Latest News:

Diales open a new office in Madrid Diales announces collaboration with EVRA Consulting (PTY) Ltd (EVRA) Diales welcomes David Merritt to it’s team of experts Diales feature on Leaders League Diales open a new office in New York Diales Technical shortlisted in the British Construction Industry Awards 2020 Head of Diales, Mark Wheeler, is published in Lawyer Monthly. Chris Sunderland joins Diales as our Marketing and Business Development Director Diales Technical feature in photo contest Diales reception, 5th March 2020 COVID-19 UPDATE Diales Sponsor 8th ICC MENA Conference on International Arbitration Construction Claims Dubai – Record Keeping Evaluating Contract Claims, 3rd Edition – Out Now Diales are excited to sponsor the 17th ICC Miami Conference on International Arbitration Diales Sponsor the 7th Biennial Conference on Construction Projects from Conception to Completion How To Avoid Construction Disputes – Maria Fisentzou Diales nominated in Structural Awards 2019 Diales are delighted to announce that Phil Duggan been appointed as Head of Diales for the Middle East Diales are proud sponsors of Asia ADR Week 2019 Diales are pleased to be sponsoring the 5th ICC Asia Conference in Singapore Diales are pleased to be sponsoring the 4th ICC Africa Conference in Lagos this week Diales is proud to be sponsoring the 3rd PAW and to host a conference Diales is delighted to be taking part in the 3rd Kuwait Project Management Conference 2019. Diales is proud to be sponsoring the 7th ICC MENA Conference on International Arbitration Dealing with conflicting pressures – A practical guide Diales Technical are shortlisted for an award. Diales are proud sponsors of the CIArb’s International Arbitration Conference 2018 Flying high! Another Goodwood sculpture success Diales Host Drinks Reception GAR Live Construction Disputes ICC Institute Advanced Training on “Drafting enforceable awards” Should arbitration in investment protections treaties be forsaken? DRBF Conference – Paris, France Diales work with Gerry Judah on a new sculpture – Jacob’s Ladder Diales experts gain professional recognition Diales have two new experts Diales host successful drinks reception Diales are commended at the 2017 Structural Awards Mark Castell is attending the 2017 Dutch Arbitration Day, Amsterdam Independence Day: Why Do Many Experts Fail at Being ‘Independent’? John Mullen is published in the Construction Law Review Diales technical are shortlisted for two awards Diales celebrates five years of dedicated Expert Witness support services ICC 1st European International Arbitration Conference Diales are the lead sponsor of Kuala Lumpur International Arbitration Week

Expert Profile

David Palentine

David Palentine

Quantum Expert


BSc (Hons) in Quantity Surveying – First Class
Post Graduate Diploma in Management Studies
Post Graduate Diploma in Arbitration (Dip Arb)

Memberships & Associations


Contract Experience


Presentations & Training

Delivered in-house training courses to various companies on project management, procurement, contractual and commercial management.



Regional Experience

Middle East
United Kingdom

Cross-Examination Experience



  • Chartered Quantity Surveyor
  • Over 30 years of contracting and consulting experience
  • Specialist in valuation of final account, variations, and loss and expense
  • Over 25 expert appointments
  • Acted as quantum expert on civil cases referred to adjudication, litigation and arbitration and one criminal case.
  • Provided oral testimony as a witness of fact in the Technology Construction Court (TCC)-London


David has 30 years’ experience gained from working on multi million pound building, civil engineering, transportation, utility and mechanical and electrical projects in the UK, Republic of Ireland, and Middle East for employers, main contractors and sub-contractors.

David trained as a quantity surveyor with a national firm of contractors. Over a 10 year period David gained experience of various forms of procurement, different main contracts and sub-contracts, and carried out a full range of quantity surveying and commercial management duties on a wide range of projects. David also closed out projects that had financial problems; undertook damage limitation exercises; prepared contractual claims and provided assistance during arbitration and conciliation proceedings.

David has spent the last 20 years providing specialist commercial and contractual consultancy services to the construction industry. This includes providing commercial and contractual advice, undertaking performance audits, preparing and defending extension of time, and loss and/or expense claims, representing parties in adjudication and mediation as well as acting as adjudicator and mediator, assisting and acting as quantum expert.

David entered the expert service field by assisting various quantum experts; he received report writing training from the Academy of Experts and Bond Solon and cross examination training from Bond Solon.

David acted as a party appointed quantum expert on disputes that have been referred to adjudication, litigation and arbitration as well as a single joint expert on cases referred to litigation. He has received instructions on circa 25 cases, the first being in 2001.

As a quantum expert, David has attended expert meetings, prepared joint statements and expert reports, and provided opinion on various matters including reasonableness of interim valuations, valuation of variations and defects, prolongation and disruption costs and professional fees. David has also provided oral testimony in the TCC (London) as a witness of fact on a case where he was the quantum expert.

This expert has the following cross-examination experience:

  • The Technology and Construction Court
  • Adjudication/Mediation
  • Successfully completed external cross examination courses

David has been instructed by various law firms including:

  • Aaron and Partners
  • Berryman Lace Mawer
  • Betesh Fox
  • DAC Beachcroft
  • DWF
  • Eversheds
  • Halliwells
  • Mace and Jones
  • Pinsent Masons
  • RPC