Relationship dossier
Guernsey
United Kingdom
Relationship assessment
A close constitutional relationship combines Guernsey's domestic autonomy with UK responsibilities for defence and international relations.
Guernsey toward United Kingdom
+35Guernsey conducts its domestic government within a constitutional relationship with the UK and relies on the UK for defence and international representation. Its self-governing status means that most domestic policy is managed by Guernsey rather than directed by the UK.
United Kingdom toward Guernsey
+45The UK is responsible for Guernsey's defence and international relations, while Guernsey retains autonomy over most domestic matters. This division of responsibilities is the central durable arrangement between the governments.
Overall relationship
+45The relationship is defined by Guernsey's self-governing Crown Dependency status: the UK handles defence and international relations, while Guernsey governs most domestic affairs. This enduring constitutional framework supports close practical ties while preserving substantial local autonomy.
How to read these scores
Scores are rough judgments, not objective measurements or current verification. Directional scores describe government policy and conduct, not public opinion. The overall score is an independent estimate, never an average.
- −100
- Extreme sustained hostility
- −50
- Substantially adversarial
- 0
- Mixed or neutral, supported by knowledge
- +50
- Substantially cooperative
- +100
- Exceptionally close sustained partnership
“Not assessed” means there is no recorded score. Pair existence makes no claim about diplomatic recognition or established relations.
Relationship context
Overview
Guernsey is a self-governing Crown Dependency, not part of the United Kingdom. It manages most domestic affairs, while the UK has responsibilities for its defence and international relations. Their relationship is shaped by this constitutional arrangement and practical cooperation, while Guernsey retains substantial autonomy.
Key developments
The constitutional relationship provides for Guernsey's domestic self-government and UK responsibility for defence and international relations.
Major uncertainties
- The scope and implementation of specific UK–Guernsey cooperation arrangements are unclear.
- The extent of Guernsey's involvement in UK-led international agreements varies by subject.