---
title: "Mr Mark John Purnell — Ownership Dossier"
canonical: https://whiteintel.dev/entity/5c4e7bef-7f74-577b-8bef-a1bf5f980975
json: https://whiteintel.dev/api/public/dossier/5c4e7bef-7f74-577b-8bef-a1bf5f980975
identifier: oo-person:GB-COH-PER-12741046-pDt5wfAGMYzyh9s8W56d4MwlWqE
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# Mr Mark John Purnell

**Type:** Person  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `oo-person:GB-COH-PER-12741046-pDt5wfAGMYzyh9s8W56d4MwlWqE`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/5c4e7bef-7f74-577b-8bef-a1bf5f980975  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/5c4e7bef-7f74-577b-8bef-a1bf5f980975  

## Ownership & control

### Holdings / subsidiaries

- **BIO-VENT SYSTEMS LIMITED** (beneficial owner) — 50% — https://whiteintel.dev/entity/298f5fa9-1645-525e-aff2-c080d05a2395

## Provenance

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

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Mr Mark John Purnell**. Human view: https://whiteintel.dev/entity/5c4e7bef-7f74-577b-8bef-a1bf5f980975 · Structured JSON: https://whiteintel.dev/api/public/dossier/5c4e7bef-7f74-577b-8bef-a1bf5f980975._

_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"._