---
title: "Mr Leslie Jonathan Sieff — Ownership Dossier"
canonical: https://whiteintel.dev/entity/07d5dd22-67a6-4c8a-8334-d9eb74cdf7e5
json: https://whiteintel.dev/api/public/dossier/07d5dd22-67a6-4c8a-8334-d9eb74cdf7e5
identifier: psc:GrpPmbZGOEWRzsZR_W8u_jJ4e1Q
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# Mr Leslie Jonathan Sieff

**Type:** Person  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `psc:GrpPmbZGOEWRzsZR_W8u_jJ4e1Q`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/07d5dd22-67a6-4c8a-8334-d9eb74cdf7e5  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/07d5dd22-67a6-4c8a-8334-d9eb74cdf7e5  

## Ownership & control

### Holdings / subsidiaries

- **J.W. PIKE LIMITED** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/08a863b3-c727-5848-9eea-42653be70798

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Mr Leslie Jonathan Sieff**. Human view: https://whiteintel.dev/entity/07d5dd22-67a6-4c8a-8334-d9eb74cdf7e5 · Structured JSON: https://whiteintel.dev/api/public/dossier/07d5dd22-67a6-4c8a-8334-d9eb74cdf7e5._

_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"._