---
title: "John Matthew Campbell — Ownership Dossier"
canonical: https://whiteintel.dev/entity/f33c80ff-8b68-48bb-8316-d42937c50d59
json: https://whiteintel.dev/api/public/dossier/f33c80ff-8b68-48bb-8316-d42937c50d59
identifier: psc:ShpPASBlqvslavdMO3lITgjXgmI
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# John Matthew Campbell

**Type:** Person  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `psc:ShpPASBlqvslavdMO3lITgjXgmI`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/f33c80ff-8b68-48bb-8316-d42937c50d59  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/f33c80ff-8b68-48bb-8316-d42937c50d59  

## Ownership & control

### Holdings / subsidiaries

- **Vertex Carpentry Contractors Limited** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/af04796b-e4a9-50c2-a6be-94d23164f473

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **John Matthew Campbell**. Human view: https://whiteintel.dev/entity/f33c80ff-8b68-48bb-8316-d42937c50d59 · Structured JSON: https://whiteintel.dev/api/public/dossier/f33c80ff-8b68-48bb-8316-d42937c50d59._

_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"._