---
title: "Dr Stephan Arthur Jefferis — Ownership Dossier"
canonical: https://whiteintel.dev/entity/6632306b-e692-5b00-acdf-bdfd1e6f8475
json: https://whiteintel.dev/api/public/dossier/6632306b-e692-5b00-acdf-bdfd1e6f8475
identifier: oo-person:GB-COH-PER-01653255-3T-OEI4w8wAQftlhm7KPOvlhc1s
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# Dr Stephan Arthur Jefferis

**Type:** Person  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `oo-person:GB-COH-PER-01653255-3T-OEI4w8wAQftlhm7KPOvlhc1s`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/6632306b-e692-5b00-acdf-bdfd1e6f8475  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/6632306b-e692-5b00-acdf-bdfd1e6f8475  

## Ownership & control

### Holdings / subsidiaries

- **ENVIRONMENTAL GEOTECHNICS LIMITED** (beneficial owner) — https://whiteintel.dev/entity/ec994909-c260-5773-b5c2-eb3a71cbfc1d

## Provenance

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

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Dr Stephan Arthur Jefferis**. Human view: https://whiteintel.dev/entity/6632306b-e692-5b00-acdf-bdfd1e6f8475 · Structured JSON: https://whiteintel.dev/api/public/dossier/6632306b-e692-5b00-acdf-bdfd1e6f8475._

_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"._