In October 2006, all primary care trusts (PCTs) outside the London area were restructured.
[1] At the same time, the number of strategic health authorities (SHAs) (which have responsibility for the PCTs) were also decreased (from 28 to 10).
These ten new SHAs largely mimic the geography of the government office regions.
[3] As a result of the Health and Social Care Act 2012, all PCTs and SHAs were abolished on 31 March 2013, and replaced by clinical commissioning groups taking over the function of commissioning health and care services.
NHS London was the strategic health authority for the capital, with responsibility for 31 PCTs which operated in five clusters.
[7] The Bedfordshire & Hertfordshire; Norfolk, Suffolk & Cambridgeshire; and Essex strategic health authorities were merged in July 2006 to make the East of England SHA.