---
title: "Mr William Mason, Jnr — Ownership Dossier"
canonical: https://whiteintel.dev/entity/3de7b9bb-0ccd-4a18-9b9a-fbfe66b963ba
json: https://whiteintel.dev/api/public/dossier/3de7b9bb-0ccd-4a18-9b9a-fbfe66b963ba
identifier: psc:bWlyr39IHavzvl7x0zFxy8o0_qg
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# Mr William Mason, Jnr

**Type:** Person  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `psc:bWlyr39IHavzvl7x0zFxy8o0_qg`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/3de7b9bb-0ccd-4a18-9b9a-fbfe66b963ba  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/3de7b9bb-0ccd-4a18-9b9a-fbfe66b963ba  

## Ownership & control

### Holdings / subsidiaries

- **WILLIAM JAMES LEISURE LIMITED** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/6dbb962e-347d-5075-9ef7-52528f88a210

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Mr William Mason, Jnr**. Human view: https://whiteintel.dev/entity/3de7b9bb-0ccd-4a18-9b9a-fbfe66b963ba · Structured JSON: https://whiteintel.dev/api/public/dossier/3de7b9bb-0ccd-4a18-9b9a-fbfe66b963ba._

_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"._