---
title: "Mr Mark Michael Byrne — Ownership Dossier"
canonical: https://whiteintel.dev/entity/db2f449a-4252-514f-afc0-ef873eb3c3f7
json: https://whiteintel.dev/api/public/dossier/db2f449a-4252-514f-afc0-ef873eb3c3f7
identifier: oo-person:GB-COH-PER-OC347094-7rqhrcckAyXwtvvfRtCw3vEYhOA
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# Mr Mark Michael Byrne

**Type:** Person  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `oo-person:GB-COH-PER-OC347094-7rqhrcckAyXwtvvfRtCw3vEYhOA`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/db2f449a-4252-514f-afc0-ef873eb3c3f7  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/db2f449a-4252-514f-afc0-ef873eb3c3f7  

## Ownership & control

### Holdings / subsidiaries

- **JB MANAGEMENT (UK) LLP** (beneficial owner) — 50% — https://whiteintel.dev/entity/28be73b2-3339-52a9-a5d9-75dcffae98c4

## Provenance

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

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Mr Mark Michael Byrne**. Human view: https://whiteintel.dev/entity/db2f449a-4252-514f-afc0-ef873eb3c3f7 · Structured JSON: https://whiteintel.dev/api/public/dossier/db2f449a-4252-514f-afc0-ef873eb3c3f7._

_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"._