---
title: "Landmark Mortgage Securities No.3 Holdings Limited — Ownership Dossier"
canonical: https://whiteintel.dev/entity/3bf3eaf3-45cd-4a55-a7c4-387fb3995045
json: https://whiteintel.dev/api/public/dossier/3bf3eaf3-45cd-4a55-a7c4-387fb3995045
identifier: gb-coh:6309557
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# Landmark Mortgage Securities No.3 Holdings Limited

**Type:** Company  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `gb-coh:6309557`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/3bf3eaf3-45cd-4a55-a7c4-387fb3995045  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/3bf3eaf3-45cd-4a55-a7c4-387fb3995045  

## Cross-source identity

The same real-world entity, resolved across sources:

- **LANDMARK MORTGAGE SECURITIES NO.3 HOLDINGS LIMITED** — companies_house_bulk · `oo:GB-COH-06309557` — https://whiteintel.dev/entity/74af9854-6b45-5298-9894-fc38c9917f7a

## Ownership & control

### Holdings / subsidiaries

- **LANDMARK MORTGAGE SECURITIES NO.3 OPTIONS LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/1ee651f5-c925-5cd2-b16e-845069385ad1
- **LANDMARK MORTGAGE SECURITIES NO.3 PLC** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/a61e381b-f10d-57b0-86ad-7b5faa8c6ca3

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

A **19-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.

## 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 **Landmark Mortgage Securities No.3 Holdings Limited** — https://whiteintel.dev/entity/3bf3eaf3-45cd-4a55-a7c4-387fb3995045 · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Landmark Mortgage Securities No.3 Holdings Limited**. Human view: https://whiteintel.dev/entity/3bf3eaf3-45cd-4a55-a7c4-387fb3995045 · Structured JSON: https://whiteintel.dev/api/public/dossier/3bf3eaf3-45cd-4a55-a7c4-387fb3995045._

_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"._