---
title: "Mr Mark Sumner — Ownership Dossier"
canonical: https://whiteintel.dev/entity/81ce404f-e0eb-4519-a52d-c79f33f1b26b
json: https://whiteintel.dev/api/public/dossier/81ce404f-e0eb-4519-a52d-c79f33f1b26b
identifier: psc:1GwNEHKNtYwHuU12q3ZFbz6tziI
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# Mr Mark Sumner

**Type:** Person  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `psc:1GwNEHKNtYwHuU12q3ZFbz6tziI`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/81ce404f-e0eb-4519-a52d-c79f33f1b26b  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/81ce404f-e0eb-4519-a52d-c79f33f1b26b  

## Ownership & control

### Holdings / subsidiaries

- **CHAPEL HILL CONSULTANCY LTD** (beneficial owner) — 62.5% — https://whiteintel.dev/entity/a9b7d36f-bc04-5c74-a6c5-fb5ea7720437

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Mr Mark Sumner**. Human view: https://whiteintel.dev/entity/81ce404f-e0eb-4519-a52d-c79f33f1b26b · Structured JSON: https://whiteintel.dev/api/public/dossier/81ce404f-e0eb-4519-a52d-c79f33f1b26b._

_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"._