---
title: "Mr Mark Graham Jefferies — Ownership Dossier"
canonical: https://whiteintel.dev/entity/cd6960ab-5495-5d91-953f-d1fcd84694d0
json: https://whiteintel.dev/api/public/dossier/cd6960ab-5495-5d91-953f-d1fcd84694d0
identifier: oo-person:GB-COH-PER-02953874-bds5wMPLoAfOL3N6b2oaVYGjYnU
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# Mr Mark Graham Jefferies

**Type:** Person  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `oo-person:GB-COH-PER-02953874-bds5wMPLoAfOL3N6b2oaVYGjYnU`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/cd6960ab-5495-5d91-953f-d1fcd84694d0  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/cd6960ab-5495-5d91-953f-d1fcd84694d0  

## Ownership & control

### Holdings / subsidiaries

- **YAK UK LIMITED** (beneficial owner) — 50% — https://whiteintel.dev/entity/75c7c28f-6dc0-5d50-84a9-7d69e9422311

## Provenance

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

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Mr Mark Graham Jefferies**. Human view: https://whiteintel.dev/entity/cd6960ab-5495-5d91-953f-d1fcd84694d0 · Structured JSON: https://whiteintel.dev/api/public/dossier/cd6960ab-5495-5d91-953f-d1fcd84694d0._

_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"._