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    Bill Marshall, who founded the Practice, remains closely involved with its work. The partners can also call on the experience of Kishan de Silva, Matthew Davis, Robin Blois-Brooke, Richard Barter and Alex Fleming, all former partners, and Nick Buenfeld, an authority on concrete durability based at Imperial College, London. Brief details of the qualifications and experience of the consultants can be seen by clicking on the relevant links below.

    Leading authorities and specialists are frequently retained to provide deeper insights into specific problems. The firm has close contacts with researchers in key areas at Universities and other specialist organisations.

    • Kishan de Silva

      Kishan de Silva



      University of Cambridge, MA (Hons), 1974
      Imperial College London, MSc DIC, 1976
      Chartered Engineer, 1978

      Member, Institution of Civil Engineers
      Member, Chartered Institution of Water and Environmental Management

      Kishan de Silva has broad experience in building and civil engineering works in the United Kingdom and overseas. He has advised on several major claims, including the recent dispute relating to the Wembley Stadium. He specialises in professional duties, heavy civil engineering works, hydraulic structures, offshore platforms, below ground construction generally, structural steelwork, waterproofing systems, concrete durability and epoxy resin applications in construction.

    • Matthew Davis

      Matthew Davis



      University of Manchester, BSc (Hons) Civil Engineering, 1981
      Kings College, London, MSc Construction Law and Arbitration, 1998
      Chartered Engineer, 1985

      Fellow, Institution of Civil Engineers
      Member, Institution of Structural Engineers
      Fellow, Geological Society

      Matthew’s experience encompasses large civil engineering projects such as bridges, retaining structures and structures associated with water treatment and sewage works as well as smaller scale commercial and residential developments. He has a keen interest in the forensic investigation of building failures and defects and has advised on a wide range of matters covering design, materials and workmanship problems.

      Matthew has prepared Expert opinions for use in legal or arbitration proceedings and reports or presentations for use in adjudications and mediations. In addition to a continuing interest in heavy civil engineering works, Matthew has also developed an expertise in building technology and particularly matters relating to serviceability, weathertightness and tolerances.

    • Alex Fleming



      University of Cambridge, Diploma in Architecture, 1978
      University of Cambridge, MA (Hons), 1979
      Chartered Architect, 1980

      President, RIBA Central London Branch, 2006-2007
      Member, Chartered Institute of Arbitrators
      Member, Architects Law Forum

      Alex Fleming has some 40 years experience of designing and detailing many different building types and specifying their construction, including responsibilities for directing large and small teams of architects and technicians. He has overseen the establishment of studios abroad and in the United Kingdom, negotiated permissions and approvals, and administered contracts ranging from domestic alterations to major town centre redevelopments. Alongside his keen interest in design and construction, he has been instructed as an independent Expert to assist with complex disputes resolved in mediations, arbitrations, and English, Scottish, European and Middle Eastern Courts.

    • Owain Evans

      Owain Evans



      University of Cambridge, MEng (Hons) Civil, Structural and Environmental Engineering, 2005
      Kings College London, MSc (Distinction), 2016
      Chartered Engineer, 2010

      Fellow, Institution of Structural Engineers
      Member, Institution of Civil Engineers
      Fellow, Chartered Institute of Arbitrators
      Module Leader and Honorary Lecturer, The Bartlett, University College London, 2018 to present
      Membership Committee, Institution of Structural Engineers, 2018 to present

      Owain is a Chartered Structural and Civil Engineer with over fifteen years of experience in the construction industry.  During this period he has worked for both contractors and consultants on a wide range of projects, from residential refurbishments to the construction of a £100m steelwork plant.  Owain has particular knowledge in the design of basements, swimming pools, large residential and commercial developments, industrial storage units, and wind farms.  Owain has an interest in historic buildings and has been involved in the design of structural alterations to Grade I listed buildings and scheduled ancient monuments, as well as works on a UNESCO World Heritage site. 

      Owain has used the knowledge gained from working in both the contracting and consulting sides of the industry to advise solicitors, insurers, owners and contractors on a variety of disputes.  Owain has acted as the Expert and prepared CPR-compliant reports for submission in court, arbitration and adjudication proceedings.

      Owain is a Member of the Institution of Civil Engineers, and a Fellow of the Institution of Structural Engineers and the Chartered Institute of Arbitrators.  Owain is a Module Leader and Honorary Lecturer at the Bartlett School of University College London, and a committee member and Chartership assessor for the Institution of Structural Engineers.

    • Nick Buenfeld



      MSc, Imperial College, 1981
      DIC, Imperial College, 1981
      PhD, University of London, 1984
      CEng, Engineering Council UK, 1984

      Honorary Fellow, ICT, 2015
      Fellow, Royal Academy of Engineering, 2011
      Fellow, Institution of Civil Engineers
      Fellow, Institution of Structural Engineers

      Nick Buenfeld is Professor of Concrete Structures at Imperial College London (since 2000) and was Head of the Department of Civil and Environmental Engineering from 2011 to 2021.

      His expertise concerns the durability and long-term performance of concrete and concrete structures and his research is aimed at better understanding deterioration processes, developing methods for assessing durability and monitoring deterioration, improving concrete specifications and repair methods, and predicting the service life of concrete structures.

      Nick has acted as an expert witness in disputes involving concrete and has provided guidance to governments and to the designers and constructors of a wide range of major infrastructure projects. He has a particular interest in service life prediction and has been a consultant on major tunnel, bridge, offshore platform, maritime and building projects in the United Kingdom, United States, Hong Kong, Norway, Dubai, Saudi Arabia, Lebanon, Sri Lanka and Libya.

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