---
title: "ALTERRA CAPITAL BRAZIL LIMITED — Ownership Dossier"
canonical: https://whiteintel.dev/entity/f593b073-9c9e-5b9d-a5af-b2ebee48303d
json: https://whiteintel.dev/api/public/dossier/f593b073-9c9e-5b9d-a5af-b2ebee48303d
identifier: oo:GB-COH-07343517
risk: Low
source: WhiteIntel corporate-ownership graph
---

# ALTERRA CAPITAL BRAZIL LIMITED

**Type:** Company  
**Identifier:** `oo:GB-COH-07343517`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/f593b073-9c9e-5b9d-a5af-b2ebee48303d  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/f593b073-9c9e-5b9d-a5af-b2ebee48303d  

## Ownership & control

### Owners / controllers

- **Markel Group Inc.** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/a0b9bb0c-96c2-496b-9ea1-51b28fe08035

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

A **1-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.

## Company profile (UK Companies House — WhiteIntel corpus snapshot, not a live lookup)

- **Company number:** `07343517`
- **Status:** Active
- **Type:** Private Limited Company
- **Incorporated:** 2010-08-12
- **Registered office:** 20 FENCHURCH STREET, LONDON, EC3M 3AZ
- **SIC:** 70100 - Activities of head offices

## Provenance

- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/07343517
- companies_house_bulk — https://find-and-update.company-information.service.gov.uk/company/07343517

## 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 **ALTERRA CAPITAL BRAZIL LIMITED** — https://whiteintel.dev/entity/f593b073-9c9e-5b9d-a5af-b2ebee48303d · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **ALTERRA CAPITAL BRAZIL LIMITED**. Human view: https://whiteintel.dev/entity/f593b073-9c9e-5b9d-a5af-b2ebee48303d · Structured JSON: https://whiteintel.dev/api/public/dossier/f593b073-9c9e-5b9d-a5af-b2ebee48303d._

_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"._