---
title: "Mr Mariusz Semeniuk — Ownership Dossier"
canonical: https://whiteintel.dev/entity/67e6ef56-e6b2-4f21-aef0-d9ac87ffcbe9
json: https://whiteintel.dev/api/public/dossier/67e6ef56-e6b2-4f21-aef0-d9ac87ffcbe9
identifier: psc:TJeDCtMErQt4LkkgoO3OSy30sac
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# Mr Mariusz Semeniuk

**Type:** Person  
**Jurisdiction:** GB  
**Identifier:** `psc:TJeDCtMErQt4LkkgoO3OSy30sac`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/67e6ef56-e6b2-4f21-aef0-d9ac87ffcbe9  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/67e6ef56-e6b2-4f21-aef0-d9ac87ffcbe9  

## Ownership & control

### Holdings / subsidiaries

- **J&M BATHROOMS LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/3912d1da-a2fa-52b4-a5d1-2e22c239aa88

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Mr Mariusz Semeniuk**. Human view: https://whiteintel.dev/entity/67e6ef56-e6b2-4f21-aef0-d9ac87ffcbe9 · Structured JSON: https://whiteintel.dev/api/public/dossier/67e6ef56-e6b2-4f21-aef0-d9ac87ffcbe9._

_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"._