---
title: "HARTT PERFORMANCE LTD — Ownership Dossier"
canonical: https://whiteintel.dev/entity/175c5a57-d57a-57ac-bf30-7935a00514f7
json: https://whiteintel.dev/api/public/dossier/175c5a57-d57a-57ac-bf30-7935a00514f7
identifier: oo:GB-COH-09197231
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# HARTT PERFORMANCE LTD

**Type:** Company  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `oo:GB-COH-09197231`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/175c5a57-d57a-57ac-bf30-7935a00514f7  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/175c5a57-d57a-57ac-bf30-7935a00514f7  

## Ownership & control

### Owners / controllers

- **Mr Marcin Jozef Pietrek** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/22483177-5d7c-4a1b-97ac-d8f206d63ac6

### 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 (live · UK Companies House)

- **Company number:** `09197231`
- **Status:** active
- **Type:** ltd
- **Incorporated:** 2014-09-01
- **Registered office:** 1 Diamond Road, Slough, Berkshire, SL1 1RT
- **SIC:** 71129

## Financials (Companies House accounts)

| Figure | 2025-09-30 |
|---|---:|
| Net assets | £69,643 |
| Shareholder funds | £69,643 |
| Fixed assets | £7,000 |
| Current assets | £69,158 |
| Employees | 1 |

_Latest filed period. Full 2-year history unlocks with a paid dossier — https://whiteintel.dev/pricing. As filed at Companies House._

### Officers

- PIETREK, Marcin Jozef — director · Polish · appointed 2014-09-01

### Beneficial owners (Persons with Significant Control)

- Mr Marcin Jozef Pietrek — 75–100% shares · individual PSC — since 2016-07-01

## Provenance

- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/09197231
- companies_house_accounts — https://find-and-update.company-information.service.gov.uk/company/09197231/filing-history
- companies_house_bulk — https://find-and-update.company-information.service.gov.uk/company/09197231

## 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 **HARTT PERFORMANCE LTD** — https://whiteintel.dev/entity/175c5a57-d57a-57ac-bf30-7935a00514f7 · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **HARTT PERFORMANCE LTD**. Human view: https://whiteintel.dev/entity/175c5a57-d57a-57ac-bf30-7935a00514f7 · Structured JSON: https://whiteintel.dev/api/public/dossier/175c5a57-d57a-57ac-bf30-7935a00514f7._

_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"._