---
title: "MJN BUILDING CONTRACTORS LIMITED — Ownership Dossier"
canonical: https://whiteintel.dev/entity/d668728a-d87f-574c-ae7e-e883c02da5a7
json: https://whiteintel.dev/api/public/dossier/d668728a-d87f-574c-ae7e-e883c02da5a7
identifier: oo:GB-COH-09846356
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# MJN BUILDING CONTRACTORS LIMITED

**Type:** Company  
**Jurisdiction:** GB  
**Identifier:** `oo:GB-COH-09846356`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/d668728a-d87f-574c-ae7e-e883c02da5a7  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/d668728a-d87f-574c-ae7e-e883c02da5a7  

## Ownership & control

### Owners / controllers

- **Mr Jonathan Keogh** (beneficial owner) — https://whiteintel.dev/entity/77feb108-b0d4-5b2a-9dfb-cf29ff99b461
- **MJN GROUP HOLDINGS LTD** (beneficial owner) — 100% — https://whiteintel.dev/entity/a43183bb-909a-5d38-81f4-6d5267b55496
- **Mr Jonathan Keogh** (beneficial owner) — https://whiteintel.dev/entity/a1c521b4-fa3a-409c-a5e7-7bc888f70aa6

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

1. **Mr Jonathan Keogh** — beneficial owner → *MJN BUILDING CONTRACTORS LIMITED*
1. **MJN GROUP HOLDINGS LTD** — beneficial owner 100% → *MJN BUILDING CONTRACTORS LIMITED*
1. **Mr Jonathan Keogh** — beneficial owner → *MJN BUILDING CONTRACTORS LIMITED*
2. **Mr Michael Sean Keogh** — beneficial owner 50% → *MJN GROUP HOLDINGS LTD*
2. **Miss Roisin Louise Keogh** — beneficial owner 50% → *MJN GROUP HOLDINGS LTD*
2. **Mr Jonathan Patrick Keogh** — beneficial owner 50% → *MJN GROUP HOLDINGS LTD*

## Company profile (live · UK Companies House)

- **Company number:** `09846356`
- **Status:** dissolved
- **Type:** ltd
- **Incorporated:** 2015-10-28
- **Registered office:** The Lindens Tysswg Lane, Rhymney, Tredegar, NP22 5BJ, Wales
- **SIC:** 43120

### Officers

- KEOGH, Roisin — secretary · appointed 2018-12-01
- KEOGH, Jonathan — director · British · appointed 2015-10-28
- KEOGH, Michael Sean — director · Welsh · appointed 2025-02-17
- KEOGH, Roisin Louise — director · British · appointed 2025-02-17
- KEOGH, Michael — director · British · appointed 2015-10-28 · resigned 2016-05-29
- KEOGH, Nathan — director · British · appointed 2015-10-28 · resigned 2018-10-23

### Beneficial owners (Persons with Significant Control)

- [Mjn Group Holdings Ltd](https://whiteintel.dev/entity/a43183bb-909a-5d38-81f4-6d5267b55496) — 75–100% shares · corporate PSC · Wales — since 2025-02-17
- Mr Jonathan Keogh — significant influence or control · individual PSC · Wales — ceased 2025-02-17

## Provenance

- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/09846356

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **MJN BUILDING CONTRACTORS LIMITED**. Human view: https://whiteintel.dev/entity/d668728a-d87f-574c-ae7e-e883c02da5a7 · Structured JSON: https://whiteintel.dev/api/public/dossier/d668728a-d87f-574c-ae7e-e883c02da5a7._

_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"._