Cardiff Agreement 2026

Cardiff agreement 2026 has renewed debate over the future of the United Kingdom’s devolution settlement. Read here to understand the lessons for Indian Federalism from this.

The signing of a Memorandum of Understanding (MoU) in Cardiff by political leaders from Scotland, Wales and Northern Ireland has renewed debate over the future of the United Kingdom’s devolution settlement.

The agreement invokes the principle of self-determination and calls for constitutional change, against the backdrop of Scotland’s demand for another independence referendum, Northern Ireland’s potential reunification poll and Wales’ demand for greater constitutional powers.

The development provides a useful comparative perspective for India, particularly on asymmetric federalism, fiscal federalism, regional aspirations, constitutional flexibility and Centre-State relations.

The UK: A Devolved Unitary State

The United Kingdom has historically been a unitary state, with Parliamentary sovereignty vested in Westminster. However, since the late 1990s, substantial powers have been devolved to Scotland, Wales and Northern Ireland.

This has created an unusual constitutional arrangement: a unitary constitutional structure with asymmetric devolution and strong regional identities

Major Historical Milestones

What is Devolution?

Devolution refers to the transfer of powers from a central government to subnational institutions while retaining ultimate constitutional authority at the centre.

• In the UK, Westminster Parliament’s Devolved institutions are Scotland, Wales and Northern Ireland
• However, the extent and nature of devolved powers differ among the three territories.
• This makes UK devolution asymmetric rather than uniform.

What Does the Cardiff Agreement Seek?

The Cardiff Agreement represents a political assertion of regional self-determination and constitutional change.

Its major themes include:

1. Self-Determination

• The participating political leaders argue that democratic mandates should lead to constitutional change and that Westminster should facilitate such processes.

2. Greater Regional Cooperation

The pact envisages practical cooperation among Scotland, Wales and Northern Ireland, including areas such as:

• Economy
• Energy
• Regional development

3. Pro-European Orientation

• The signatories share a political vision favouring closer association with the European Union, contrasting with the UK-wide Brexit decision.
• This is significant because Scotland and Northern Ireland voted differently from the UK-wide outcome in the 2016 Brexit referendum.

Westminster’s Constitutional Position

The UK Government has rejected the pact’s demands concerning referendums.

A key constitutional precedent is the UK Supreme Court’s 2022 ruling in Reference by the Lord Advocate.

The Court unanimously held that the Scottish Parliament does not have the legal competence to unilaterally legislate for an independence referendum without Westminster’s consent.

Northern Ireland: A Different Constitutional Mechanism

• Northern Ireland has a distinct constitutional arrangement under the Good Friday Agreement (1998).
• The UK Secretary of State for Northern Ireland may order a border poll when it appears likely that a majority would support Irish reunification.
• Therefore, Scotland and Northern Ireland operate under different constitutional routes concerning their respective questions of self-determination.

Brexit and the Devolution Debate

Brexit exposed tensions within the UK’s asymmetric constitutional arrangement.

In the 2016 referendum:

• Scotland voted predominantly to Remain.
• Northern Ireland also voted to Remain.
• The UK-wide majority voted to Leave.

Consequently, territories with different electoral preferences were subject to the same UK-wide outcome.

This has contributed to debates over what may be described as a democratic or constitutional mismatch between UK-wide decisions and devolved preferences.

The UK Internal Market Act 2020 also became a point of contention, with devolved governments raising concerns about its implications for devolved regulatory powers.

UK Devolution vs Indian Federalism

The comparison is particularly useful for understanding the different constitutional foundations of the two systems.

Asymmetric Federalism: A Tool for Managing Diversity

The key comparative lesson is that uniformity is not always necessary for national integration.

India itself uses asymmetric arrangements to accommodate distinctive regional circumstances.

Examples include:

• Articles 371-371J
• Fifth Schedule
• Sixth Schedule
• Special constitutional arrangements for certain regions
• Autonomous District Councils in specified tribal areas

The principle is that different regions may require different institutional arrangements while remaining within the same constitutional Union.

Thus, asymmetry can function as an accommodation mechanism for linguistic, cultural, tribal and historical diversity.

Fiscal Federalism and Regional Aspirations

Constitutional disputes are often connected with perceptions of fiscal fairness.

UK

• The Barnett Formula determines changes in public expenditure allocations for Scotland, Wales and Northern Ireland.
• Debates over resource distribution have consequently become intertwined with broader questions about autonomy and the fairness of the Union.

India

India has a constitutionally structured system of fiscal federalism involving:

• Finance Commission- Article 280
• Tax devolution
• Grants-in-aid
• GST Council
• Centrally sponsored schemes

The key lesson is that transparent and credible fiscal arrangements can strengthen cooperative federalism.

Lessons for India

1. Accommodation of Regional Aspirations

• India’s experience demonstrates the importance of accommodating regional identities through constitutional and political mechanisms.
• The States Reorganisation Act, 1956, for example, reorganised states substantially along linguistic lines.
• The broader principle is recognition of identity, institutional accommodation and greater political integration

2. Strengthen Intergovernmental Dialogue

Persistent disputes are less likely to become constitutional crises when institutional channels for consultation remain effective.

Important Indian mechanisms include:

• Inter-State Council- Article 263
• GST Council
• NITI Aayog Governing Council
• Zonal Councils

These can facilitate dialogue between the Union and States.

3. Preserve Fiscal Equity

• Perceptions of unequal resource distribution can intensify regional grievances.
• A credible Finance Commission and transparent fiscal-devolution mechanisms are therefore important for maintaining trust in India’s federal structure.

4. Use Asymmetry Constructively

• Special constitutional provisions should be viewed as mechanisms for accommodating diversity, rather than necessarily as threats to national unity.

5. Manage Demographic Representation

• India’s future delimitation debates could raise questions concerning the relationship between population, representation and federal balance
• States that have successfully controlled population growth may have concerns about changes in their relative representation.
• This makes continued discussion on Rajya Sabha representation, federal consultation and equitable political representation important.

The Larger Principle: Unity Through Accommodation

The UK experience demonstrates an important constitutional principle that national unity cannot be sustained solely through institutional centralisation; it also requires political legitimacy among constituent territories.

For India, this does not imply replicating the UK’s constitutional model. India’s historical, demographic and constitutional circumstances are substantially different.

Instead, the relevant lesson is the importance of maintaining:

• Constitutional flexibility
• Fiscal fairness
• Institutional dialogue
• Regional representation
• Accommodation of diversity
• National integration

Challenges in Applying the UK Experience to India

The comparison must nevertheless be approached carefully.

• Different Constitutional Foundations: The UK is based on parliamentary sovereignty, whereas India’s Constitution is the supreme legal framework.
• Different Historical Contexts: The UK consists of historically distinct nations incorporated through different unions, whereas India’s political integration followed a different historical trajectory.
• Different Constitutional Treatment of Secession: India constitutionally maintains the Union’s territorial integrity, while Northern Ireland has a specific constitutional mechanism for determining its future status.
• Different Forms of Asymmetry: UK devolution primarily developed through parliamentary legislation, while India’s asymmetric arrangements are embedded substantially within the Constitution.

Therefore, the UK’s experience should serve as a comparative lesson rather than a template for India.

Way Forward for Indian Federalism

India can strengthen its federal architecture through:

1. Institutionalised consultation: Make Centre-State consultation more regular and substantive.
2. Cooperative fiscal federalism: Ensure predictable, transparent and equitable resource sharing.
3. Constructive asymmetry: Use differentiated arrangements where justified by historical, cultural or geographical circumstances.
4. Stronger Inter-State Council: Use Article 263 mechanisms more effectively for resolving emerging Centre-State disputes.
5. Respect for constitutional domains: Maintain clarity regarding Union and State legislative and administrative responsibilities.
6. Inclusive regional development: Reduce economic disparities that can translate into political grievances.

Conclusion

The Cardiff Agreement highlights the continuing constitutional tensions within the UK’s asymmetric devolution settlement and demonstrates how questions of identity, democratic mandates, fiscal relations and constitutional authority can become interconnected.

For India, the central lesson is not about replicating British devolution, but about recognising that federalism is an ongoing process of negotiation and accommodation.

India’s constitutional experience shows that regional diversity can be accommodated through asymmetric federalism, fiscal devolution, institutional dialogue and constitutional flexibility while preserving the integrity of the Union.

“Unity in diversity” is sustained not by eliminating regional differences, but by creating constitutional and democratic institutions capable of accommodating them.