---
title: "Mr David Leigh Mason — Ownership Dossier"
canonical: https://whiteintel.dev/entity/c8dca067-b28a-4df6-a8ae-1e87f463229c
json: https://whiteintel.dev/api/public/dossier/c8dca067-b28a-4df6-a8ae-1e87f463229c
identifier: psc:wrKFBGUa2PAfy8sO-kP8gLRM-IM
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# Mr David Leigh Mason

**Type:** Person  
**Jurisdiction:** GB  
**Identifier:** `psc:wrKFBGUa2PAfy8sO-kP8gLRM-IM`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/c8dca067-b28a-4df6-a8ae-1e87f463229c  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/c8dca067-b28a-4df6-a8ae-1e87f463229c  

## Ownership & control

### Holdings / subsidiaries

- **GREENSTEP TRADING LIMITED** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/2c6faa32-2141-5078-a6a1-3ed9f03fc6c3

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Mr David Leigh Mason**. Human view: https://whiteintel.dev/entity/c8dca067-b28a-4df6-a8ae-1e87f463229c · Structured JSON: https://whiteintel.dev/api/public/dossier/c8dca067-b28a-4df6-a8ae-1e87f463229c._

_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"._