---
title: "M J WORKS LTD — Ownership Dossier"
canonical: https://whiteintel.dev/entity/2ca6d17e-3bb4-5ce8-8dde-eaba7af2aaec
json: https://whiteintel.dev/api/public/dossier/2ca6d17e-3bb4-5ce8-8dde-eaba7af2aaec
identifier: oo:GB-COH-09760316
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# M J WORKS LTD

**Type:** Company  
**Jurisdiction:** GB  
**Identifier:** `oo:GB-COH-09760316`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/2ca6d17e-3bb4-5ce8-8dde-eaba7af2aaec  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/2ca6d17e-3bb4-5ce8-8dde-eaba7af2aaec  

## Ownership & control

### Owners / controllers

- **Miss Joanne Marion Castello** (beneficial owner) — 100% — https://whiteintel.dev/entity/0597dfa4-e816-58a8-a10f-90a560f6d942
- **Miss Joanne Marion Castello** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/cbb60c92-98d8-4763-9d70-d637be8f2700

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

1. **Miss Joanne Marion Castello** — beneficial owner 100% → *M J WORKS LTD*
1. **Miss Joanne Marion Castello** — beneficial owner 87.5% → *M J WORKS LTD*

## Company profile (live · UK Companies House)

- **Company number:** `09760316`
- **Status:** active
- **Type:** ltd
- **Incorporated:** 2015-09-03
- **Registered office:** Suite-202, Oceanair House, 750-760 High Road, Leytonstone, E11 3AW, United Kingdom
- **SIC:** 85590

## Financials (Companies House accounts)

| Figure | 2025-09-30 | 2024-09-30 |
|---|---:|---:|
| Net assets | £30,640 | £42,798 |
| Shareholder funds | £30,640 | £42,798 |
| Fixed assets | £1,605 | £1,605 |
| Current assets | £26,014 | £47,655 |
| Employees | 1 | 1 |

_As filed at Companies House. Micro-entities file no profit-and-loss account._

### Officers

- CASTELLO, Joanne Marion — director · British · appointed 2015-09-03

### Beneficial owners (Persons with Significant Control)

- Miss Joanne Marion Castello — 75–100% shares · individual PSC · United Kingdom — since 2016-04-06

## Provenance

- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/09760316
- companies_house_accounts — https://find-and-update.company-information.service.gov.uk/company/09760316/filing-history
- companies_house_bulk — https://find-and-update.company-information.service.gov.uk/company/09760316

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **M J WORKS LTD**. Human view: https://whiteintel.dev/entity/2ca6d17e-3bb4-5ce8-8dde-eaba7af2aaec · Structured JSON: https://whiteintel.dev/api/public/dossier/2ca6d17e-3bb4-5ce8-8dde-eaba7af2aaec._

_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"._