Alan Treacy

Senior Partner · Joint Global Head of Technical

Alan, a Founding Partner, began his career in specialist contracting before moving into private MEP practice, where he designed and delivered a diverse portfolio of complex projects. This depth and range of hands-on and consultancy experience now form the foundation of his highly regarded Expert Witness and Advisory work.

Education

  • MSc in Building Services Engineering Brunel University of London, UK

Memberships & Associations

  • Chartered Mechanical Engineer, Engineering Council UK (CEng)
  • Member of the Institute of Mechanical Engineers (MIMechE)
  • Member of the Institute of Refrigeration (MInstR)

Geographic Experience

  • Australasia
  • East Asia
  • Europe
  • Middle East
  • North America
  • UK

Sector Experience

  • Airport
  • Commercial Office
  • Energy Centres
  • Food Processing & Production
  • Hospitality
  • Mission Ciritcal / Data Centres
  • Pharmaceutical Facilities
  • Science & Research
  • Shopping Centres
  • industrial Processing

Over the past 22 years, Alan has prepared independent reports, provided expert opinion, and been cross-examined at tribunals, as well as giving evidence at adjudication hearings. He has been appointed as an expert across a variety of sectors, notably Science & Research, PFI Hospitals, Commercial Offices, Hotels/Hospitality and Food Processing.

Alongside his expert appointments, he provides advisory services on mechanical and electrical systems across these sectors and a broad international footprint.

His clients include sovereign wealth funds, real estate companies, property managers, developers, investors, and government bodies, delivering services including:

  • Design Feasibility studies
  • Technical Due Diligence for sale or acquisition
  • ESG and Asset Improvement Plans
  • Peer Review of MEP designs through all RIBA Design Stages
  • Contractor compliance with Employer’s Requirements
  • Testing and Commissioning of specialist MEP equipment
  • Defect Resolution

  • Over 35 years of international experience in construction MEP engineering, grounded in a strong specialist contracting background
  • Senior Partner and Joint Head of Technical, widely recognised as a leading MEP expert with particular expertise in refrigerant‑based heating and cooling systems and associated hydraulic networks
  • Testifying Expert with experience in giving oral evidence in domestic tribunals, adjudications and mediation proceedings
  • Appointed MEP Expert on major domestic and international projects including Science & Research facilities, Data Centres, Commercial Offices, Pharmaceutical facilities, Hotels, Airports, Industrial Processing Plants, and Food Production & Storage facilities
  • Advisor in high‑value negotiations, contributing to multiple amicable settlements across the UK, Europe, Asia and North America
  • Trusted by leading law firms, Sovereign Wealth Funds, Real Estate Companies, Property Managers, Developers, Investors and Government to provide independent expert opinion on complex MEP engineering systems
  • Recognised for clear, coherent and robust analysis, consistently praised by law firms and clients alike