Consultant Radiologist
Dr Derfel ap Dafydd
BSc · MB BCh · MRCS · MRCP · FRCR · PhD
2016
appointed consultant
Cardiff
MB BCh, 1st-class BSc
RM
The Royal Marsden
About Dr ap Dafydd
Dr Derfel ap Dafydd is a consultant radiologist at The Royal Marsden NHS Foundation Trust - one of the world's leading cancer centres - where he has practised since his consultant appointment in 2016. He has a special interest in imaging of the head and neck and of the urological system, and works across the Trust's Chelsea, Sutton and Cavendish Square sites.
He obtained his medical degree (MB BCh) at Cardiff University in 2005, having also completed a first-class intercalated BSc in Medical Genetics as an undergraduate. He gained membership of the Royal Colleges of Surgeons and Physicians (MRCS, MRCP) during his early postgraduate training at Barts and the Royal London, before completing his radiology training at Imperial and subspecialty training in oncological imaging at the Royal Marsden. He also holds a PhD.
Dr ap Dafydd is the imaging lead for the Royal Marsden's Head and Neck unit and Renal unit, and performs ultrasound-guided biopsies of the neck and of soft tissue sarcomas. He has been on the GMC Specialist Register for clinical radiology since 2014 and is a GMC-recognised trainer.
He previously served as Training Programme Director and educational lead for the Royal Marsden Radiology Training Programme (stepping down in 2025), and is Associate Honorary Faculty at The Institute of Cancer Research (ICR). He is also the principal trial radiologist for the Head and Neck and Renal research units, with active research interests in intra-oral ultrasound-guided Trans-oral Robotic Surgery, ultrasound-guided intra-tumoral injection of immunotherapy, and post-radiotherapy MRI evaluation of the prostate and pelvic floor.
At a Glance
- Medical School: Cardiff University
- NHS base: The Royal Marsden NHS Foundation Trust, London
- Private Practice: The Royal Marsden Hospital, London · BUPA Cromwell Hospital, London · HCA Lister Hospital, London
- GMC: 6115296
- Fellowship: The Royal Marsden Hospital (Oncological Imaging)
Request a Report
Reports from Dr ap Dafydd and our consultant team are available within 24-48 hours at a fixed price.
Obtain Your ReportScans Dr ap Dafydd Reports
Trained in oncological imaging at one of the world's leading cancer centres, Dr ap Dafydd reports MRI, CT, ultrasound and plain film across most body parts, subspecialising in head and neck, thyroid and urological imaging.
MRI
MRI of most body parts, subspecialising in Head & Neck, thyroid and urology, including dedicated examinations of the kidneys, prostate, bladder and whole body MRI.
CT
CT of all body parts, including CT neck, dedicated CT of the urological system, cancer staging CTs of the body and formal response assessment.
Ultrasound
Ultrasound (including biopsy) of the Head & Neck, thyroid, abdomen-pelvis, urological system and soft tissue masses.
X-ray
Adult plain film of the chest, abdomen, spine and limbs.
Not sure which type of scan you have? We will identify it for you. Simply get in touch and we will confirm the modality and match your images to the right specialist before any report is produced.
Clinical Expertise
Dr ap Dafydd combines the breadth of a tertiary cancer-centre radiologist with focused subspecialty depth in head and neck, thyroid and urological imaging, underpinned by hands-on image-guided intervention and an active research portfolio.
Head & Neck Imaging
Imaging lead for the Royal Marsden Head and Neck unit. Subspecialty expertise in the CT, MRI and ultrasound assessment of tumours of the salivary glands, oral cavity, pharynx, larynx and cervical lymph nodes, including tumour staging, treatment response and post-treatment surveillance.
Urological (Prostate & Kidney) Imaging
Imaging lead for the Royal Marsden Renal unit. Specialist MRI of the prostate and kidneys for the detection, characterisation and staging of urological cancers, including post-radiotherapy MRI evaluation of the prostate and pelvic floor.
Thyroid Imaging
Ultrasound and cross-sectional imaging of the thyroid and neck, with ultrasound-guided fine-needle aspiration and biopsy to characterise thyroid nodules and neck lumps and to guide management.
Oncological Imaging
Fellowship-trained in oncological imaging at the Royal Marsden. Expert interpretation of cancer imaging across diagnosis, staging, treatment-response assessment and long-term surveillance in a dedicated cancer-centre setting.
Image-Guided Biopsy & Intervention
Performs ultrasound-guided aspiration and biopsy of the neck and thyroid and of soft tissue sarcomas, alongside intra-oral ultrasound - obtaining accurate tissue diagnosis to direct treatment.
Research & Clinical Trials
Principal trial radiologist for the Head and Neck and Renal research units, with active research in intra-oral ultrasound-guided Trans-oral Robotic Surgery, ultrasound-guided intra-tumoral immunotherapy injection, and post-radiotherapy prostate and pelvic-floor MRI.
Training & Qualifications
-
1
2005
MB BCh & BSc Medical Genetics (First Class) - Cardiff University
Qualified in medicine at Cardiff University (University of Wales), having also completed a first-class intercalated BSc in Medical Genetics as an undergraduate.
-
2
Postgraduate Training
MRCS & MRCP - Barts and the Royal London
Gained membership of the Royal Colleges of Surgeons and Physicians (MRCS, MRCP) during his early postgraduate training at Barts and the Royal London before entering radiology.
-
3
Radiology Training
FRCR - Radiology Training at Imperial
Completed specialist radiology training at Imperial, gaining Fellowship of the Royal College of Radiologists (FRCR).
-
4
2014
GMC Specialist Register - Clinical Radiology
Entered the GMC Specialist Register for clinical radiology (September 2014).
-
5
Fellowship
Oncological Imaging Fellowship - The Royal Marsden
Undertook further subspecialty training in oncological imaging at the Royal Marsden, focusing on head and neck and urological cancer imaging.
Career Highlights
-
·
2016 - Present
Consultant Radiologist - The Royal Marsden
Appointed consultant radiologist at The Royal Marsden NHS Foundation Trust, working across the Chelsea, Sutton and Cavendish Square sites with a special interest in head and neck and urological imaging.
-
·
Ongoing
Imaging Lead - Head & Neck and Renal Units
Imaging lead for the Royal Marsden's Head and Neck unit and Renal unit, performing ultrasound-guided biopsies of the neck and of soft tissue sarcomas.
-
·
Until 2025
Training Programme Director - Royal Marsden Radiology
Served as Training Programme Director and educational lead for the Royal Marsden Radiology Training Programme until 2025. Remains a GMC-recognised trainer.
-
·
Ongoing
Associate Honorary Faculty - The Institute of Cancer Research (ICR)
Holds an appointment as Associate Honorary Faculty at The Institute of Cancer Research (ICR), the Royal Marsden's academic research partner.
-
·
Ongoing
Principal Trial Radiologist - Head & Neck and Renal Research
Principal trial radiologist for the Head and Neck and Renal research units, with active research in Trans-oral Robotic Surgery, intra-tumoral immunotherapy and post-radiotherapy prostate MRI.
Professional Memberships & Qualifications
Royal College of Radiologists (RCR)
FRCR - Fellow
Royal College of Physicians (RCP)
MRCP - Member
Royal College of Surgeons (RCS)
MRCS - Member
General Medical Council (GMC)
Specialist Register - Clinical Radiology (2014)
GMC-Recognised Trainer
Recognised trainer on the GMC register
Doctor of Philosophy (PhD)
Postgraduate research doctorate
Request a Report from Doctorum
Reports from UK consultant radiologists within 24-48 hours. Fixed price. No GP referral required.