---
title: "PORTMAN POWER LIMITED — Ownership Dossier"
canonical: https://whiteintel.dev/entity/f8bc5386-6159-5a2c-b17e-603bcbcf7198
json: https://whiteintel.dev/api/public/dossier/f8bc5386-6159-5a2c-b17e-603bcbcf7198
identifier: oo:GB-COH-09452707
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# PORTMAN POWER LIMITED

**Type:** Company  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `oo:GB-COH-09452707`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/f8bc5386-6159-5a2c-b17e-603bcbcf7198  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/f8bc5386-6159-5a2c-b17e-603bcbcf7198  

## Ownership & control

### Owners / controllers

- **PLUTUS POWERGEN PLC** (beneficial owner) — 50% — https://whiteintel.dev/entity/61619eab-4d23-552f-b8d0-f6e398cd7931
- **ROCKPOOL INVESTMENT NOMINEE LIMITED** (beneficial owner) — 75% — https://whiteintel.dev/entity/e9bdb90c-6986-5534-8a01-8fae184c10ed
- **Plutus Powergen Plc** (beneficial owner) — https://whiteintel.dev/entity/79996720-d019-4c64-b922-b4a7b6189ea5
- **ROCKPOOL INVESTMENT NOMINEE LIMITED** (beneficial owner) — https://whiteintel.dev/entity/e9bdb90c-6986-5534-8a01-8fae184c10ed

### Holdings / subsidiaries

- **WHITEWALL POWER LIMITED** (beneficial owner) — 50% — https://whiteintel.dev/entity/ada6b90c-e5cc-595f-b388-dfcdc9290a1c
- **WHITEWALL POWER LIMITED** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/ada6b90c-e5cc-595f-b388-dfcdc9290a1c

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

A **8-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:** `09452707`
- **Status:** active
- **Type:** ltd
- **Incorporated:** 2015-02-23
- **Registered office:** 27/28 Eastcastle Street, London, W1W 8DH, United Kingdom
- **SIC:** 82990

### Officers

- COLLINSON, Arun Bobby — director · British · appointed 2022-01-25
- MARSHALL, Alan Paul — director · British · appointed 2015-12-10
- CORNWALL, Nigel Paul, Mr  — director · British · appointed 2022-01-25 · resigned 2023-01-09
- GREEN, Andrew Edward — director · British · appointed 2015-02-23 · resigned 2015-12-10
- LAZAREVIC, Paul — director · British · appointed 2023-05-16 · resigned 2023-11-10

### Beneficial owners (Persons with Significant Control)

- [Plutus Powergen Plc](https://whiteintel.dev/entity/79996720-d019-4c64-b922-b4a7b6189ea5) — 25–50% votes · corporate PSC · United Kingdom — since 2016-04-06
- [Rockpool Investment Nominee Limited ](https://whiteintel.dev/entity/e9bdb90c-6986-5534-8a01-8fae184c10ed) — 50–75% votes · corporate PSC · United Kingdom — ceased 2016-04-06

## Provenance

- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/09452707
- companies_house_bulk — https://find-and-update.company-information.service.gov.uk/company/09452707

## 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 **PORTMAN POWER LIMITED** — https://whiteintel.dev/entity/f8bc5386-6159-5a2c-b17e-603bcbcf7198 · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **PORTMAN POWER LIMITED**. Human view: https://whiteintel.dev/entity/f8bc5386-6159-5a2c-b17e-603bcbcf7198 · Structured JSON: https://whiteintel.dev/api/public/dossier/f8bc5386-6159-5a2c-b17e-603bcbcf7198._

_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"._