---
title: "Arthur J. Gallagher & Co — Ownership Dossier"
canonical: https://whiteintel.dev/entity/12b031c7-46ee-5ecf-8592-fdcbbe9a6676
json: https://whiteintel.dev/api/public/dossier/12b031c7-46ee-5ecf-8592-fdcbbe9a6676
identifier: oo:GB-COH-OC404329
risk: Low
source: WhiteIntel corporate-ownership graph
---

# Arthur J. Gallagher & Co

**Type:** Company  
**Identifier:** `oo:GB-COH-OC404329`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/12b031c7-46ee-5ecf-8592-fdcbbe9a6676  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/12b031c7-46ee-5ecf-8592-fdcbbe9a6676  

## Ownership & control

### Owners / controllers

- **ARTHUR J. GALLAGHER (UK) LIMITED** (beneficial owner) — 50% — https://whiteintel.dev/entity/fc1e918b-ab95-5636-8d25-6c63eb843d8b
- **GALLAGHER HOLDINGS (UK) LIMITED** (beneficial owner) — 75% — https://whiteintel.dev/entity/c38c7c9f-1406-50a1-8f9d-3dd7c8e533b4
- **Mr Rupert William Swallow** (beneficial owner) — https://whiteintel.dev/entity/b4f5f619-35fb-5a56-9804-d2a583b61ddb
- **Mr Robert Matthew Fairfield** (beneficial owner) — https://whiteintel.dev/entity/1cf37087-7ccc-5a5b-abe2-85b403507e47
- **Arthur J. Gallagher (Uk) Limited** (beneficial owner) — https://whiteintel.dev/entity/71f2c624-681d-4872-9b1a-2cf5a29ed5a8
- **Arthur J. Gallagher & Co** (beneficial owner) — https://whiteintel.dev/entity/813ea148-78f6-584f-b40f-3aec3c2ee766
- **Mr Robert Matthew Fairfield** (beneficial owner) — https://whiteintel.dev/entity/d78ad475-14b1-4f35-a3d0-284cc19c28ac
- **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
- **Mr Rupert William Swallow** (beneficial owner) — https://whiteintel.dev/entity/38f92515-2ea1-4950-9ab5-dcfa19c4b23a

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

A **24-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/OC404329

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Arthur J. Gallagher & Co**. Human view: https://whiteintel.dev/entity/12b031c7-46ee-5ecf-8592-fdcbbe9a6676 · Structured JSON: https://whiteintel.dev/api/public/dossier/12b031c7-46ee-5ecf-8592-fdcbbe9a6676._

_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"._