---
title: "Helen Jane Winterburn — Ownership Dossier"
canonical: https://whiteintel.dev/entity/63fa0285-ccdf-5ba4-88fb-9290ef9aa440
json: https://whiteintel.dev/api/public/dossier/63fa0285-ccdf-5ba4-88fb-9290ef9aa440
identifier: oo-person:GB-COH-PER-06347744-XcToAd10tI8Z6U9gkZAAPnYyXzY
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# Helen Jane Winterburn

**Type:** Person  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `oo-person:GB-COH-PER-06347744-XcToAd10tI8Z6U9gkZAAPnYyXzY`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/63fa0285-ccdf-5ba4-88fb-9290ef9aa440  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/63fa0285-ccdf-5ba4-88fb-9290ef9aa440  

## Ownership & control

### Holdings / subsidiaries

- **JHL PRECISION LIMITED** (beneficial owner) — 50% — https://whiteintel.dev/entity/89babcaa-4719-5d92-bf5c-6060238fdb1d

## Provenance

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

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Helen Jane Winterburn**. Human view: https://whiteintel.dev/entity/63fa0285-ccdf-5ba4-88fb-9290ef9aa440 · Structured JSON: https://whiteintel.dev/api/public/dossier/63fa0285-ccdf-5ba4-88fb-9290ef9aa440._

_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"._