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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)

Construction & Engineering

Roger sits as an arbitrator and adjudicator in construction and engineering disputes. He sits as a Deputy High Court Judge in the Technology & Construction Court

Roger has extensive experience of acting as arbitrator, adjudicator and counsel in construction and engineering disputes both within the UK and internationally. Cases in which he has been involved as arbitrator, adjudicator or counsel include disputes relating to projects in Australia, Bahrain, Bangladesh, Eire, Bulgaria, Gibraltar, Hong Kong, India, Indonesia, Jersey, Kuwait, Oman, Pakistan, Qatar, Russia, Saudi Arabia, Taiwan, Tanzania and the United States of America.

As counsel, his clients have included Governments, Local Authorities, other Employers, Contractors, Sub-Contractors and professionals. He has acted as Counsel for Claimants and Defendants in numerous professional negligence cases arising out of allegations of negligence cases against architects, engineers and quantity surveyors.

Selected Cases

  • Geoffrey Osbourne Ltd v Atkins Rail Ltd [2010] – BLR 363 (Silver Shemmings).
  • London Underground Ltd v Citylink Telecommunications Ltd [2007] EWHC (TCC) 1749 (Lovells).
  • Henry Boot Construction Ltd v Alstom Combined Cycles Ltd [2005] 1 WLR 3850 (Lovells).
  • Alstom Signalling Ltd v Jarvis Facilities Ltd [2004] EWHC 1285 (TCC); (2004) 95 Con LR 55 (Lovells).
  • AWG Construction Services Ltd v Rockingham Motor Speedway Ltd [2004] EWHC 888 (TCC) (Lovells).
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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


“His instincts in understanding how to present disputed issues to a tribunal are brilliant. “

Legal 500 EMEA 2020

“Very detailed and exceptionally well prepared.” “A masterful advocate.” “He provides clear, thoughtful and well-considered advice.”

Chambers & Partners 2020

“Has a wealth of experience, and is an impressive advocate who can quickly get the measure of a witness or tribunal.”

Legal 500 2020

“An impressive advocate who can quickly get the measure of a witness or tribunal and tailor his cross-examination accordingly.”

Legal 500 2020

“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

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