Hylton acts for claimants and defendants in high-value and complex personal injury litigation, with particular experience of catastrophic injury, amputation, brain injury and serious orthopaedic claims. His practice includes substantial road traffic, employers’ liability, and public liability claims.

He is frequently instructed in cases involving difficult questions of liability and causation, significant future losses and multiple expert disciplines. He is particularly interested in cases where early strategic decisions, rehabilitation and the careful coordination of expert evidence can materially affect the eventual outcome.

Hylton acts both unled and alongside leading counsel. He has extensive experience of joint settlement meetings, mediations and trials, and is regularly instructed to advise on the strategy and valuation of substantial claims.

Hylton has a substantial clinical negligence practice and has particular experience of catastrophic neurological injury, complex medical causation, delayed diagnosis, fatal claims, and psychiatric injury. He acts for both claimants and defendants and is regularly instructed in cases involving difficult or competing expert evidence across multiple medical disciplines.

His practice is particularly focused on cases in which careful analysis of the medical evidence and early identification of the decisive liability and causation issues are central to the outcome. He is frequently instructed to provide strategic direction as cases develop, work closely with expert teams and conduct conferences with experts from different disciplines.

Hylton has extensive experience of High Court litigation, trials, mediations and joint settlement meetings. He also has particular experience of claims involving suicide and psychiatric care, including difficult questions of medical causation and counterfactual outcome.

Hylton has substantial experience of inquests, particularly those arising from healthcare, mental health treatment and other potentially preventable deaths. He acts for bereaved families and other interested persons in cases involving complex medical evidence and difficult questions concerning the circumstances and cause of death.

His clinical negligence practice gives him particular experience in testing medical evidence and examining healthcare professionals and expert witnesses. He is frequently instructed where the circumstances of the death may also give rise to subsequent civil proceedings, enabling the evidence and wider litigation strategy to be considered from an early stage.

Hylton combines sensitive handling of bereaved families with focused and effective advocacy. His experience includes deaths arising from failures in psychiatric care, suicide, sepsis and other alleged failures in medical treatment.

Hylton has particular expertise in catastrophic and life-changing injury claims arising from both accidents and clinical negligence. His work includes brain injury, spinal injury, amputation and complex orthopaedic injury, often involving substantial claims for lifelong care, rehabilitation, accommodation, equipment and loss of earnings.

These cases frequently require the coordination of large multidisciplinary expert teams and difficult decisions about rehabilitation, future needs, litigation risk and the timing of settlement. Hylton takes a strategic approach from an early stage, working closely with solicitors, experts and the injured person to identify the issues which will ultimately determine the claim.

He acts both unled and with leading counsel in the most substantial cases, including cases involving protected parties and court approval of significant settlements.

Chambers and Partners (2027) - Personal Injury (Band 2) - "Hylton explains everything, always gets on side with clients and is a good all-rounder."

"Hylton has the ability to cut through complex issues with ease, is solution-focused and dependable. He is fantastic with clients and is a fantastic trainer and presenter."

Chambers and Partners (2027) - Clinical Negligence (Band 1) - "Hylton is very approachable and fantastic with clients. He takes a clear methodical approach to cases and is always well prepared and easily able to get to grips with the most complex of medical issues."

Chambers and Partners (2026) - Clinical Negligence (Band 2) - "His advice is strong and pragmatic. We have used his advocacy many times and seen him at trial. He is very clear, concise, gets to the points and cross-examines witnesses very well." "Hylton is a go-to character. He is very accommodating, very calm and measured. He advised on some really quite complicated issues and somehow gets his points across in a matter of bullet points." "He is an exceptional barrister who works in true partnership with solicitors and is excellent with clients. He is thorough and detail-oriented, with a collaborative approach which adds real value." "Hylton Armstrong is a very clear barrister, he gives clear advice and guidance." "Hylton is very sound in his reasoning, comprehensive and professional at all times."

Chambers and Partners (2026) - Personal Injury (Band 2) - "Hylton always puts clients at ease. He is very calm." "Hylton Armstrong is very ambitious and very strategic." "He is very approachable and great with clients. His written advices are really strong. He is a clear and concise advocate, he gets to the point and cross-examines well."

Legal 500 (2026) – Clinical Negligence (Tier 1) – "A very succinct, effective barrister who can tackle many a complex claim with ease. He puts clients, experts and solicitors at ease and instills confidence."

Legal 500 (2026) – Personal Injury (Tier 3) – "He has a breadth and wealth of knowledge, and his cross examination of witnesses and experts is measured and calm."

Chambers and Partners (2025) - Clinical Negligence (Band 2) - "Hylton is a technically brilliant barrister. He deals with matters promptly and effectively." "Hylton is able to cut through complex issues and distil them down to the core points."

Chambers and Partners (2025) - Personal Injury (Band 2) - "Hylton is fantastic with clients and experts alike. He is pragmatic and approachable." "He has excellent client care and has commercial awareness. He's highly experienced at complex personal injury claims." "His advice is always very clear and to the point. He has a really calming manner with clients."

Legal 500 (2025) – Clinical Negligence (Tier 1) – "An incredibly persuasive negotiator with a very personable approach."

Legal 500 (2025) – Personal Injury (Tier 3) – "He is very approachable, highly personable with clients, and thorough."

Chambers and Partners (2024) – Clinical Negligence (Band 2) – "I am always impressed with his knowledge and ability to advise, particularly in respect to complex causation issues." "Hylton is thorough. He has great attention to detail and and has an excellent manner with the lay witnesses." "Hylton is the go-to for a variety of complex cases. Skilled at understanding the client, his advice is balanced and his approach to settlement astute."

Chambers and Partners (2024) – Personal Injury (Band 2) – "Hylton displays a clear understanding of legal issues and expert opinion. He is a very good litigator who is highly skilled at valuing cases." "He has excellent client care skills, and is very analytical and practical in his approach to cases." "Hylton gets to the heart of issues very quickly and can explain a lot of information to clients."

Legal 500 (2024) – Clinical Negligence (Tier 1) – "A brilliant clinical negligence barrister with excellent advocacy skills. His advocacy is calm, controlled and to the point. His relaxed and calm manner puts clients at ease."

Legal 500 (2024) – Personal Injury (Tier 3) – "A reliable junior, who is approachable and gets to the heart of the matter in a clear and concise way. A fighter when necessary."

Chambers and Partners (2023) – Clinical Negligence (Band 2) – "Hylton Armstrong has an established presence in clinical negligence and receives instructions in a broad range of matters. His expertise encompasses inquests into psychiatric and hospital care, as well as failures to diagnose, extending to cases of patient fatality."

Chambers and Partners (2023) – Personal Injury (Band 2) – "Hylton Armstrong is highly regarded for his proficient handling of personal injury claims arising out of serious road traffic accidents and complex employers' liability claims. He acts for both claimants and defendants and has notable experience handling cases involving allegations of fraud."

Legal 500 (2023) – Clinical Negligence (Tier 1) – "Hylton's advice is always succinct, and he has a very efficient style. He is very personable, with a fantastic manner - a great balance between empathy and being robust. He has great understanding of complex medical evidence." "A very calming but knowledgeable presence"

Legal 500 (2023) – Personal Injury (Tier 3) – "A barrister with a very good tactical approach to litigation."

Chambers and Partners (2022) – Clinical Negligence (Band 2) – "Very good at giving practical advice and efficient at dealing with claims." "A very approachable barrister. He is confident, knowledgeable and open to a challenge."

Chambers and Partners (2022) – Personal Injury (Band 2) – "He turns things over quickly and is very thorough. He's very good in conference and in court too."

Legal 500 (2022) – Clinical Negligence (Tier 1) – "An intelligent, client-focused thinker. He relies on the strength of arguments rather than any bullish tactics, which opens channels of communication and makes the process smoother for all parties."

Legal 500 (2022) – Personal Injury (Tier 3) – "He has strong client care skills and is able to advise in a sensitive manner."

Chambers and Partners (2021) – Clinical Negligence (Band 2) – "He is very approachable, on the ball, has a good manner with clients and takes a sensible approach to cases." "He deals with things in an effective and pragmatic manner."

Chambers and Partners (2021) – Personal Injury (Band 2) – "Very approachable and good with clients. He has strong analytical skills and works hard to achieve the best possible outcome for his clients."

Legal 500 (2021) Clinical Negligence – (Band 1) – "Hylton is extremely approachable and very good with clients. He always sets an agenda for a conference so that the client fully understands the purpose. His advice and notes of conference are also concise and helpful."

Legal 500 (2021) Personal Injury – (Band 3) – "Highly skilled and recommended for complex matters."

Legal 500 (2020) Clinical Negligence – (Band 1) – "Great at distilling complex cases for clients.’

Legal 500 (2020) Personal Injury – (Band 3) – "Deals with complex matters well."

Chambers and Partners (2020) Clinical Negligence – (Band 3) – "Has an established presence in clinical negligence and receives instructions in a broad range of matters. His expertise encompasses inquests into psychiatric and hospital care, as well as failures to diagnose, extending to cases of patient fatality. His practice features claims relating to cauda equina syndrome, among other conditions. Strengths: "He has a good attention to detail and is good with clients."

Chambers and Partners (2019) Clinical Negligence – "He is reliable and has good attention to detail." "Very efficient and gets straight to the point."

Legal 500 (2018/2019) – "He has a good manner with clients."

Chambers and Partners (2018) Clinical Negligence – (Band 3) – "Has a growing presence in clinical negligence and receives instructions in a broad range of matters. His expertise encompasses inquests into psychiatric and hospital care, as well as failures to diagnose." Strengths: "He's very approachable and bright, very good with clients." Recent work:  Acted for the family of the deceased in an inquest into failings in psychiatric care after an informal patient committed suicide at home after being collected from the care centre.

Chambers and Partners (2018) Personal Injury – (Band 3) – "Has a broad personal injury practice, acting in fast-track and multi-track claims as well as representing clients at inquests. He regularly undertakes cases arising out of RTAs and incidents occurring on construction sites. He represents both claimants and defendants." Strengths: "Approachable and thorough." "He's someone who inspires confidence and works collaboratively with clients and solicitors. He has a keen eye for detail and is a superb advocate." Recent work:  Achieved a favourable settlement for a claimant who suffered a fractured hip and PTSD following a fall on a bus.

Chambers and Partners (2017) – "His advice is very succinct and he is brilliant in court. He is a safe pair of hands, bright and well prepared."

The Legal 500 (2017) – "He is very bright and has a great rapport with clients."

The Legal 500 (2016) – "A conscientious and realistic lawyer."

The Legal 500 (2015) – "He is robust and provides good advice; a rising star."

The Legal 500 (2014) – "His personal injury and clinical negligence expertise is complemented by his knowledge of motor-related fraud."

The Legal 500 (2013) – "Hylton’s ‘service standards are second to none’."

Personal Injury Bar Association (PIBA)

Leeds & West Yorkshire Medico Legal Society

Association of Personal Injury Lawyers (APIL)

Action against Medical Accidents (AVMA)

Clinical Negligence

• Failure to suture the circumference of a stoma - Settlement at JSM.
• Failure to diagnose chicken pox and sepsis resulting in death - Settlement at JSM.
• Failure to manage diabetes causing amputation of all toes - Settlement at JSM.
• Failure to respond to NHS 111 calls - Settled after inquest.
• Failure to treat caudia equina resulting in loss of urinary function - settlement at JSM.
• Failure to treat postpartum psychosis resulting in suicide - Settlement after JSM.
• Failure to deal with congenital malrotation of bowel as a child - Settlement at JSM.
• Failure to perform cardiac graft operation correctly - Settlement at JSM.
• Failure to manage ulcerative colitis - Settlement at JSM.
• Failure to manage lichens planus causing squamous cell carcinoma - Settlement after JSM.
• Failure to manage chest pain causing myocardial infarction - Settlement at JSM.
• Failure to manage pressure ulcers and risk of falls - Settlement at JSM. 
• Failure to manage bowel tumour causing death - Settlement at JSM.
• Failure to manage infection causing chronic neuropathic nerve injury - Settlement at JSM. 
• Failure to interpret imaging leading to stroke – Settlement at JSM.
• Failure to manage delivery causing 4th degree tear – Settlement at JSM.
• Failure to manage psychological symptoms leading to suicide by hanging – Settlement at JSM.
• Failure to manage pregnancy leading to stillborn baby and psychological injuries – Settlement at JSM.
• Failure to diagnose HIV leading to death – Settlement after JSM.
• Failure to make urology referral leading to reduced life expectancy – Settlement at mediation.
• Failure to diagnose bladder cancer – Settlement at mediation.
• Failure to manage IIH leading to reduced vision – Settlement at mediation.

Road Traffic

• Child struck by vehicle whilst crossing road causing head injury - Settled. 
• Pedestrian struck by bus causing brain injury - Settled. 
• Commuter struck whilst crossing traffic light controlled junction causing brain injury - Settled. 
• Farm worker driving FLT struck by HGV causing spinal injuries - Ongoing. 
• Bus driver suffered fractures causing permanent exacerbation of type II diabetes - Settled. 
• Motorcyclist struck at roundabout causing serious orthopaedic injuries - Settled. 
• Untraced MIB claim concerning rider of a trike who suffered a head injury - Settled.
• Pedestrian spotted by police on a grass verge after suffering brain injury when struck by a van in the middle of the night - Ongoing. 
• Amazon driver thrown off the front of his van while it was being stolen causing brain injury – Settled. 

Employers' & Public Liability

• Labourer suffered crush injury to foot - Settled.
• Technician suffered finger amputation injury whilst using a saw - Settled.
• Technology tutor developed occupational asthma at work - Settled. 
• School pupil died as a result of anaphylactic shock caused by piece of cheese - Settled.
• Accident at work causing significant facial injuries – Settlement at JSM.
• Claimant struck by telehandler causing above knee amputation – Ongoing

Inquests

• Construction worker stepped in front of a crate of falling glass.
• Steel worker died when a shard of metal was projected from a test rig manifold.
• Death of an elderly women who died from burns sustained when she fell into a hot bath
• Fitter whose clothing caught fire whilst using a grinder in an oxygen enriched dry well.
• Psychiatric patient who stabbed himself to death immediately after being allowed home.
• Baby died as a result of antenatal fetal hypoxia.
• Young child died from diabetic ketoacidosis. 
• Musician who died as a result of the Astra Zeneca Covid-19 Vaccine.

Head of Parklane Plowden's Serious Injury group 

Deputy District Judge (Civil - North East)

Recorder (Civil - North East)

Barrister member of the Bar Tribunal and Adjudication Service (BTAS) disciplinary tribunal. 

Is a 90% liability offer 1 working day before a 5 day clinical negligence trial a genuine attempt to settle?

First prosecution of a trust for breaching it's duty of candour

Qualitative vs. Quantitative Care & Material Contribution Causation: A brief look at Reaney v (1) University Hospitals of North Staffordshire NHS Trust (2) Mid Staffordshire NHS Foundation Trusat [2015] EWCA Civ 1119

Adding Allegations to a Clinical Negligence Claim: a brief summary of Mangala Janakarajah v (1) Oxford University Hospitals NHS Trust (2) Mario Petrou [2020)] QBD (Soole J) 03/06/2020

A failed attempt to use Bailey v Ministry of Justice [2009] 1 WLR 15 in ST (A Protected Party by his mother and Litigation Friend KT) v Maidstone & Tunbridge Wells NHS Trust [2015] EWHC 51

Do you have an Agenda? (article for AvMA Newsletter, 2021)

How to approach issues of fact in clinical negligence cases, and analysis of the decision in HTR (by his mother and litigation friend) v Nottingham University Hospitals NHS Trust [2021] EWHC 3228 

Hylton regularly provides internal and external training sessions on various subjects.

Hylton is happy to provide bespoke training to any firm of solicitor on request.  

As part of Parklane Plowden's Law with Lunch initiative Hylton discussed the case of Hill v Witham [2021] EWCA Civ 1312

LLB (Hons) Newcastle University (2007)

BVC, BPP Leeds (2008)