Experts Details

Simon Nightingale Chartered Quantity Surveyor Offshore Energy

Simon Nightingale LLM MSc FRICS MCInstCES MCIArb

Mr Simon Nightingale is a Chartered Quantity Surveyor and RICS Accredited Expert Witness providing quantity surveying, dispute resolution, expert witness and advisory services to the offshore oil and energy sectors.

He has advised oil majors and engineering/ service companies in procurement, contracts & commercial management and dispute resolution roles. Also, he has provided expert advice to law firms and taken instruction to act as an Expert Witness in quantum matters related to offshore engineering and construction projects.

Fields of Expertise

Acted in roles and provided advice in relation to matters including:

  • Valuation/ Final Accounts  
  • Interpretation of Contract Documents
  • Quantum  
  • Bills of Quantity
  • Claims Advice  
  • Claims Preparation
  • Settlement Negotiations

Particular project experience includes engineering works from FEED to detailed design, offshore works including transportation, installation, construction, hook-up and commissioning, offshore decommissioning, onshore fabrication of jackets and topsides, vessel conversions, and FSO’s. Offshore location experience includes the North Sea (UK & Norway), Caspian Sea, Gulf of Arabia and South China Seas. 


His expertise is in quantity surveying practice, valuation of variations and final accounts, contractual interpretation and claims preparation in relation to major engineering and construction disputes. He has also provided advice in relation to delay claims and prolongation costs, defects correction and defence against counter claims.

He has also acted as a quantum expert in arbitration and litigation cases and provided witnesses statements for trial. This includes providing written reports and verbal evidence for litigation in Norway and the Technology and Construction Court in London, including having been cross examined by QC’s. 

Mr Nightingale has also successfully concluded the Advanced Professional Award in Expert Witness Evidence and is an accredited as an expert witness by the RICS under its expert witness referral scheme.

He possesses detailed knowledge of alternative dispute resolution practices as well as experience in litigation in the UK through to trial. An experienced negotiator and has successfully concluded large settlements up to the value of US$260M, avoiding the need for arbitration/ litigation. 

Contract specialties are LOGIC, NTK and associated bespoke contracts for offshore engineering and construction works.


Academic Qualifications

  • LLM Oil & Gas Law (awarded with distinction)
  • MSc Construction Financial Management
  • Advanced Professional Award in Expert Witness Evidence


Professional Accreditations & Memberships

  • FRICS Fellow of the Royal Institution of Charterd Surveyors (Chartered Quantity Surveyor designation)
  • MCIArb Member of the Chartered Institute of Arbitrators
  • MCInstCES Member of the Chartered Institution of Civil Engineering Surveyors
  • Member IDA - Danish Society of Engineers
  • Member of the Society of Construction Law (UK)
  • RICS Accredited Expert Witness

Experience Overview

Project Experience


Project Scopes Include

  • Offshore Hook-Up / Transportation / Installation
  • Offshore Decommissioning / Removal
  • Subsea Pipelines & Umbilicals
  • Onshore Fabrication of Topsides / Jackets / Modules
  • Civil Structures / Concrete / Steel
  • Vessels/ FSO’s
  • Gravity Base Structures (wind turbines)


  • HSM Offshore BV v Aker Offshore Partner Ltd [2017] EWHC 2979 (TCC); acted as Expert Advisor (Quantum) for the Defendant from final account stage, through Pre-Action Protocol and through to trial

International Experience


Projects in the Following Countries 

  • United Kingdom / North Sea UKCS
  • Norway / North Sea NCS
  • UAE
  • Malta
  • Kazakhstan / Caspian Sea
  • Brunei / South China Sea
  • China
  • Denmark
  • Singapore
  • Jamaica
  • Greenland
  • Poland