United Kingdom
United Kingdom ranks #10 of 242 on the Composite Power Index (9.6/100), scored on military spending, active personnel, nuclear arsenal, economic size and logistics. Its Instability Index is 15.7/100 (#152 most fragile). Every figure below carries its source and year. Data read 2026-08-04.
What drives the instability score
Capability and economy · click a metric to compare
CINC is a composite index (already contains military spending, personnel, energy & population) — shown for reference; it is not added into the Composite Power Index to avoid double-counting. Each figure carries its own source year; vintages can differ.
Capability profile
Trajectory
Governance
Energy
Strategic Relationships
Allies (42)
- Hungarydefense 1999
- Polanddefense 1999
- Czechiadefense 1999
- Greecedefense 1992
- Germanydefense 1990
- Portugaldefense 1988
- Spaindefense 1988
- Malaysiadefense 1957
- Italydefense 1954
- Libyadefense 1953
- Icelanddefense 1949
- Luxembourgdefense 1949
- Netherlandsdefense 1949
- Norwaydefense 1949
COW alliance ties — includes historical pacts; defense first.
Disputes (275)
COW Dyadic MID, 1816–2014 — historical register, not live rivalries. Count = militarized disputes; year = most recent; ● = peak intensity.
Signals
Conflict forecast (ViEWS, 2029-04-01): 0% risk
Arms imports (SIPRI Arms Transfers, 2025): 9 transfers
46% of imports from United States — supplier dependence
Displacement (UNHCR): 517 refugees originated · 0 IDPs · 581.1K hosted
Belgium
Germany
Denmark
France
Ireland