---
title: "QUEST DIAGNOSTICS HOLDINGS LTD. — Ownership Dossier"
canonical: https://whiteintel.dev/entity/d2dde625-e283-5185-918c-b754d655a3a2
json: https://whiteintel.dev/api/public/dossier/d2dde625-e283-5185-918c-b754d655a3a2
identifier: oo:GB-COH-09339493
risk: Low
source: WhiteIntel corporate-ownership graph
---

# QUEST DIAGNOSTICS HOLDINGS LTD.

**Type:** Company  
**Identifier:** `oo:GB-COH-09339493`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/d2dde625-e283-5185-918c-b754d655a3a2  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/d2dde625-e283-5185-918c-b754d655a3a2  

## Ownership & control

### Owners / controllers

- **QUEST DIAGNOSTICS INTERNATIONAL HOLDINGS LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/24a9dac7-5951-5932-9df9-55b5825daeb0
- **Quest Diagnostics Incorporated** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/64806bde-0a22-4a9a-aff9-2e021e720d6f

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

1. **QUEST DIAGNOSTICS INTERNATIONAL HOLDINGS LIMITED** — beneficial owner 87.5% → *QUEST DIAGNOSTICS HOLDINGS LTD.*
1. **Quest Diagnostics Incorporated** — beneficial owner 87.5% → *QUEST DIAGNOSTICS HOLDINGS LTD.*
2. **Quest Diagnostics Incorporated** — beneficial owner 87.5% → *QUEST DIAGNOSTICS INTERNATIONAL HOLDINGS LIMITED*

## Company profile (live · UK Companies House)

- **Company number:** `09339493`
- **Status:** Active
- **Type:** Private Limited Company
- **Incorporated:** 2014-12-03
- **Registered office:** 1ST FLOOR, 48 CHANCERY LANE, LONDON, WC2A 1JF
- **SIC:** 64209 - Activities of other holding companies n.e.c.

## Provenance

- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/09339493
- companies_house_bulk — https://find-and-update.company-information.service.gov.uk/company/09339493

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **QUEST DIAGNOSTICS HOLDINGS LTD.**. Human view: https://whiteintel.dev/entity/d2dde625-e283-5185-918c-b754d655a3a2 · Structured JSON: https://whiteintel.dev/api/public/dossier/d2dde625-e283-5185-918c-b754d655a3a2._

_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"._