There are currently 195 CCGs across England and their purpose is to commission most of the hospital and community NHS services in the local areas for which they are responsible.
Commissioning involves deciding what services are needed for diverse local populations, and ensuring that they are provided.
CCGs are assured by NHS England, which retains responsibility for commissioning primary care services such as GP and dental services, as well as some specialised hospital services. Many GP services are now co-commissioned with CCGs.
NHS trusts provide hospital care to people in England. These can be acute trusts, ambulance trusts, mental health trusts or community trusts. There are currently 54 mental health trusts in England.
There are currently 42 STPs covering all of England. These partnerships involve local NHS organisations and councils drawing up shared proposals to improve health and care in the areas they serve. They were created to bring local health and care leaders together to plan around the long-term needs of local communities.
In some area, STPs have evolved to become integrated care systems (ICS), a new form of even closer collaboration between the NHS and local councils. The NHS Long Term Plan set out the aim that every part of England will be covered by an integrated care system by 2021, replacing STPs.
Health Education England currently work across thirteen local areas, grouped in to four regions. These regions and local areas align with NHS England's sustainability and transformation partnership (STP) boundaries.
Whereas, NHS England currently work across five regions, covering healthcare commissioning and delivery, and providing advice on professional leadership on finance, nursing, medical, specialised commissioning, patients and information, human resources, organisational development, assurance and delivery.
These regions are likely to evolve over the next year.