---
title: "Mr John Keith Barrett — Ownership Dossier"
canonical: https://whiteintel.dev/entity/66632575-5456-5b43-a703-e628449dd527
json: https://whiteintel.dev/api/public/dossier/66632575-5456-5b43-a703-e628449dd527
identifier: oo-person:GB-COH-PER-11046712-bi0d9Y5jMDBIeWdv1nWwmKCGYgM
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# Mr John Keith Barrett

**Type:** Person  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `oo-person:GB-COH-PER-11046712-bi0d9Y5jMDBIeWdv1nWwmKCGYgM`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/66632575-5456-5b43-a703-e628449dd527  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/66632575-5456-5b43-a703-e628449dd527  

## Ownership & control

### Holdings / subsidiaries

- **MCM MANAGEMENT SERVICES LTD** (beneficial owner) — 50% — https://whiteintel.dev/entity/7fcee396-0d48-50e2-b331-01e2f4bdb3d8

## Provenance

- OpenOwnership — https://www.openownership.org

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Mr John Keith Barrett**. Human view: https://whiteintel.dev/entity/66632575-5456-5b43-a703-e628449dd527 · Structured JSON: https://whiteintel.dev/api/public/dossier/66632575-5456-5b43-a703-e628449dd527._

_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"._