Flexible sigmoidoscopy cost in the UK: what you pay privately (2026)

A private flexible sigmoidoscopy examines the lower part of the large bowel with a short flexible camera, usually without sedation and with a simple enema preparation, for rectal bleeding, looser stools or after a screening finding.

Because we could not confirm a published price for flexible sigmoidoscopy, this page does not offer a figure. Each provider sets its own price, so the practical task is to ask several for an itemised estimate and compare what each covers.

You usually use an enema before the test to clear the lower bowel, then lie on your side while a short camera is passed to the left side of the colon. Air is used to open the bowel, which can cause cramping, but it passes quickly.

If something suspicious is seen, a biopsy may be taken or a full colonoscopy advised. Ask how that would be priced and arranged.

A single guide figure for flexible sigmoidoscopy can mislead, because the final amount depends on factors like these.

• Extent of the examination: it sees only the lower bowel, so the price is usually below that of a full colonoscopy, though not every hospital publishes it.

• Sedation or no sedation: most people have none, which keeps cost and recovery time down.

• Biopsies and pathology.

• Setting: clinic room versus endoscopy unit.

• Consultant fee and follow-up appointment.

Providers define a package differently, so two quotes are only comparable once you line up what each covers. The table lists what is typically in and what is often billed separately for this procedure.

Insurers usually cover sigmoidoscopy on referral for symptoms such as rectal bleeding.

Insurers often agree a procedure code and a fee ceiling in advance. Self-pay patients should ask whether instalment finance is offered and what the total repayable would be, as the representative rate and terms differ by lender.

NHS flexible sigmoidoscopy is used for symptoms and, in some areas, in screening, with urgent referrals prioritised.

NHS care is free at the point of use, and for non-urgent consultant-led treatment the standard is 18 weeks from referral. You also have the right to choose where you are referred in England. Local waits differ, so ask what applies near you.

Most people go home soon afterwards and resume normal activity, though you may feel wind-like discomfort briefly.

No one plans for things to go wrong, but a short conversation about extra costs now can save difficulty later.

• A normal sigmoidoscopy does not exclude disease in the upper colon, so a full colonoscopy may be advised, adding cost.

• Rare risks include a tear in the bowel wall or bleeding after biopsy.

Quotes only compare fairly when they cover the same things. Put these questions to every provider you approach.

• Is the price for the examination only, or does it include biopsy and a follow-up appointment?

• What preparation is required?

• When would a full colonoscopy be advised, and what would it cost?

• Is sedation optional?

• Will I receive one price covering the hospital, the consultant and the anaesthetic, or several bills from different parties?