SUBJECT-4209.dossier · instrument · status: active
UA
subject of file

UKUSA Agreement

1946 UK-USA intelligence sharing agreement formalizing Five Eyes cooperation
Tracked because 1946 UK-USA intelligence sharing agreement formalizing Five Eyes cooperation · 4 documented connections
Facts on record1
Connections mapped4
Sources cited6
Evidence: 1S
Network web → Timeline → Compare with… → Position Drift → Coverage tone → View on Graph → Export CSV JSON Dossier ← Entity Directory
Stated vs Revealed
No documented contradictions on file.
PATTERN institution → [treaty partner] → instrument → [predecesso... 4× PATTERN government agency → [UK coordinating body] → instrument →... 4× PATTERN instrument → [predecessor agreement] → instrument → [trea... 4× PATTERN instrument → [predecessor agreement] → instrument → [UK c... 4×
Connection Map
Key Connections
→ Five Eyes Intelligence Oversight and Review Council organization
governing framework relationship
The UKUSA Agreement forms the foundational treaty for the Five Eyes intelligence alliance. The Five Eyes Intelligence Oversight and Review Council oversees the implementation and compliance aspects of the pact governing SIGINT cooperation among the Five Eyes nations.
← UK National Cyber Security Centre institution
treaty_relationship
NCSC operates under the UKUSA Agreement, the foundational treaty for signals intelligence cooperation between UK and US.
← UK-US Mutual Defence Agreement instrument
predecessor agreement
The UK-US Mutual Defence Agreement is part of the broader UKUSA intelligence-sharing framework, which evolved from the BRUSA Agreement.
Facts (1)
Data Freshness
Stale Last update: 186d ago · Avg age: 274d
Confidence Tiers: Primary Source — cross-referenced government/corporate filings Pending Review — sourced but not independently verified AI Inference — analytical hypothesis from cross-referencing
Raw Filing Records (1) — unsourced metadata
Pending Review Search scope note: No sec filings found for "UKUSA Agreement" in automated database search as of 2026-04-13. This reflects search coverage limits, not confirmed absence from public record.
Added: 13 Apr 2026 UNVERIFIED Research: UKUSA Agreement — SEC filings (no results)
All Connections (4)
governing framework relationship primary since 1946
The UKUSA Agreement forms the foundational treaty for the Five Eyes intelligence alliance. The Five Eyes Intelligence Oversight and Review Council oversees the implementation and compliance aspects of the pact governing SIGINT cooperation among the Five Eyes nations.
← BRUSA Agreement instrument
type_of_agreement inferential since unknown
The BRUSA Agreement is directly referenced alongside the UKUSA Agreement in the entity list, indicating they are related intelligence-sharing agreements.
treaty_relationship primary since 1946
NCSC operates under the UKUSA Agreement, the foundational treaty for signals intelligence cooperation between UK and US.
predecessor agreement primary since 1946
The UK-US Mutual Defence Agreement is part of the broader UKUSA intelligence-sharing framework, which evolved from the BRUSA Agreement.
Sources (6)
2026 UNVERIFIED Research: UKUSA Agreement — Parliamentary records (no results) parliamentary_record Processed 📜 Receipt
2026 UNVERIFIED Research: UKUSA Agreement — Court records (no results) court_document Processed 📜 Receipt
2026 UNVERIFIED Research: UKUSA Agreement — Lobbying disclosures (no results) government_disclosure Processed 📜 Receipt
2026 UNVERIFIED Research: UKUSA Agreement — Corporate registrations (no results) government_disclosure Processed 📜 Receipt
2026 UNVERIFIED Research: UKUSA Agreement — USASpending contracts (no results) contract Processed 📜 Receipt
2026 UNVERIFIED Research: UKUSA Agreement — SEC filings (no results) sec_filing Processed 📜 Receipt