The Competition and Markets Authority (CMA) is adopting a more assertive stance on mergers in the UK care home sector. Its ongoing investigation into Welltower Inc’s acquisition of a substantial UK care home portfolio, alongside a new probe into Y3 Holdings Limited’s completed transaction, signals a heightened regulatory focus on competition in social care markets.
For legal advisers, investors and operators, the message is clear: merger control risk in the care home sector has materially increased.
Partner Charlie Markillie explains the details.
Background: The Welltower acquisition
In October 2025, Welltower completed the acquisition of 649 care homes across the UK. The portfolio includes properties operated by several major providers:
- Barchester Healthcare (275 homes)
- HC-One (279 homes)
- Aria Care (68 homes, including two managed by Asprey)
- Danforth Care (25 homes)
In May 2026, the CMA provisionally concluded that the transaction may lead to a substantial lessening of competition in 30 local areas. Its concerns centre on the potential for increased fees and reduced quality of care for residents.
The CMA’s analytical framework
The CMA’s approach reflects a consistent and increasingly rigorous methodology in healthcare mergers:
- Local market focus: Competition is assessed at a highly granular, geographic level.
- Segmentation of services: Residential care and nursing care are analysed separately.
- Capacity-based analysis: Market share is measured by bed capacity.
Dementia care is incorporated within both residential and nursing segments.
The CMA identified two principal theories of harm.
Proposed remedies: a structural approach
To avoid referral to a Phase 2 investigation, Welltower proposed a package of remedies addressing both forms of concern.
1. Divestment of care homes
Welltower has offered to divest a number of assets, including both property interests and operating businesses.
| Nursing care | Residential care |
| Three freehold homes | One freehold home |
| Eight leasehold homes | Five leasehold homes |
These disposals are structured as full business transfers, including staff, contracts and operational assets, and are designed to reduce market shares below the CMA’s threshold.
The CMA has required an 'upfront buyer' condition, meaning that a suitable purchaser must be identified and agreed before remedies are formally accepted.
2. Operator reallocations
In certain cases, Welltower has proposed replacing operators at specific sites to reduce local concentration.
This includes:
- appointment of new operators for multiple homes;
- and divestment of selected operating businesses.
In support of this remedy, Apex Healthcare Properties LLC has undertaken not to re-enter operating arrangements at affected homes, ensuring the long-term effectiveness of the solution.
Implications for care home transactions
The Welltower case represents a significant development in UK merger control practice and is likely to influence transactional strategy across the care sector.
1. Increased willingness to intervene post-completion
The CMA imposed Initial Enforcement Orders (IEOs) across all four portfolios, requiring the businesses to operate independently pending review.
This has immediate commercial implications:
- integration is delayed or prevented;
- synergies cannot be realised;
- and operating costs may increase.
In parallel, the CMA’s Mergers Intelligence Unit continues to identify completed, non-notified transactions for review.
2. Local market analysis is critical
The CMA’s analysis operates at a local level, often focusing on specific towns or postcode clusters.
A transaction that appears unproblematic on a national basis may give rise to significant concerns in a small number of local areas.
Practical implication: Competition analysis must be undertaken early and should form part of initial commercial decision-making.
3. Transaction structure does not eliminate risk
The CMA will look beyond the legal structure of a transaction. Whether framed as a property acquisition, asset purchase or financing arrangement, any deal conferring material influence may be subject to review.
Practical considerations for advisers
In light of the CMA’s approach, parties should consider the following:
Early-stage competition assessment
Local overlap analysis should be conducted before agreeing heads of terms.
Planning for 'hold separate' obligations
Care home operations must continue to meet regulatory and care standards, even where integration is prohibited.
Robust risk allocation
Transaction documents should address:
- regulatory approval risk;
- responsibility for divestments;
- and financial consequences of delays or remedies.
Voluntary notification strategy
Proactive engagement with the CMA can provide greater certainty compared to post-completion intervention.
Downside scenario modelling
Investment models should reflect the possibility of:
- asset disposals;
- delayed integration;
- and reduced returns.
Conclusion
The CMA’s intervention in the Welltower transaction marks a clear shift towards more intensive scrutiny of care home mergers in the UK.
With a focus on local competition, post-completion enforcement, and structural remedies, the regulator is reshaping the risk landscape for investors and operators alike.
Careful planning, early-stage analysis and proactive engagement with competition authorities will now be essential components of any successful care home transaction.