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Roger ter Haar QC

Call 1974 • QC 1992

"Brilliant at cross-examination." "He's very good in court and clearly understands what judges and arbitrators want to hear."
(Chambers UK 2017)

Roger ter Haar QC is an English QC who has practised as a barrister, adjudicator and arbitrator for 40 years at what is now Crown Office Chambers, Temple, London. He has a wide practice that is recognised by such directories as Chambers and Partners, which list him as a leading silk for International arbitration, construction and engineering, commercial dispute resolution, insurance, property damage, professional negligence, and energy and natural resources.

He has been nominated as Silk of the Year for construction in the United Kingdom twice and also for professional negligence. He was selected as International Arbitration Silk of the Year in 2012. His publications include Construction Insurance & UK Construction Contracts (co-editor), Emden’s Construction Law (contributor) and Remedies in Construction Law (author). He is editor-in-chief of the IBA’s publication Construction Law International.

He acts as counsel in arbitration and litigation (current cases include a US $1 billion dispute arising of a project in Qatar, US $750 million construction dispute concerning an airport in the Middle East and a US $250 million ICSID expropriation arbitration). He also acts as arbitrator and adjudicator, and sits as a deputy high court judge in the queen bench division, technology and construction court, and administrative court within the English High Court of Justice.

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  • Deputy High Court Judge (2003)
  • Recorder (2003)
  • Boundary Commissioner (2000)
  • Bencher of Inner Temple (1993)
  • BA Jurisprudence (1973)
  • Magdalen College, Oxford


  • Hong Kong International Arbitration Centre Panel of Arbitrators (2013)
  • The Korean Commercial Arbitration Board Panel of International Arbitrators (2013)
  • Chairman, Inner Temple Estates Committee (1995 – 1999)
  • Former Chairman Lloyds Disciplinary Committee


“Formidable in court, and his ability to absorb an argument that is made, digest it and articulate a response while on his feet is really impressive.”

Chambers UK 2018

“He is very experienced, very charming and a real leader in the field.”

Chambers UK 2018

“He makes complex matters look easy. He’s relaxed but devastating at cross-examination. It is a pleasure to listen to him and to work with him. His memory is virtually photographic, and he’s so lovely.”

Chambers UK 2018

“A very experienced, persuasive and effective advocate, who is popular with clients….an absolutely excellent strategist and one of the best on his feet.”

Legal 500 2017

“Well respected, with a badge of quality…outstanding experience…A popular choice for construction disputes and international arbitration.”

Legal 500 2017

“His ability to quickly grasp the relevant facts and get involved in the strategy of a case is excellent.”

Chambers UK

“He is incredibly clever in a broad way, not just about a particular topic but almost everything.”

Chambers UK

“Judges listen to anything he says’, ‘a well-established construction silk’.”

Chambers UK

“A fearsome operator, whose cross-examination of witnesses can be devastating.”

Chambers UK

“A very thorough and very disciplined counsel who is very good with the detail.” “Simply a class act, who instinctively cuts through the issues to get to the heart of a dispute.”

Chambers UK

“Strong advocate with an understated approach who delivers outstanding results in cross-examination.”

Chambers UK

“An old-fashioned advocate who can pick up any case and run with it well…One of the very best.”

Chambers UK

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