---
title: "PORTMAN HOUSE LIMITED — Ownership Dossier"
canonical: https://whiteintel.dev/entity/aff73464-e386-59ab-9f61-353f2fd6a630
json: https://whiteintel.dev/api/public/dossier/aff73464-e386-59ab-9f61-353f2fd6a630
identifier: oo:GB-COH-07718151
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# PORTMAN HOUSE LIMITED

**Type:** Company  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `oo:GB-COH-07718151`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/aff73464-e386-59ab-9f61-353f2fd6a630  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/aff73464-e386-59ab-9f61-353f2fd6a630  

## Ownership & control

### Owners / controllers

- **Mr Ali Al Shra** (beneficial owner) — https://whiteintel.dev/entity/0d6c8340-fadb-5160-97e5-d33679e3fc92
- **Marta Mariani** (beneficial owner) — 100% — https://whiteintel.dev/entity/5de8dfbb-5d81-5b14-9d8a-be79bbb94801
- **Mr Ali Al Shra** (beneficial owner) — https://whiteintel.dev/entity/94761d35-ee40-4a07-99db-e1abddb24cb8
- **Marta Mariani** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/4ed2c6e3-0cf8-4b9d-9493-bf138b96930d

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

A **4-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 (live · UK Companies House)

- **Company number:** `07718151`
- **Status:** active
- **Type:** ltd
- **Incorporated:** 2011-07-26
- **Registered office:** 26 Hans Road, London, SW3 1RW, England
- **SIC:** 68320

### Officers

- MARIANI, Marta — director · British · appointed 2017-05-01
- AL SHRA, Ali — director · British · appointed 2015-05-11 · resigned 2018-03-07
- MANSOURI, Kevin — director · Uk · appointed 2011-07-26 · resigned 2011-08-23
- RADBERG, Mark Jeffrey — director · British · appointed 2011-08-11 · resigned 2016-02-02

### Beneficial owners (Persons with Significant Control)

- Marta Mariani — 75–100% shares · individual PSC · England — since 2017-05-01
- Mr Ali Al Shra — significant influence or control · individual PSC · England — ceased 2017-05-01

## Provenance

- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/07718151
- companies_house_bulk — https://find-and-update.company-information.service.gov.uk/company/07718151

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **PORTMAN HOUSE LIMITED**. Human view: https://whiteintel.dev/entity/aff73464-e386-59ab-9f61-353f2fd6a630 · Structured JSON: https://whiteintel.dev/api/public/dossier/aff73464-e386-59ab-9f61-353f2fd6a630._

_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"._