---
title: "Mr John Martin Warwick Greener — Ownership Dossier"
canonical: https://whiteintel.dev/entity/eecfd628-5ba8-4a6c-b9c4-d408afa8ea8e
json: https://whiteintel.dev/api/public/dossier/eecfd628-5ba8-4a6c-b9c4-d408afa8ea8e
identifier: psc:UAPlqkmZX1kGBRUhnYulmR7qGaQ
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# Mr John Martin Warwick Greener

**Type:** Person  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `psc:UAPlqkmZX1kGBRUhnYulmR7qGaQ`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/eecfd628-5ba8-4a6c-b9c4-d408afa8ea8e  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/eecfd628-5ba8-4a6c-b9c4-d408afa8ea8e  

## Ownership & control

### Holdings / subsidiaries

- **Mitsubishi Chemical Holdings Corporation** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/6a0d054c-84e6-5f70-8c33-ceff732a7249

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Mr John Martin Warwick Greener**. Human view: https://whiteintel.dev/entity/eecfd628-5ba8-4a6c-b9c4-d408afa8ea8e · Structured JSON: https://whiteintel.dev/api/public/dossier/eecfd628-5ba8-4a6c-b9c4-d408afa8ea8e._

_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"._