---
title: "Mrs Joanna Efford — Ownership Dossier"
canonical: https://whiteintel.dev/entity/f2380dcf-e652-50d6-8703-4183dce86af1
json: https://whiteintel.dev/api/public/dossier/f2380dcf-e652-50d6-8703-4183dce86af1
identifier: oo-person:GB-COH-PER-OC442816-FTJzDPBtQspVSqI6DN5tdiU6vGs
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# Mrs Joanna Efford

**Type:** Person  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `oo-person:GB-COH-PER-OC442816-FTJzDPBtQspVSqI6DN5tdiU6vGs`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/f2380dcf-e652-50d6-8703-4183dce86af1  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/f2380dcf-e652-50d6-8703-4183dce86af1  

## Ownership & control

### Holdings / subsidiaries

- **CHISWICK SECURITY LLP** (beneficial owner) — 50% — https://whiteintel.dev/entity/eb679815-e557-5616-b151-1642860ba583

## Provenance

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

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Mrs Joanna Efford**. Human view: https://whiteintel.dev/entity/f2380dcf-e652-50d6-8703-4183dce86af1 · Structured JSON: https://whiteintel.dev/api/public/dossier/f2380dcf-e652-50d6-8703-4183dce86af1._

_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"._