---
title: "Arthur J. Gallagher & Co — Ownership Dossier"
canonical: https://whiteintel.dev/entity/af1ebdb2-3aa3-5ce0-9c1b-ed92b4357fa2
json: https://whiteintel.dev/api/public/dossier/af1ebdb2-3aa3-5ce0-9c1b-ed92b4357fa2
identifier: oo:GB-COH-OC393713
risk: Low
source: WhiteIntel corporate-ownership graph
---

# Arthur J. Gallagher & Co

**Type:** Company  
**Identifier:** `oo:GB-COH-OC393713`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/af1ebdb2-3aa3-5ce0-9c1b-ed92b4357fa2  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/af1ebdb2-3aa3-5ce0-9c1b-ed92b4357fa2  

## Ownership & control

### Owners / controllers

- **GALLAGHER HOLDINGS (UK) LIMITED** (beneficial owner) — 75% — https://whiteintel.dev/entity/c38c7c9f-1406-50a1-8f9d-3dd7c8e533b4
- **ARTHUR J. GALLAGHER (UK) LIMITED** (beneficial owner) — 50% — https://whiteintel.dev/entity/fc1e918b-ab95-5636-8d25-6c63eb843d8b
- **Alistair Anthony Lockhart-Smith** (beneficial owner) — https://whiteintel.dev/entity/6e73cfab-7976-59cb-b01c-ae81646723f2
- **Arthur J. Gallagher (Uk) Limited** (beneficial owner) — https://whiteintel.dev/entity/71f2c624-681d-4872-9b1a-2cf5a29ed5a8
- **Alistair Anthony Lockhart-Smith** (beneficial owner) — https://whiteintel.dev/entity/16ab938e-cd20-47f6-948f-679f36ad75d5
- **Arthur J. Gallagher & Co** (beneficial owner) — https://whiteintel.dev/entity/813ea148-78f6-584f-b40f-3aec3c2ee766
- **Arthur J. Gallagher & Co** (beneficial owner) — https://whiteintel.dev/entity/24a7ed78-d88c-470c-a18a-6d7650189692
- **Gallagher Holdings (Uk) Limited** (beneficial owner) — https://whiteintel.dev/entity/4ca7cbee-c7f2-49ed-afe8-36f3270a17c3

### UBO chain (walk to the ultimate owner)

A **22-step** ownership/control chain to the ultimate beneficial owner is resolved for this entity. The full cited chain unlocks with a paid API key or a one-off dossier — https://whiteintel.dev/pricing.

## Provenance

- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/OC393713

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Arthur J. Gallagher & Co**. Human view: https://whiteintel.dev/entity/af1ebdb2-3aa3-5ce0-9c1b-ed92b4357fa2 · Structured JSON: https://whiteintel.dev/api/public/dossier/af1ebdb2-3aa3-5ce0-9c1b-ed92b4357fa2._

_Risk levels are heuristic investigative leads, not legal determinations of beneficial ownership. Every claim carries a source; an absent edge means "not yet observed in current sources", not "does not exist"._