---
title: "HSI LTD — Ownership Dossier"
canonical: https://whiteintel.dev/entity/fe905ac5-e1c8-52fc-9636-6e56c7919310
json: https://whiteintel.dev/api/public/dossier/fe905ac5-e1c8-52fc-9636-6e56c7919310
identifier: oo:GB-COH-SC555964
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# HSI LTD

**Type:** Company  
**Jurisdiction:** GB  
**Identifier:** `oo:GB-COH-SC555964`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/fe905ac5-e1c8-52fc-9636-6e56c7919310  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/fe905ac5-e1c8-52fc-9636-6e56c7919310  

## Ownership & control

### Owners / controllers

- **Mr Hubert Siemieniuch** (beneficial owner) — 100% — https://whiteintel.dev/entity/5029cb7d-91b9-5d23-b188-28492c521190
- **Mr Hubert Rafal Siemieniuch** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/59d80f32-d3f8-4d06-b5f2-3177c1e49fa1

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

A **2-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:** `SC555964`
- **Status:** active
- **Type:** ltd
- **Incorporated:** 2017-01-30
- **Registered office:** 8/55 Waterfront Park, Edinburgh, EH5 1BA, Scotland
- **SIC:** 43320

### Officers

- SIEMIENIUCH, Hubert Rafal — director · Polish · appointed 2026-02-18
- SIEMIENIUCH, Hubert — director · Polish · appointed 2017-01-30 · resigned 2026-02-17

### Beneficial owners (Persons with Significant Control)

- Mr Hubert Rafal Siemieniuch — 75–100% shares · individual PSC · Scotland — since 2017-01-30

## Provenance

- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/SC555964
- companies_house_bulk — https://find-and-update.company-information.service.gov.uk/company/SC555964

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **HSI LTD**. Human view: https://whiteintel.dev/entity/fe905ac5-e1c8-52fc-9636-6e56c7919310 · Structured JSON: https://whiteintel.dev/api/public/dossier/fe905ac5-e1c8-52fc-9636-6e56c7919310._

_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"._