---
title: "Mr John Howard Mason — Ownership Dossier"
canonical: https://whiteintel.dev/entity/620bdba5-d800-496b-ab54-1e43053bacd5
json: https://whiteintel.dev/api/public/dossier/620bdba5-d800-496b-ab54-1e43053bacd5
identifier: psc:A4_nJHFNgyuP13VAI0rspnt7pK8
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# Mr John Howard Mason

**Type:** Person  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `psc:A4_nJHFNgyuP13VAI0rspnt7pK8`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/620bdba5-d800-496b-ab54-1e43053bacd5  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/620bdba5-d800-496b-ab54-1e43053bacd5  

## Ownership & control

### Holdings / subsidiaries

- **OLIVE HOUSE HOLDINGS LIMITED** (beneficial owner) — https://whiteintel.dev/entity/5da29538-e27e-55e2-bee7-ab97f9e79f97

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Mr John Howard Mason**. Human view: https://whiteintel.dev/entity/620bdba5-d800-496b-ab54-1e43053bacd5 · Structured JSON: https://whiteintel.dev/api/public/dossier/620bdba5-d800-496b-ab54-1e43053bacd5._

_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"._