Colonoscopy / flexible sigmoidoscopy – Information for patients with diabetes treated by tablets and non insulin injectable medication Colonoscopy/flexible sigmoidoscopy (Morning appointment) – Information for patients with insulin-treated diabetes Colonoscopy/flexible sigmoidoscopy (Afternoon appointment) – Information for patients with insulin-treated diabetes and their carers Upper GI endoscopy – Information for patients with insulin-treated diabetes and their carers Upper GI endoscopy – Information for patients with diabetes treated by tablets or non insulin injectable medication