---
title: "Mr John Mason Clark — Ownership Dossier"
canonical: https://whiteintel.dev/entity/962fe2a0-409f-46d6-bdcb-c5e6cfbd7184
json: https://whiteintel.dev/api/public/dossier/962fe2a0-409f-46d6-bdcb-c5e6cfbd7184
identifier: psc:qOqyCViNgWCsxjl7tcOwc_JVyhg
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# Mr John Mason Clark

**Type:** Person  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `psc:qOqyCViNgWCsxjl7tcOwc_JVyhg`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/962fe2a0-409f-46d6-bdcb-c5e6cfbd7184  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/962fe2a0-409f-46d6-bdcb-c5e6cfbd7184  

## Ownership & control

### Holdings / subsidiaries

- **MASON CLARK HOLDINGS LIMITED** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/7ae54fe2-ccda-5233-a402-ba9cbb97ce7c

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Mr John Mason Clark**. Human view: https://whiteintel.dev/entity/962fe2a0-409f-46d6-bdcb-c5e6cfbd7184 · Structured JSON: https://whiteintel.dev/api/public/dossier/962fe2a0-409f-46d6-bdcb-c5e6cfbd7184._

_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"._