In April 2013, under the terms of the Health and Social Care Act 2012, a reorganisation of the NHS took place regarding the administration of the NHS. Primary care trusts (PCTs) and strategic health authorities (SHAs) were abolished, and replaced by clinical commissioning groups (CCGs). CCGs now commission most of the hospital and community NHS services in the local areas for which they are responsible. Commissioning involves deciding what services a population is likely to need, and ensuring that there is provision of these services.