---
title: "Siobhan Cook — Ownership Dossier"
canonical: https://whiteintel.dev/entity/72b4d642-ce6f-545f-8dca-ff3e67f7b25a
json: https://whiteintel.dev/api/public/dossier/72b4d642-ce6f-545f-8dca-ff3e67f7b25a
identifier: oo-person:GB-COH-PER-13018122-DkoD7Q5bqOw1l-ZZmAiwK5VJwwI
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# Siobhan Cook

**Type:** Person  
**Jurisdiction:** GB  
**Identifier:** `oo-person:GB-COH-PER-13018122-DkoD7Q5bqOw1l-ZZmAiwK5VJwwI`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/72b4d642-ce6f-545f-8dca-ff3e67f7b25a  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/72b4d642-ce6f-545f-8dca-ff3e67f7b25a  

## Ownership & control

### Holdings / subsidiaries

- **GRILMIRE LTD** (beneficial owner) — 100% — https://whiteintel.dev/entity/bf27a258-cd67-5e13-a1f2-2146f68c3d8d

## Provenance

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

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Siobhan Cook**. Human view: https://whiteintel.dev/entity/72b4d642-ce6f-545f-8dca-ff3e67f7b25a · Structured JSON: https://whiteintel.dev/api/public/dossier/72b4d642-ce6f-545f-8dca-ff3e67f7b25a._

_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"._