---
title: "DIAMOND TRANSMISSION PARTNERS HORNSEA ONE (HOLDINGS) LIMITED — Ownership Dossier"
canonical: https://whiteintel.dev/entity/b2086cfe-22a1-567b-919f-3fc53c1e4c71
json: https://whiteintel.dev/api/public/dossier/b2086cfe-22a1-567b-919f-3fc53c1e4c71
identifier: oo:GB-COH-12005698
risk: Low
source: WhiteIntel corporate-ownership graph
---

# DIAMOND TRANSMISSION PARTNERS HORNSEA ONE (HOLDINGS) LIMITED

**Type:** Company  
**Identifier:** `oo:GB-COH-12005698`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/b2086cfe-22a1-567b-919f-3fc53c1e4c71  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/b2086cfe-22a1-567b-919f-3fc53c1e4c71  

## Ownership & control

### Owners / controllers

- **DIAMOND TRANSMISSION CORPORATION LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/9eda51a6-8e50-5b68-9ecd-1a892809d3f3
- **Chubu Electric Power Company Netherlands B.V.** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/346eb993-70b0-4d5e-934c-fc1c5ca93a51
- **MHC INFRASTRUCTURE UK LIMITED** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/ae617703-b325-593b-902a-8f05e887aad1
- **Chubu Global Investment B.V.** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/752ad31a-d37f-40f6-847e-db902ea30ced

### Holdings / subsidiaries

- **DIAMOND TRANSMISSION PARTNERS HORNSEA ONE LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/e89a00e7-7f93-5627-9cd0-7162b7f898e5

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

A **13-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.

## Exposure (derived from the ownership graph)

**1** owner upstream in this entity's ownership/control chain is flagged — a sanctions hit or a secrecy jurisdiction — an investigative lead by resolved identity, not a legal determination. The contributing parties and the hop-by-hop path unlock with a paid API key or a one-off dossier — https://whiteintel.dev/pricing.

## Provenance

- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/12005698
- companies_house_bulk — https://find-and-update.company-information.service.gov.uk/company/12005698

## Get the full, resolved dossier (agent-callable)

The above is the free teaser. The resolved **multi-hop UBO chain**, ownership **%**, full **financial history**, itemised **assets** and the hop-by-hop **exposure path** are the paid depth — callable as tools from your agent:

```bash
npx -y @whiteintel/mcp-server   # then: get_dossier · trace_ownership_path · check_offshore_exposure
```

Or unlock a one-off cited dossier for **DIAMOND TRANSMISSION PARTNERS HORNSEA ONE (HOLDINGS) LIMITED** — https://whiteintel.dev/entity/b2086cfe-22a1-567b-919f-3fc53c1e4c71 · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **DIAMOND TRANSMISSION PARTNERS HORNSEA ONE (HOLDINGS) LIMITED**. Human view: https://whiteintel.dev/entity/b2086cfe-22a1-567b-919f-3fc53c1e4c71 · Structured JSON: https://whiteintel.dev/api/public/dossier/b2086cfe-22a1-567b-919f-3fc53c1e4c71._

_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"._