
RefluxUK Diagnostics
Clinician-oriented GI physiology testing from the UK's leading specialist reflux provider
Diagnostics conceived by doctors for doctors
As clinicians specialising in gastro-oesophageal care, we deeply understand the crucial role high-quality diagnostic physiology testing plays in effective management decisions. These tests are fundamental for achieving optimal patient outcomes. Recognising that not all tests or reports are equal, we created a bespoke diagnostics service tailored specifically to our clinical needs. Originally developed to enhance decision-making for our own patients, this high-standard service is now available to colleagues nationwide.
We provide a national specialist referral service characterised by efficiency, responsiveness, and exceptional customer care. Our highly trained GI physiologists collaborate closely with specialist gastroenterologists to deliver rapid, co-reported diagnostic assessments. Our goal is to support referring upper GI surgeons, gastroenterologists, ENT surgeons, and other clinicians with industry-leading investigations, insightful collaboration, clear communication, and trusted, high-quality reporting.
Why choose RefluxUK diagnostics?
- Built by experts: RefluxUK Diagnostics is clinician-led, informed by extensive clinical experience. You pose the clinical questions – we deliver clear informed answers.
- Best-in class physiologists: Our tests are conducted by highly skilled physiologists, experts in both performing and interpreting diagnostic tests.
- Dual-reporting: Every test report is dual-reviewed by our specialist physiologists and expert gastroenterologists, ensuring thorough and clinically relevant interpretation.
- Direct communication: We encourage open dialogue – our clinicians and physiologists are directly accessible for consultation, clarifying any aspect of the results.
- Reflux MDT review: All cases are reviewed by our Multidisciplinary Team. Referring clinicians are welcome to participate, enhancing patient outcomes and mutual learning.
- RefluxUK network: All referrers will have the option of joining our unique Social Network. There’ll soon be an app connecting like-minded consultants and enabling sharing of clinical dilemmas, scenarios, test results and other more general comments with colleagues across the country.
- Exceptional patient service: Our dedicated administrative team provides comprehensive patient support, ensuring rapid turnaround and seamless coordination with your practice.
- Collaborative development: Your feedback shapes our growth. Regular input from referrers helps us continuously refine our service to better support your needs.
The dual-reporting difference
At Reflux UK we aim to deliver a physiology service of the highest possible standards.
We are proud to have a team of highly experienced clinical scientists specialising in gastro-intestinal physiology who work collaboratively with our team of expert gastroenterologists. This plays a vital role in delivering a comprehensive patient-centred report. By uniting the precision physiological data with the clinical acumen of experienced gastroenterologists, this multidisciplinary approach enables the creation of integrated holistic reports that go beyond isolated test results.
Clinical scientists bring detailed objective measurements of GI function, while the gastroenterologists provide nuanced interpretation within the broader context of the patient’s symptoms, history and overall health. Together they ensure that every report is not only scientifically robust but also clinically meaningful – facilitating accurate diagnoses, informed treatment plans and ultimately improved patient outcomes.

RefluxUK MDT review
Our cases are regularly discussed at our established RefluxUK Multidisciplinary Team (MDT) meetings. These sessions involve our surgeons, gastroenterologists, clinical scientists, clinical practitioners, dieticians, and occasionally other specialists, including speech and language therapists and ENT surgeons. This collaborative forum facilitates collective decision-making, mutual learning, optimised treatment planning, and comprehensive support for referring consultants.
We warmly invite referring clinicians to join these MDT meetings to discuss patient cases, gain valuable insights, and benefit from collective clinical expertise. We firmly believe that this shared approach significantly enhances patient outcomes. Please join us and experience these benefits first-hand.

A selection of tests and clinical applications available
- High resolution oesophageal manometry with impedance
- 24-hour pH-impedance monitoring
- High resolution oesophageal manometry with impedance
- Hydrogen-methane breath testing for SIBO / IMO
- Lactose / fructose malabsorption
- BRAVO wireless oesophageal pH monitoring
Our Physiology Locations
RefluxUK's Physiology Team

Dr Jamal Hayat
Consultant Gastroenterologist
BSc • MDRes • MRCP

Dr Ziva Mrevlje-Simon
Consultant Gastroenterologist
MBBS • MD

Dr Jafar Jafari
Consultant Clinical Scientist
MD • PhD • AGIP • HCPC • HSSE

Mr James Endersby
Clinical Scientist
MEng • MSc

Ms Alice Henderson
Clinical Scientist
BSc • MSc

Ms Priscilla Appiahene
Physician Associate
BSc • MSc • PA-R

Mr John Hayman
Consultant Clinical Scientist
BSc • MSc • HSSE

Mrs Anna Wolak
Clinical GI Physiologist
BScN