Meet Mr Alistair Slesser

Mr Alistair Slesser is a high volume Consultant Colorectal and General Surgeon. He is an active member of a busy colorectal and general surgery unit where his main focus is in performing minimally invasive colorectal cancer surgery. In addition, as part of his practice he investigates, manages and performs surgery for all colorectal conditions including diverticular disease, inflammation of the colon, rectal prolapse, piles, fistula in ano, pilonidal sinus disease, anal fissure and rectal bleeding. He is an expert in endoscopy and regularly performs endoscopies. He performs a wide variety of elective and emergency general surgery including surgery for gallstone disease, hernias including complex incisional hernias and skin lesions. 

Surgery Room

Surgery tailored to your needs.

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Operation Room

Practice Areas


Bowel Resections


Operation Room

Colonoscopy and gastroscopy are some of the best ways to exclude any major bowel or stomach/gullet issues. If you have any new or worrying bowel symptoms such as a change in bowel habit or bleeding or new upper GI symptoms Mr Slesser can arrange an urgent endoscopy.

Expert in performing major bowel resections for colorectal cancer, diverticular disease and inflammatory bowel disease using minimally invasive techniques. If you are considering such surgery, Mr Slesser will tailor the best surgical approach for you.

Pilonidal sinus

Proctology issues can be very troubling. Mr Slesser practices multiple techniques for all proctology conditions. At your appointment he will thoroughly assess your problem and will be able to offer you a definitive surgical solution. 


Day surgery

If you suspect that you have gallstones, Mr Slesser will organise investigations to confirm the diagnosis. He regularly performs keyhole surgery to remove gallbladders and can arrange to perform this promptly for you.


Umbilical/Incisonal hernias

Mr Slesser performs both open and minimally invasive approaches for all hernias and will advise you on the best approach for yourself. He has an interest in repairing large incisional hernias and performs abdominal wall reconstructions.

Skin lumps


Benign skin lesions such as lipomas can be a nuisance. In addition, any new skin lesion can be concerning. Once Mr Slesser has reviewed your skin lesion he will ensure that your surgery is performed promptly.