---
title: "Mr Matthew Ryan Callum — Ownership Dossier"
canonical: https://whiteintel.dev/entity/95cfab24-d159-5fe2-964c-edbf4430bba4
json: https://whiteintel.dev/api/public/dossier/95cfab24-d159-5fe2-964c-edbf4430bba4
identifier: oo-person:GB-COH-PER-14620050-tB_tYv65WpkMxGmcW6DEPgpiwOw
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# Mr Matthew Ryan Callum

**Type:** Person  
**Jurisdiction:** GB  
**Identifier:** `oo-person:GB-COH-PER-14620050-tB_tYv65WpkMxGmcW6DEPgpiwOw`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/95cfab24-d159-5fe2-964c-edbf4430bba4  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/95cfab24-d159-5fe2-964c-edbf4430bba4  

## Ownership & control

### Holdings / subsidiaries

- **THE PLUG PLUMBING AND HEATING LTD** (beneficial owner) — 100% — https://whiteintel.dev/entity/df2bc750-902b-5939-9f54-286903da6243

## Provenance

- OpenOwnership — https://www.openownership.org

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Mr Matthew Ryan Callum**. Human view: https://whiteintel.dev/entity/95cfab24-d159-5fe2-964c-edbf4430bba4 · Structured JSON: https://whiteintel.dev/api/public/dossier/95cfab24-d159-5fe2-964c-edbf4430bba4._

_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"._