---
title: "MASTERSON BREEN LTD — Ownership Dossier"
canonical: https://whiteintel.dev/entity/35dcb5b4-a878-4691-9f9f-bfa01af6fdbf
json: https://whiteintel.dev/api/public/dossier/35dcb5b4-a878-4691-9f9f-bfa01af6fdbf
identifier: gb-coh:17130702
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# MASTERSON BREEN LTD

**Type:** Company  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `gb-coh:17130702`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/35dcb5b4-a878-4691-9f9f-bfa01af6fdbf  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/35dcb5b4-a878-4691-9f9f-bfa01af6fdbf  

## Ownership & control

### Owners / controllers

- **Miss Clare Anne Masterson** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/36387722-b0b3-41d9-a1c8-26850e9c6fed
- **Dorset William Michael Breen** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/98681710-7543-4360-8387-4576d5c7c1ed

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

A **2-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.

## Provenance

- companies_house_bulk — https://find-and-update.company-information.service.gov.uk/company/17130702

## 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 **MASTERSON BREEN LTD** — https://whiteintel.dev/entity/35dcb5b4-a878-4691-9f9f-bfa01af6fdbf · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **MASTERSON BREEN LTD**. Human view: https://whiteintel.dev/entity/35dcb5b4-a878-4691-9f9f-bfa01af6fdbf · Structured JSON: https://whiteintel.dev/api/public/dossier/35dcb5b4-a878-4691-9f9f-bfa01af6fdbf._

_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"._