A guidance for health professionals, policymakers and others working to promote physical activity, sport and exercise for health benefits has been published by UK Departmentt of Health and Social Care.

It is a report from the Chief Medical Officers in the UK on the amount and type of physical activity people should be doing to improve their health.
This report presents an update to the 2011 physical activity guidelines issued by the four Chief Medical Officers (CMOs) of England, Scotland, Wales and Northern Ireland. The UK CMOs draw upon global evidence to present guidelines for different age groups –including older adults - covering the volume, duration, frequency and type of physical activity required across the life course to achieve health benefits.

The document is available and can be downloaded here.