---
title: "Andrew Mark Williamson — Ownership Dossier"
canonical: https://whiteintel.dev/entity/727718ae-9da2-5eb5-bed3-8efbf4216f4f
json: https://whiteintel.dev/api/public/dossier/727718ae-9da2-5eb5-bed3-8efbf4216f4f
identifier: oo-person:GB-COH-PER-05110183-nau3ygdNYzxkxzhxkykZ0S5gftI
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# Andrew Mark Williamson

**Type:** Person  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `oo-person:GB-COH-PER-05110183-nau3ygdNYzxkxzhxkykZ0S5gftI`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/727718ae-9da2-5eb5-bed3-8efbf4216f4f  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/727718ae-9da2-5eb5-bed3-8efbf4216f4f  

## Ownership & control

### Holdings / subsidiaries

- **R G JONES SOUND ENGINEERING LIMITED** (beneficial owner) — 50% — https://whiteintel.dev/entity/bc0fb4c1-da57-5ccf-9d6a-bba7a1b91387

## Provenance

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

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Andrew Mark Williamson**. Human view: https://whiteintel.dev/entity/727718ae-9da2-5eb5-bed3-8efbf4216f4f · Structured JSON: https://whiteintel.dev/api/public/dossier/727718ae-9da2-5eb5-bed3-8efbf4216f4f._

_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"._