---
title: "Mrs Heather Catherine Diamond — Ownership Dossier"
canonical: https://whiteintel.dev/entity/1dcb7c8e-7d0b-5f72-98fc-ecc1a82fd23b
json: https://whiteintel.dev/api/public/dossier/1dcb7c8e-7d0b-5f72-98fc-ecc1a82fd23b
identifier: oo-person:GB-COH-PER-10111787-tDEEznfhuaO3rBOajIl44EaSNBM
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# Mrs Heather Catherine Diamond

**Type:** Person  
**Jurisdiction:** GB  
**Identifier:** `oo-person:GB-COH-PER-10111787-tDEEznfhuaO3rBOajIl44EaSNBM`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/1dcb7c8e-7d0b-5f72-98fc-ecc1a82fd23b  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/1dcb7c8e-7d0b-5f72-98fc-ecc1a82fd23b  

## Ownership & control

### Holdings / subsidiaries

- **BLACK DIAMOND DRILLING SERVICES LIMITED** (beneficial owner) — 50% — https://whiteintel.dev/entity/50e77d09-9130-5c3a-8f65-fc28325668af

## Provenance

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

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Mrs Heather Catherine Diamond**. Human view: https://whiteintel.dev/entity/1dcb7c8e-7d0b-5f72-98fc-ecc1a82fd23b · Structured JSON: https://whiteintel.dev/api/public/dossier/1dcb7c8e-7d0b-5f72-98fc-ecc1a82fd23b._

_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"._