---
title: "ETHICAL BUILDING SERVICES LTD — Ownership Dossier"
canonical: https://whiteintel.dev/entity/c8debc8d-8f0d-5240-8cdf-229eab5b60f9
json: https://whiteintel.dev/api/public/dossier/c8debc8d-8f0d-5240-8cdf-229eab5b60f9
identifier: oo:GB-COH-15882307
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# ETHICAL BUILDING SERVICES LTD

**Type:** Company  
**Jurisdiction:** GB  
**Identifier:** `oo:GB-COH-15882307`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/c8debc8d-8f0d-5240-8cdf-229eab5b60f9  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/c8debc8d-8f0d-5240-8cdf-229eab5b60f9  

## Ownership & control

### Owners / controllers

- **Mr Marcin Michal Lesniak** (beneficial owner) — 50% — https://whiteintel.dev/entity/5a892654-968c-501a-bf0a-eadb212f4b09
- **Miss Sandra Hassard** (beneficial owner) — 50% — https://whiteintel.dev/entity/ab20ed99-b7c6-5c1b-a89a-1471efb3585d
- **Mr Marcin Michal Lesniak** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/7e26c58a-3182-4fc9-be46-761628a340be
- **Miss Sandra Hassard** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/a9319b19-74ea-4399-aa86-d004c4f55166

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

1. **Mr Marcin Michal Lesniak** — beneficial owner 50% → *ETHICAL BUILDING SERVICES LTD*
1. **Miss Sandra Hassard** — beneficial owner 50% → *ETHICAL BUILDING SERVICES LTD*
1. **Mr Marcin Michal Lesniak** — beneficial owner 37.5% → *ETHICAL BUILDING SERVICES LTD*
1. **Miss Sandra Hassard** — beneficial owner 37.5% → *ETHICAL BUILDING SERVICES LTD*

## Company profile (live · UK Companies House)

- **Company number:** `15882307`
- **Status:** active
- **Type:** ltd
- **Incorporated:** 2024-08-06
- **Registered office:** Flat 1 95 Avenue Road, London, NW8 6HY, England
- **SIC:** 68100

### Officers

- LESNIAK, Marcin Michal — director · Polish · appointed 2024-08-06
- HASSARD, Sandra — director · British · appointed 2024-08-27 · resigned 2025-08-05

### Beneficial owners (Persons with Significant Control)

- Mr Marcin Michal Lesniak — 75–100% shares · individual PSC · England — since 2024-08-06
- Miss Sandra Hassard — 25–50% shares · individual PSC · England — ceased 2025-08-05

## Provenance

- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/15882307
- companies_house_bulk — https://find-and-update.company-information.service.gov.uk/company/15882307

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **ETHICAL BUILDING SERVICES LTD**. Human view: https://whiteintel.dev/entity/c8debc8d-8f0d-5240-8cdf-229eab5b60f9 · Structured JSON: https://whiteintel.dev/api/public/dossier/c8debc8d-8f0d-5240-8cdf-229eab5b60f9._

_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"._