---
title: "Mr David Howard Sidwell — Ownership Dossier"
canonical: https://whiteintel.dev/entity/dc0bbade-5f9b-4936-a5cc-af7afa02aa5c
json: https://whiteintel.dev/api/public/dossier/dc0bbade-5f9b-4936-a5cc-af7afa02aa5c
identifier: psc:BLQgwCq3VnZUDzFb1M59nBGiF4M
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# Mr David Howard Sidwell

**Type:** Person  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `psc:BLQgwCq3VnZUDzFb1M59nBGiF4M`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/dc0bbade-5f9b-4936-a5cc-af7afa02aa5c  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/dc0bbade-5f9b-4936-a5cc-af7afa02aa5c  

## Ownership & control

### Holdings / subsidiaries

- **QUADRANGLE ONE LIMITED** (beneficial owner) — 62.5% — https://whiteintel.dev/entity/f403d478-4915-5297-abdb-b01842c34208

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Mr David Howard Sidwell**. Human view: https://whiteintel.dev/entity/dc0bbade-5f9b-4936-a5cc-af7afa02aa5c · Structured JSON: https://whiteintel.dev/api/public/dossier/dc0bbade-5f9b-4936-a5cc-af7afa02aa5c._

_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"._