---
title: "Mr John Mark Greechan — Ownership Dossier"
canonical: https://whiteintel.dev/entity/f2d0723e-a24e-5aaa-b02b-a668561ba4ec
json: https://whiteintel.dev/api/public/dossier/f2d0723e-a24e-5aaa-b02b-a668561ba4ec
identifier: oo-person:GB-COH-PER-SC729400-FzhKaosWnrLnK0-Z2Rvkctjnj3c
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# Mr John Mark Greechan

**Type:** Person  
**Jurisdiction:** GB  
**Identifier:** `oo-person:GB-COH-PER-SC729400-FzhKaosWnrLnK0-Z2Rvkctjnj3c`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/f2d0723e-a24e-5aaa-b02b-a668561ba4ec  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/f2d0723e-a24e-5aaa-b02b-a668561ba4ec  

## Ownership & control

### Holdings / subsidiaries

- **TREQUARTISTA MEDIA LIMITED** (beneficial owner) — 100% — https://whiteintel.dev/entity/66e22432-bfd0-54d1-90a2-7e7a8b914ae8

## Provenance

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

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Mr John Mark Greechan**. Human view: https://whiteintel.dev/entity/f2d0723e-a24e-5aaa-b02b-a668561ba4ec · Structured JSON: https://whiteintel.dev/api/public/dossier/f2d0723e-a24e-5aaa-b02b-a668561ba4ec._

_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"._