Mr Haris Charalampos Markakis

Mr Markakis is a leading Consultant Surgeon based at University College Hospital, The London Clinic and The London Independent Hospital. 

Specializing in minimally invasive (keyhole) and robotic-assisted surgery, he provides expert care for complex abdominal conditions, weight management, and upper gastrointestinal disease.

Known for his expertise in minimally invasive surgery, Mr Markakis is the highest-volume bariatric surgeon at University College Hospital, where he leads the management of the most complex surgical cases and revisional procedures.

Bariatric & Metabolic Surgery (Weight Loss)

Mr Markakis offers a comprehensive, holistic approach to weight management, combining the latest pharmacological treatments with advanced surgical intervention. He specializes in:

• Primary Procedures: Gastric sleeve, Roux-en-Y gastric bypass, One-anastomosis ("mini") gastric bypass (OAGB), Gastric band, and SADI-S.
• Medical Weight Loss: Expert management using GLP-1 medications (such as Wegovy and Saxenda).
• Revisional Surgery: Specialized care for patients experiencing weight regain or complications (such as acid reflux) following previous surgery, including endoscopic options like Apollo Overstitch.
• Complex Cases: Management of high-risk patients and those requiring complex, multi-disciplinary care for severe obesity.

Advanced Hernia Surgery

Utilizing cutting-edge Robotic and Laparoscopic techniques, Mr Markakis performs over 95% of hernia repairs via a "keyhole" approach. This results in less postoperative pain and a faster return to daily activities.

• Expertise: Inguinal, incisional, umbilical, epigastric, lumbar, and parastomal hernias.
• Innovative Techniques: He was a UK pioneer in eTEP Rives-Stoppa and Transversus Abdominis Release (TAR), allowing complex abdominal wall reconstructions to be performed minimally invasively rather than through large open incisions.
• Diastasis Recti: Surgical repair of rectus abdominis divarication.
• Optimization: He uniquely utilizes his weight management expertise to optimize patients before surgery, significantly reducing the risk of recurrence and complications.

Upper GI & Gallbladder Surgery

Mr Markakis is a specialist in the management of gallstones, and reflux disease.

• Gallbladder Specialist: Performs 100% of cholecystectomies (gallbladder removal) laparoscopically, even in cases of morbid obesity. He maintains an exemplary safety record, with zero bile duct or bowel injuries recorded in his practice.
• Reflux & Hiatus Hernia: Advanced management of acid reflux, achalasia, and large paraoesophageal hernias using the latest prosthetic materials and tension-free repair techniques.
• Endoscopy: Highly skilled in both diagnostic and therapeutic endoscopy for the management of gastrointestinal pathology and surgical complications.

Areas of clinical interest

Laparoscopic procedures; keyhole surgery; Robotic surgery;

Bariatric surgery; Obesity; Diabetes Surgery ; Roux-en-Y gastric bypass; RYGB; One-anastomosis gastric bypass; OAGB; Sleeve gastrectomy; Single anastomosis duodeno-ileostomy; SADI;

Gastro-intestinal tract (surgery); Upper gastrointestinal disease ; Gallstones; Biliary colic; Gallbladder polyps; Gallbladder surgery; Laparoscopic cholecystectomy; Acid reflux; Hiatus hernia; Paraoesophageal hernia; Laparoscopic hiatus hernia repair; Nissen fundoplication; Toupet fundoplication; Achalasia; Heller's myotomy;

Hernia Surgery; Inguinal hernia; Spigelian hernia; Incisional hernia; Epigastric hernia; Flank hernia; Parastomal hernia; Laparoscopic inguinal hernia repair; TEP; TAPP; Open inguinal hernia repair; Laparoscopic TAPP ventral hernia repair; IPOM; eTEP Rives-Stoppa retromuscular hernia repair; Transversus abdominis release; Component separation; Robotic hernia surgery;
Lumps and Bumps; Appendicitis; Laparoscopic appendicectomy;