September 2017: New recommendations have been added on intensive lifestyle-change programmes and metformin for people at risk of type 2 diabetes.
Recommendations are marked as  if the recommendation is new or the evidence has been reviewed.
Where recommendations end , the evidence has not been reviewed since the original guideline.
Minor changes since publication
September 2020: The details about recommended physical activity levels in recommendations 1.9.1, 1.11.2 and the glossary have been replaced with a link to the UK Chief Medical Officers' physical activity guidelines.