CCGs (Clinical Commissioning Groups) were established as part of the Health and Social Care Act in 2012. They are groups of general practices, which come together in each area to commission the best services for their patients and population.
ICS (Integrated Care Systems) are new partnerships between the organisations that meet health and care needs across an area, to coordinate services and to plan in a way that improves population health and reduces inequalities between different groups. ICS will replace Clinical Commissioning Groups (CCGs) by April 2022 and cover a wider geographic area than CCGs.
Devolved nations – health is primarily a devolved matter across the four nations which make up the UK. Among these variations are differing regional structures, Scotland and Wales have Health Boards, England have CCGs (currently being superseded by Integrated Care Systems) and Northern Ireland has Health and Social Care Trusts.