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By Fiona McDonald and Rima Evans
2 April 2026
The new footprints formed by the merging and clustering of integrated care boards (ICB) across England have gone live.
As of 1 April the number of ICBs has reduced from 42 to 36 as part of the ongoing restructuring being carried out to meet their cost reduction requirements.
See the map created by our sister title Management in Practicefor full details of the new boundary changes that have come into effect and the complete lists below.
The government announced last year that ICBs needed to cut their running costs by 50%, equating to reducing staff by about 12,500 across health systems.
To achieve this, some ICBs have ‘clustered’ together where they will remain separate legal entities but will work together through shared leadership and combined teams.
NHS England has confirmed that 20 ICBs are clustering.
Meanwhile, six new ICBs have also been established across England through the merger of 12 existing ICBs. There has also been a change to the boundary of Hampshire and Isle of Wight ICB.
A total of nine ICBs will remain unchanged.
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