

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