---
title: "ENVIRONMENTAL GEOTECHNICS LIMITED — Ownership Dossier"
canonical: https://whiteintel.dev/entity/ec994909-c260-5773-b5c2-eb3a71cbfc1d
json: https://whiteintel.dev/api/public/dossier/ec994909-c260-5773-b5c2-eb3a71cbfc1d
identifier: oo:GB-COH-01653255
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# ENVIRONMENTAL GEOTECHNICS LIMITED

**Type:** Company  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `oo:GB-COH-01653255`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/ec994909-c260-5773-b5c2-eb3a71cbfc1d  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/ec994909-c260-5773-b5c2-eb3a71cbfc1d  

## Ownership & control

### Owners / controllers

- **Dr Stephan Arthur Jefferis** (beneficial owner) — https://whiteintel.dev/entity/6632306b-e692-5b00-acdf-bdfd1e6f8475
- **Mrs Catherine Claude Jefferis** (beneficial owner) — 100% — https://whiteintel.dev/entity/c5f9dd63-9224-5c2c-bd0b-6980f07ed04b
- **Dr Stephan Arthur Jefferis** (beneficial owner) — https://whiteintel.dev/entity/3a0314fb-e89f-4122-9536-a6a490c11fb1
- **Mrs Catherine Claude Jefferis** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/e65ffac4-4c5d-4bda-8352-65253a4fdef1

### UBO chain (walk to the ultimate owner)

A **4-step** ownership/control chain to the ultimate beneficial owner is resolved for this entity. The full cited chain unlocks with a paid API key or a one-off dossier — https://whiteintel.dev/pricing.

## Company profile (live · UK Companies House)

- **Company number:** `01653255`
- **Status:** dissolved
- **Type:** ltd
- **Incorporated:** 1982-07-22
- **Registered office:** 28a Charter House Sandford Street, Lichfield, Staffordshire, WS13 6QA
- **SIC:** 71122, 71129, 82990

### Officers

- JEFFERIS, Catherine Claude — secretary · British
- JEFFERIS, Catherine Claude — director · British · appointed 2016-12-16
- JEFFERIS, Stephan Arthur, Dr — director · British · appointed 1995-12-19
- WHITE, James Kerslake, Professor — director · British · resigned 1995-12-18

### Beneficial owners (Persons with Significant Control)

- Mrs Catherine Claude Jefferis — 75–100% shares · individual PSC · England — since 2016-12-16
- Dr Stephan Arthur Jefferis — right to appoint and remove directors · individual PSC · England — ceased 2018-01-18

## Provenance

- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/01653255

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **ENVIRONMENTAL GEOTECHNICS LIMITED**. Human view: https://whiteintel.dev/entity/ec994909-c260-5773-b5c2-eb3a71cbfc1d · Structured JSON: https://whiteintel.dev/api/public/dossier/ec994909-c260-5773-b5c2-eb3a71cbfc1d._

_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"._