Dr Alexandros Toskas is a Consultant Gastroenterologist at St Mark's Hospital with subspecialist expertise in Inflammatory Bowel Disease (IBD) and Endoscopy. He completed his PhD in Gastroenterology at the Aristotle University of Thessaloniki, where his research focused on cytokine expression in IBD mucosa, and has since published extensively on IBD pathogenesis, biologic therapies, and infliximab optimisation.

He undertook specialist training in the UK, followed by an advanced endoscopy fellowship at St Mark's Hospital. He is JAG-accredited in diagnostic and therapeutic colonoscopy and upper GI endoscopy. Dr Toskas has presented at major international meetings including ECCO, ESGE, and UEG, and contributed to multicentre studies on perianal Crohn's disease and novel IBD therapeutics.

He is a Fellow of the European Board of Gastroenterology and Hepatology (FEBGH). At St Mark's, he has led quality improvement initiatives, including the development of local guidelines for acute severe colitis and inpatient IBD care pathways. In parallel with his clinical and research commitments, he serves as Gastroenterology Module Lead for Brunel University undergraduate students, with an active role in teaching, training, and mentoring.

His academic and clinical work reflect a strong commitment to advancing personalised IBD care through translational research, and multidisciplinary collaboration.

Clinical Interests

• Inflammatory Bowel Disease (IBD), including Crohn's disease and ulcerative colitis
• Luminal Gastroenterology
• Diagnostic and Therapeutic Endoscopy
• Gastroscopy (OGD)
• Flexible Sigmoidoscopy
• Colonoscopy
• Video Capsule Endoscopy
• Percutaneous Endoscopic Gastrostomy (PEG) Insertion
• Polypectomy (Bowel Polyp Removal

• BSG

• ECCO

• ESGE

• Hellenic Society of Gastroenterology

• GMC