Expert Spotlight: Rick Miller, Dietitian Expert Witness

21.09.2026
 / 
by Mr Rick Miller

Rick Miller: Dietitian Expert Witness in Malnutrition, Artificial Feeding and Clinical Negligence

I’m a Registered Dietitian and founder of Miller Health, and I’m instructed regularly as a dietitian expert witness in medical negligence and personal injury cases involving malnutrition, enteral and parenteral feeding, and nutritional standards of care. My background spans NHS acute practice, private consultant-led care at King Edward VII’s Hospital, and elite sports nutrition at Olympic level, and that combination gives me a distinctive frame of reference when I’m reviewing records: I know what was realistically achievable in a given clinical setting, not just what would have been ideal.

What Inspired My Career in Nutrition and Dietetics

My route into dietetics began in performance nutrition rather than clinical practice. I studied a BSc in Human Biology at St Andrews, having transferred from medicine, followed by an MSc in Sport and Exercise Nutrition at Loughborough, before working with Olympic-level athletes from 2008. It was the clinical questions athletes asked me, ones that fell outside a sports nutritionist’s scope, that drew me towards clinical dietetics. I completed a Postgraduate Diploma in Dietetics at Leeds Met and have been registered as a dietitian since 2010.

How Sports Science and Clinical Training Shape My Expert Opinion

Sport science teaches you to reason from measurement and trajectory: intake against requirement, and the difference between a plateau and a decline over time. Clinical dietetics adds an understanding of pathology and risk. Together, they’ve shaped how I approach medico-legal work: I reason from the trajectory in the clinical records rather than from the diagnosis on the front sheet. That’s exactly what a court needs when the question is whether harm was accelerated, or was always going to happen.

A Focus on Men’s Health

I founded Miller Health around the premise of executive health for men. Men tend to present late, get screened poorly, and remain under-represented in nutrition services tailored to them. Miller Health now operates from 25 Harley Street, across the UK, and more recently in Gibraltar and Spain, offering accessible diagnostics and a specialist clinical team.

My Clinical Practice Across the NHS, Private Care and Miller Health

My early NHS years, 2010 to 2013, covered acute and complex care: intestinal failure, parenteral nutrition, surgical recovery, community nutrition support, secure mental health and paediatrics. That period set the standard of care I now assess in medico-legal cases: acute and outpatient practice, staffing constraints, communication gaps, malnutrition screening tool inconsistency, and inappropriate escalation routes.

My private practice at King Edward VII’s Hospital involves more complex adult and paediatric work, with more time per patient and further diagnostics at my disposal. I also work with medical insurance companies and conduct some medico-legal clinical assessments where a domiciliary visit isn’t appropriate. Miller Health is different again: most of our clients are looking for a longer-term, preventative approach, and I work with many of them for years as their goals change and develop.

The value of holding all three is that when I review a set of records, I know from experience what was realistically achievable in that setting on that day, which is a different question from what would have been ideal.

Where Gastroenterology, Malnutrition and Sports Nutrition Connect

They look different, but they’re the same discipline. All three are about matching delivered nutrition to requirement when absorption, appetite or access is compromised. A short bowel patient and an endurance athlete are both problems of intake, absorption and demand. And gastroenterology is where malnutrition is generated, so understanding the gut is what lets you understand why the weight loss happened, not merely that it did.

Artificial Feeding Regimes: A Particular Area of Expertise

A number of my instructing cases require a deep understanding of artificial feeding: nasogastric, PEG, PEJ and RIG feeding, home and hospital parenteral nutrition, short bowel syndrome and intestinal failure, refeeding risk, neurological injury and stroke where swallow is unsafe, paediatric ketogenic therapy, and children with faltering growth or ARFID.

The challenge is that these regimens are only as good as their delivery. Prescription or supply problems, tube displacement, feeds interrupted for procedures leaving a patient nil-by-mouth, and a high monitoring burden all create multiple failure points, and patients needing artificial feeding support rely on many members of a healthcare team getting it right.

Refeeding syndrome, where a patient, typically already malnourished, who hasn’t eaten for several days is fed too quickly, causing life-threatening electrolyte disturbances, is an immediate risk I look out for. It’s easy to identify on paper; it’s the prescribing and monitoring that follow where things can go very wrong. Because these patients are managed by several disciplines at once and accountability is genuinely distributed, this is often the hardest part of any negligence review.

Orthopaedic Recovery and Rehabilitation

Treating orthopaedic surgery recovery and sports injury patients has taught me that recovery is where nutrition is most obviously causal, and most often overlooked. Protein and energy requirements rise, intake falls, and the deficit accumulates while the emphasis stays on the orthopaedic injury itself. A nutritional deficit is cumulative and dated, so it can be reconstructed from the records. A rehabilitation plan without a nutritional component isn’t just suboptimal, it’s incomplete.

Instructing a Dietitian Expert Witness: Common Pitfalls in Malnutrition and Enteral Feeding Claims

These are the pitfalls I see most often when reviewing medical negligence claims:

  • Screening treated as compliance. A MUST score exists, so the file looks compliant, but nothing follows it. The breach is most commonly in the escalation, not the screening.
  • The prescription mistaken for the delivery. What was prescribed is in the notes; what actually went in is in the administration and fluid balance records, or from asking the patient themselves. The gap between the two is frequently the case.
  • Duty dated from the dietetic referral. The trigger is almost always earlier, in the nursing or medical record, and quite often the referral date flatters the defence.
  • Deficit confused with causation. Weight loss is commonly easy to prove, but attributing it to a specific outcome requires trajectory, timing and an alternative explanation ruled out, and that separation has to be explicit.
  • The bundle gets paginated to the dietetic notes alone. Nutrition lives across nursing, medical, dietetic, speech and language therapy and pharmacy records, so an incomplete bundle produces a confidently wrong opinion. I often request a fuller bundle to understand the whole picture.
  • Today’s guidance applied to yesterday’s care. Clinical guidance evolves, but the standard is the guidance and local policy in force at the time. The trust’s nutrition policy for that period is a document worth asking for early.

What Records I Look For to Assess Standard of Care

When I’m instructed on a case involving artificial feeding regimes, here’s what I’m looking for in the records:

  • The complete nursing record, not extracts: MUST scores with the weights, heights and dates behind them, food record charts, fluid balance charts.
  • Feed prescriptions with the administration records, including every interruption, held feed, displaced tube and hour off feed.
  • The weight and anthropometry series with raw dates, so a trajectory can be plotted rather than asserted.
  • Biochemistry around initiation and through the first days of feeding, to establish whether refeeding risk was accounted for.
  • Tube placement and confirmation records, including the checks and imaging where a nasogastric tube is involved.
  • The trust nutrition policy in force at the time, the dietetic service specification and staffing, and the referral route.
  • Multidisciplinary records: swallow assessments, medical decisions on route of feeding, capacity, consent and best interests where relevant.
  • Governance: incident reports, tissue viability, safeguarding referrals, and any complaint response.
  • The instructing solicitor’s statement of the legal test and the standard of proof, which is theirs to set, not mine.

My Advice on Whether a Case Needs a Dietetic Expert

If you’re a solicitor unsure whether a case needs a dietetic expert, here’s how I’d suggest thinking about it:

  • Ask one screening question: is nutrition the mechanism of the alleged harm, or a consequence of it? Failures in screening, prescribing, delivering or monitoring nutrition are dietetic. Weight loss downstream of a missed diagnosis is for another expert, although I can still opine on trajectory within my field.
  • A dietitian usually sits alongside the MDT, such as a gastroenterologist, speech and language therapist, paediatrician or nursing expert, rather than instead of them, and speaks only to the nutritional standard.
  • The cheap way to find out is a short screening opinion rather than a full report. It tells you whether there’s a case before anyone spends substantial amounts.
  • Don’t leave it to quantum. Lifelong enteral or parenteral feeding, ketogenic or other specialist dietary therapy and specialised products carry cost of care consequences that are easy to price wrongly without dietetic input, and far easier to challenge later.
  • Ask early. Records requests are where cases are won or lost, and I can tell you which records to ask for while you can still ask.

Instructing Rick Miller as a dietitian expert witness

I’m available for instruction on medical negligence and personal injury cases involving malnutrition, artificial feeding, gastroenterology-related nutrition failures, and nutritional standards of care across NHS, private and rehabilitation settings. [Contact McCollum Consultants] to discuss instructing me on your case.