SUBJECT-4218.dossier · government agency · status: active
IU
subject of file

Investment Security Unit

UK government unit overseeing foreign investment in sensitive sectors
Tracked because UK government unit overseeing foreign investment in sensitive sectors · 5 documented connections
Facts on record2
Connections mapped5
Sources cited11
Evidence: 2S
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 company → [regulatory filing] → government agency → [regu... 3121× PATTERN person → [regulatory filing] → government agency → [regul... 2430× PATTERN company → [oversight] → government agency → [regulatory f... 709× PATTERN organization → [regulatory filing] → government agency → ... 690× PATTERN instrument → [regulatory filing] → government agency → [r... 510×
Connection Map
Key Connections
→ Securities and Exchange Commission government agency
regulatory_filing
Investment Security Unit filed filing with the SEC on 2023-09-06
← Sir Julian Lewis person
oversight
Lewis's ISC was denied oversight of ISU despite handling sensitive technology investments
Facts (2)
Data Freshness
Stale Last update: 185d ago · Avg age: 566d
Confidence Tiers: Primary Source — cross-referenced government/corporate filings Pending Review — sourced but not independently verified AI Inference — analytical hypothesis from cross-referencing
✓ Verified Findings (1)
Independently re-checked: a second model read the source artifact and confirmed it supports the extracted claim.
✓ verified Partially Corroborated Investment Security Unit filed filing with the SEC on 2023-09-06. Accession number: N/A.
Raw Filing Records (1) — unsourced metadata
Pending Review Search scope note: No usaspending contracts found for "Investment Security Unit" 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: Investment Security Unit — USASpending contracts (no results)
All Connections (5)
→ Cabinet Office (UK) government agency
part_of inferential since 2023
The Investment Security Unit is noted under the UK Cabinet Office in the documented facts, specifically listed adjacent to 'Cabinet Office (UK)' and 'National Security Secretariat' in the known entities list, indicating it operates within or alongside the UK Cabinet Office.
→ National Security Secretariat government agency
affiliation inferential since 2023
The Investment Security Unit is listed in close proximity to the National Security Secretariat in the known entities list, suggesting a likely organizational affiliation within UK government structures.
→ Securities and Exchange Commission government agency
regulatory_filing primary since 2023
Investment Security Unit filed filing with the SEC on 2023-09-06
UK government unit inferential since 2018
The Investment Security Unit within the UK's National Security Secretariat reviews transactions involving entities covered under the UK-US Mutual Defence Agreement.
← Sir Julian Lewis person
oversight confirmed
Lewis's ISC was denied oversight of ISU despite handling sensitive technology investments
Sources (11)
2026 UNVERIFIED Research: Investment Security Unit — Parliamentary records (no results) parliamentary_record Processed 📜 Receipt
2025-11-07 ↗ SEC EDGAR: filing — Investment Security Unit (2025-11-07) sec_filing Processed 📜 Receipt
2024-10-04 ↗ SEC EDGAR: filing — Investment Security Unit (2024-10-04) sec_filing Processed 📜 Receipt
2023-09-06 ↗ SEC EDGAR: filing — Investment Security Unit (2023-09-06) sec_filing Processed 📜 Receipt
2025-05-28 ↗ SEC EDGAR: filing — Investment Security Unit (2025-05-28) sec_filing Processed 📜 Receipt
2022-03-01 ↗ SEC EDGAR: filing — Investment Security Unit (2022-03-01) sec_filing Processed 📜 Receipt
2026 UNVERIFIED Research: Investment Security Unit — Court records (no results) court_document Processed 📜 Receipt
2026 UNVERIFIED Research: Investment Security Unit — Lobbying disclosures (no results) government_disclosure Processed 📜 Receipt
2026 UNVERIFIED Research: Investment Security Unit — Corporate registrations (no results) government_disclosure Processed 📜 Receipt
2026 UNVERIFIED Research: Investment Security Unit — USASpending contracts (no results) contract Processed 📜 Receipt
2023-09-06 ↗ SEC EDGAR: filing — Investment Security Unit (2023-09-06) web_search Processed 📜 Receipt