Integrated Care Board (ICB) mergers scheduled for April 2026 won’t rewrite the legal framework for adult social care. ICB mergers mainly change who social care works with and how, rather than changing core legal duties. The Care Act still applies. CQC regulation remains unchanged. On paper, much stays the same.
But in practice, the landscape around adult social care is shifting in ways that will be felt day-to-day. The biggest changes won’t sit in legislation - they’ll show up in relationships, decision-making, and how systems organise themselves around people’s care.
A new map of health and care relationships
ICB mergers will reshape Integrated Care System (ICS) footprints, so they align better with combined authorities and upper-tier local authority boundaries. These changes will begin in April 2026, with a second wave expected in 2027.
Because ICS and ICB boundaries are the same, every merger redraws the system that adult social care operates within.
For some areas, this will simplify things. Providers and councils that previously worked across multiple ICBs may now find themselves aligned to just one. This has the potential to streamline conversations, reduce duplication, and bring clearer accountability.
But not everywhere will feel simpler. In some cases, counties or cities may find themselves newly split across different systems. This introduces complexity, especially for providers working across geographical boundaries or supporting people who move between services.
Leadership and representation will also need to shift. Directors of adult social services, provider forums, and care associations will need to re-establish their place within new ICBs and refreshed Integrated Care Partnerships (ICPs). Where entirely new ICBs are created, ICPs will need to be rebuilt from the ground up.
This isn’t just a structural exercise. It impacts who’s in the room, whose voice is heard, and how decisions get made.
Commissioning, contracts and market shaping
At a technical level, existing NHS contracts will transfer to new ICBs through statutory mechanisms. This means providers shouldn’t expect immediate re-procurement simply because of a merger.
But it also doesn’t mean things will stand still.
Guidance is clear that contracts should be reviewed to ensure they still fit the needs of the new, larger organisations. For adult social care providers, especially those delivering NHS-funded services, this creates both uncertainty and opportunity.
Services linked to hospital discharge, intermediate care, and community health are particularly likely to be revisited. As system footprints grow, there may be a push towards more consistent, system-wide approaches to commissioning.
This could bring benefits. Greater alignment across a larger geography may reduce variation and create more predictable demand. But it could also risk losing the nuance of local markets, where provision is often shaped by very specific community needs.
Market shaping may become more strategic and standardised, particularly in areas like urgent community response, reablement, and step-down care. For providers, this could influence everything from bed capacity planning to workforce deployment.
Voice, influence and partnership working
If there’s one area where these mergers really matter, it’s influence.
National guidance consistently describes adult social care providers as essential partners in integrated care. But experience tells a more complicated story. Representation is often limited, and evidence from early ICS implementation shows that a single “social care partner member” on a board rarely captures the diversity of the sector.
Mergers amplify that challenge. As ICBs grow larger, there’s a real risk that they become more distant from local providers and communities.
That makes strong, organised representation more important than ever.
Place-based forums, provider networks, and care associations will play a critical role in making sure adult social care has a collective, credible voice. Without that, there’s a risk of decisions being made about the sector, rather than with it.
At the same time, mergers create a window of opportunity. New governance structures, refreshed constitutions, and re-established ICPs mean there’s space to rethink how adult social care is involved.
This is the moment to push for clearer mechanisms. That might mean system-level provider councils, stronger representation on key committees, or more explicit commitments to co-production.
Influence doesn’t happen by accident. It needs to be built, organised, and sustained.
Operational impacts: data, pathways and workforce
Behind the scenes, ICB mergers involve significant technical change. New organisation codes, shifting GP alignments, and complex digital and information governance updates are all part of the process.
While much of this sits within NHS structures, the effects will be felt at the interfaces with adult social care.
Data is a good example. Changes to ICB structures will affect how activity, discharge, and quality data are reported and shared. Providers and local authorities will need to check that existing dashboards, reporting systems, and data-sharing agreements still function as expected.
Workforce is another area to watch. With ICBs facing running-cost reductions alongside mergers, there’s a risk that capacity for system leadership and transformation is stretched.
That could slow progress on joint workforce initiatives, at least in the short term. For adult social care, it reinforces the importance of sector-led collaboration, whether through local workforce boards, provider alliances, or partnerships with organisations like Skills for Care.
What should adult social care do now?
There’s a consistent message running through national guidance: engagement matters. ICBs are expected to work closely with adult social care through these changes.
But experience suggests that engagement isn’t always consistent, and those who wait to be invited in often find themselves on the margins.
There are three practical areas to focus on:
- First, understand your new system. Map where your organisation sits within the new footprint. Identify which ICB you’ll be working with, where key NHS partners will sit, and how boundaries might affect your services.
- Second, strengthen your collective voice. Whether through existing care associations or new provider networks, make sure adult social care is organised and represented. A clear, united voice is far more effective than fragmented, individual input.
- Third, protect day-to-day delivery. Confirm contract continuity, clarify points of contact, and sense-check data flows and escalation routes. During periods of structural change, it’s the basics that keep services running safely.
A moment of change, not a change of purpose
The 2026 ICB mergers are, at their core, about NHS structures, geography, and efficiency. But their impact on adult social care is real.
They reshape relationships. They influence how decisions are made. They change how systems come together around people’s needs. But, while structures may shift, the purpose doesn’t.
Supporting people to live well, with the right care in the right place, remains exactly the same.
