Andrew Arentsen

He is a great tactician and is very practical. He will really roll up his sleeves to look at the legal issues.

Chambers UK

Andrew Arentsen

  • Called in 1995

Clinical Negligence

An experienced Clinical Negligence practitioner conducting work both for Claimants and for Defendant trusts across the full range of claims including injuries caused at birth, negligent surgical procedures and cases of mis-diagnosis and failure to diagnose.

Recent Cases

  • John Nicholl v Cardiff & Vale University Health Board: February 2015. Counsel for the Defendant health board throughout in a claim brought by the Claimant with an allegation of injury following negligent surgery. The claim was pleaded in excess of £1 million. The claim compromised at a joint settlement meeting shortly before the trial date.
  • Beryl Luke v Cwm Taf University Health Board: Cardiff CC September 2014. Counsel for the Defendant health board defending a claim for serious injury alleged to have been caused during bowel surgery.
  • Various v Depuy International Limited. Ongoing. Counsel for a number of Claimants in claims for injury arising from the provision of metal on metal hip prostheses.
  • Jones v Hywel Dda Health Board QBD Cardiff District Registry: Counsel for a Defendant Health Board in a dependency claim brought against it by the widow and daughters of a patient who had committed suicide whilst detained in a Psychiatric Unit.
  • The Claim settled after service of a Defence and counter-schedule at a joint settlement meeting in May 2014.
  • Susan Selby v Public Health Wales NHS Trust: QBD Cardiff District Registry. February 2014. Counsel for the Defendant trust defending a claim for alleged negligence during breast cancer screening.
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Notable Cases


Ian Scott & Others v BT (Ongoing)
Counsel for BT Engineers suffering hearing loss after exposure to tonal noise when testing telephone connections. The primary issue is the application of the Coles Lutman Guidelines on medical causation to cases of exposure to tonal rather than broadband noise.

Various v Depuy International Limited (Ongoing)
Counsel for a number of Claimants in claims for injury arising from the provision of metal on metal hip prostheses.

Donovan v Dwr Cymru (2015)
Counsel for the Defendant in a claim brought by the Claimant for personal injury with a schedule of loss pleaded at circa £1mllion. The claim compromised after service of detailed schedules and counter-schedules at a joint settlement meeting shortly before the trial date.

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The estate of Claire Wilcox (Deceased) v David Jenkins (2015)
Counsel for the Claimant in litigation arising from the death of a young mother and the resolution of the dependency claim for her infant child.

John Nicholl v Cardiff & Vale University Health Board (2015)
Counsel for the Defendant health board throughout in a claim brought by the Claimant with an allegation of injury following negligent surgery. The claim was pleaded in excess of £1 million. The claim compromised at a joint settlement meeting shortly before the trial date.

Simon Bullock v Gareth Bull (2014)
Counsel for the Claimant throughout his claim for serious injury to his dominant right shoulder. The claim had a pleaded value close to £1 million. It compromised at the joint settlement meeting.

Beryl Luke v Cwm Taf University Health Board (2014)
Counsel for the Defendant health board defending a claim for serious injury alleged to have been caused during bowel surgery.

Green & Milsom v Kravag Logistics (2014)
Counsel for 2 motorcyclists each of whom suffered serious injury in a single road traffic accident. The claim settled at a JSM for an aggregate sum £1.3 million.

Godwin v Peacock (2014)
Counsel for the Claimants in a dependency claim involving the death of a 20 year old husband and father in a road traffic accident.

Oliver Turton v WRU & Llanharan RFC (2014)
Counsel for the WRU in the successful defence of a claim brought against them by an injured player as a result of the condition of the premises of the member club. It was approached by the Defendant as an important test case.

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If you would like to instruct Andrew Arentsen or would like help or advice in doing so, please call and talk to our excellent clerking team, led by senior clerk Alan Kilbey MBE. Our phone number is +44 (0)20 7583 9241. Alternatively, please email us at chambers@farrarsbuilding.co.uk

For more information about our clerking team, please click here for the clerks page.

Appointments & Memberships


  • Chairman of the Welsh Rugby Union Independent Tribunal (2008 – present).
  • Tier 1 Panel Counsel to the Welsh Government for personal injury.
  • Panel Counsel to the British Boxing Board of Control Limited.
  • Panel Counsel to the Australian Rugby Football Union and the Georgia Rugby Football Union for their 2010 and 2012 tours.
  • Company, Commercial and Clinical Negligence tutor on the Cardiff University Bar Vocational course (1999 – 2007).

Education & Qualifications


  • Inns of Court School of Law (1994 – 1995)
  • MA Law 2:1, Corpus Christi College, Cambridge University (1991 – 1994)
  • Cardiff High School (1983 – 1990)

Directory Quotes


Continues to act in Wales-focused cases from London. He represents claimants and defendants in a range of catastrophic injury cases, and is noted for his dedication and client-oriented approach.

Strengths: “He clearly has a great intellect, is very good with clients, is very approachable, and is very good at explaining things in lay language.” “He’s a very hard-working junior, who puts a lot of time into his practice.”
Chambers UK 2017

Has a wealth of experience in noise-induced hearing loss and medical causation. Interviewees have also commented on his expertise in highways trips and slips.

Strengths: “He is very down to earth and has a great manner with clients.”
Chambers UK 2016

‘Refreshingly straight-talking and a formidable presence in the courtroom.’
The Legal 500 2016

“He is a great tactician and is very practical. He will really roll up his sleeves to look at the legal issues.”
Chambers UK 2015

“A specialist in claims where there is complex and often conflicting evidence.”
The Legal 500 2015

The entry notes the ability of Andrew Arentsen to handle numerous high-value damages claims.
Chambers UK 2014

Andrew Arentsen is “a sensible, pragmatic, and highly efficient” barrister whose personal injury practice is predominantly focused on catastrophic brain and spinal injury cases. He recently appeared in Andrew Jones v Ribbons Ltd, a catastrophic injury claim concerning an individual rendered disfigured when he caught his arm in an unguarded machine.
Legal 500 2014

The “fluent, persuasive and personable” Andrew Arentsen heads the group at Civitas Law, which has a national reputation for industrial disease claim.
Chambers UK 2013

The “brilliant” Andrew Arentsen’s honesty is recognised and appreciated by clients, who also value his “effective arguments and performances in court”. He is recommended.
The Legal 500 2013

Solicitors appreciate the “reliable and decisive” Andrew Arentsen who has recently been acting in a case which involved a nuisance and negligence claim against Welsh Water. He is also well known for representing clients in a number of RTAs.
Chambers UK 2012

Andrew Arentsen is “not afraid to make difficult decisions”.
Chambers UK 2011

Sources commend “the sound and practical” Andrew Arentsen for being “extremely approachable but also straight with you – he will tell you if you are going down the wrong route”.
The Legal 500 2011

Chambers & Partners 2017 Leading Barrister Legal 500 2016 Leading Individual

Personal Interests


Andrew is a keen skier and father of 3 young children.

Cycled in 2012 from Yosemite to San Francisco as part of the Velindre Cancer Charity Cycle that raised over £500,000 for cancer services at the Velindre Centre in Cardiff. Then persuaded to complete the second Velindre Cancer Charity Cycle from Boston to New York in September 2014 which raised close to £750,000.

Completed the 2009 Etape du Tour, a 120 mile stage of the Tour de France including an ascent of Mont Ventoux.

First class professional rugby player for Richmond, Newport and Glamorgan Wanderers. Cambridge Rugby Union Blue 1993. U18 Welsh schoolboy rugby international.