1. Bariatric surgery is an appropriate treatment for people with Type 2 diabetes and obesity (BMI equal to or greater than 35 kg/m2) not achieving recommended treatment targets with medical therapies, especially where there are other obesity-related co-morbidities. Under some circumstances people with a BMI of 30–35 kg/m2 should be eligible for surgery

2. It is up to each health system to determine whether bariatric surgery with its support services is economically appropriate

3. Surgery should be considered as complementary to medical therapies to reduce microvascular and cardiovascular risk

4. Patients should be assessed and managed by experienced multidisciplinary teams

5. Glycaemic control should be optimized peri-operatively and should be closely monitored after surgery

6. Ongoing and long-term nutritional supplementation and support must be provided to patients after surgery

7. Apart from conventional procedures now in use, new techniques and devices should be explored in research settings only. Conventional procedures should be standardized. Other techniques, variations and novel devices can be introduced when supported by an evidence base