Professional Notice

About HKA 

HKA is the world’s leading consultancy of choice for multi-disciplinary expert and specialist services.

This includes risk mitigation and dispute resolution within the capital projects and infrastructure sector where our expert witnesses span the full range of disciplines including:

  • Delay
  • Quantum and Damages
  • Engineering, Architecture and Technical 
  • Forensic Accounting and Commercial Damages
  • Government Contracting 

Our experts are widely experienced in forensic accounting matters, advising clients on the economic impact of commercial and investment treaty disputes and in complex insurance matters.

In addition, HKA supports companies that conduct business with the US Federal Government, providing them with consulting services on complex government contracting matters.

HKA experts 

HKA experts help to resolve disputes in expert determination, mediation, arbitration and litigation. Experienced as party or tribunal appointed experts, arbitrators and neutral accountants, we are able to advise and, if needed, give evidence under cross-examination, including concurrent evidence or ‘hottubbing’ – in every jurisdiction. 

Clients have access to proven leaders and problem-solvers who decode complexity through collaborative working and innovative thinking. 

A multi-disciplinary approach to disputes 

 Whether providing expert advisory, expert determination or expert witness services, HKA occupies the unique, multi-disciplinary service that combines quantum, engineering, architecture and technical, delay, disruption, forensic accounting, damages, and government contracts analysis. 


As well as more than 500 expert witnesses, HKA now has in excess of 500 advisors and consultants – across 40+ offices in 18 countries – with the skills and experience that are essential to get to the heart of even the most complex issues. 

Markets and industries 

HKA’s global portfolio includes prestigious projects on every continent and in market sectors that include buildings, industrial and manufacturing, power and utilities, resources, technology and transportation infrastructure. 

Our forensic accounting and commercial damages teams specialise in areas such as valuations, economic damages, investigations, bankruptcy, intellectual property, post acquisition disputes and insurance claims.

HKA experts’ experience in government contracting is profound and covers contract disputes, investigating allegations of false claims and defective pricing, compliance reviews and audit services as well as other tailored support. 

Professional standing and recognition 

HKA was awarded 'Construction Expert Witness Firm of the Year 2020' by Who’s Who Legal (WWL), winning the award twice in three years.  

We ranked as the top firm in WWL: Construction's expert witnesses analysis for the last six years, with our leading quantum, engineering and delay experts being recognised for their skills and reputation. 

HKA’s expert witnesses also feature in WWL’s ArbitrationAsset RecoveryCommercial LitigationConsulting ExpertsEnergy, Investigations – Forensic AccountingAustraliaCanada and France analysis, selected for their exceptional work providing written and oral testimony in contentious proceedings.