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Crispin Winser QC

Call 2003 • QC 2021

"absolutely first rate" ... "an excellent cross-examiner"
(Who's Who Legal 2020)

Professional Liability

Crispin has particular experience of claims against construction, financial services, insurance and legal professionals.

Selected Cases

  • Successfully defending adjudications brought against quantity surveyors (for allegedly negligent preparation of bills of quantities) and architects (for allegedly negligent performance of the role of designer and lead consultant).
  • Williams Tarr Construction v Roylance [2018] EWHC 2339 (TCC); [2018] CILL 4211 – successfully defending a civil engineer in a 5 day TCC trial concerning alleged negligence in the design of a retaining wall.
  • Barnaby v Raleys Solicitors [2014] EWCA Civ 686; [2014] All ER (D) 42 (Jun) – acting (both at first instance and in the Court of Appeal) in a successful claim against solicitors for under-settlement of the underlying claim.
  • Successfully defending consulting engineers facing a £7m claim for alleged negligence in the design of the mechanical and electrical fit-out of flagship retail units.
  • Acting for corporate Approved Inspectors alleged to have owed a duty of care to the owner of the property they inspected for building control purposes.
  • Acting for insurers in the Mercantile Court in relation to the disputed avoidance of a property policy for misrepresentation and breach of warranty and the alleged negligence of the brokers.
  • Acting for solicitors alleged to have been negligent in the implementation of a tax scheme.
  • Sweett (UK) (formerly Cyril Sweett) v Michael Wight Homes [2012] EW Misc 3 (CC) – representing quantity surveyors alleged to have been negligent in relation to the non-provision of a performance bond.
  • Acting for architects facing a £0.5m claim for allegedly negligent design of a residential care home.
  • Liberty Syndicate Management v Campagna [2011] EWHC 209 (TCC); 27 Const LJ 275 – acting for technical auditors facing a multi-million Euro claim from the underwriters of a latent defects insurance scheme for failing to detect defects during the construction of houses across Ireland.
  • Acting for homeowners in a claim against a surveyor in relation to a negligent building survey.
  • Claim against architects for negligent design leading to failure of acoustic tests under the Building Regulations.
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  • Registered practitioner in the Dubai International Financial Centre (DIFC)
  • Major Scholar, Inner Temple
  • MSc Construction Law & Dispute Resolution, King’s College London
  • Dip Law, City University
  • BA, Bristol University


  • British Japanese Law Association
  • Chartered Institute of Arbitrators (FCIArb)
  • Commercial Bar Association
  • LCIA European Users Council & Young International Arbitration Group
  • London Common Law and Commercial Bar Association
  • Society of Construction Law (UK & Gulf)
  • Technology & Construction Bar Association


  • Legal 500 2021 London Bar: leading junior for Construction, Energy and International Arbitration
  • Legal 500 2020 UAE: leading junior for Construction
  • Chambers UK 2021: leading junior for Construction and International Arbitration: Construction/Engineering
  • Chambers Global 2020: leading junior for Construction
  • Who’s Who Legal 2020: leading junior and future leader for Construction


“Reasonable, on top of the detail, commercial and an amazing advocate – particularly at cross-examination.”

Legal 500 EMEA, 2021

“One of the standout performers among senior juniors at the Construction Bar. He is thorough, well prepared, and an effective advocate.”; “He’s considered, calm under pressure and able to get up to speed quickly.”

Chambers & Partners, 2021

“Hard-working, team player who really understands how to present in international arbitration – should be a QC already.”

Legal 500, 2021

“Hard-working, great team player. Excellent cross-examination skills. Best junior barrister I have come across.”

Legal 500, 2021

“An excellent senior-junior – very clever and responsive.”

Legal 500, 2021

“absolutely first rate … an excellent cross-examiner in an arbitration context”

Who's Who Legal, 2020

“An excellent senior-junior – very clever and responsive.”

Legal 500 2020, EMEA

“highly responsive … creative and quick on his feet, with real substance on the intellectual side of a dispute” … “He is stunningly good. His work is detailed and his manner of cross-examination is incisive but pleasant.” … “He prepares thoroughly and is very perceptive and good on his feet”

Chambers & Partners, 2020

“Very proactive and impressive.” … “Extremely hardworking, very effective in cross-examination and always responsive.”

Legal 500, 2020

“Excellent and technically very able. He is very personable and not afraid to roll up his sleeves and work as part of the wider legal team” … “Very responsive and very hard-working” … “He has an impressive intellect and is always very quick to grasp the detail on technical matters. His cross-examination is very effective.”

Chambers UK and Global, 2019

“Provides that combination of skills that are key in a senior junior: clear strategy, concentration on what really matters, and strong delivery” … “One of the top junior barristers in the construction/arbitration field”

Legal 500, 2019

“A clever and practical construction specialist who is concise, clear and very helpful.” … “Very thorough and commercially astute. A tenacious advocate.”

Chambers UK and Global, 2018

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