---
title: "S.J. MARTIN LIMITED — Ownership Dossier"
canonical: https://whiteintel.dev/entity/7cca4f74-ccdb-5085-9397-07ce83f973a7
json: https://whiteintel.dev/api/public/dossier/7cca4f74-ccdb-5085-9397-07ce83f973a7
identifier: oo:GB-COH-NI001500
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# S.J. MARTIN LIMITED

**Type:** Company  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `oo:GB-COH-NI001500`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/7cca4f74-ccdb-5085-9397-07ce83f973a7  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/7cca4f74-ccdb-5085-9397-07ce83f973a7  

## Ownership & control

### Owners / controllers

- **NORTHSTONE PRODUCTS LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/c7403b0c-8a33-5955-b8d7-37f9a5bb674c

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

A **10-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:** `NI001500`
- **Status:** active
- **Type:** ltd
- **Incorporated:** 1941-07-31
- **Registered office:** 99 Kingsway, Dunmurry, Belfast, Co Antrim, BT17 9NU
- **SIC:** 99999

### Officers

- ADAMSON, Paul — director · British · appointed 2026-01-05
- MCMILLAN, Darren William — director · British · appointed 2026-04-03
- MARTIN, William Gavin — secretary · appointed 1941-07-31 · resigned 2005-09-01
- MCCAMBRIDGE, John — secretary · Irish · appointed 2005-09-01 · resigned 2013-05-13
- DONNAN, Andrew John William — director · British · appointed 2013-05-13 · resigned 2026-04-03
- DOYLE, Joe — director · Irish · appointed 2005-09-01 · resigned 2006-10-28
- GONZALEZ LAU, Roger Martin — director · Nicaragua · appointed 2005-10-28 · resigned 2013-04-08
- KELLY, Brian — director · Irish · appointed 2013-04-08 · resigned 2013-05-13
- MARTIN, Kenneth H. — director · British · appointed 1941-07-31 · resigned 2005-09-01
- MARTIN, W Gavin — director · British · appointed 1941-07-31 · resigned 2005-09-01
- MCCAMBRIDGE, John — director · Irish · appointed 2005-09-01 · resigned 2013-05-13
- MCDERMOTT, Richard Allison — director · British · appointed 2013-05-13 · resigned 2017-03-31
- MCQUILLAN, Graham Alexander Hugh — director · British · appointed 2013-05-13 · resigned 2016-04-05
- O'DONNELL, Derek Michael John — director · Irish · appointed 2013-04-08 · resigned 2013-05-13
- SCOTT, Trevor — director · British · appointed 2005-09-08 · resigned 2006-04-30
- SWEENEY, Edward — director · British · appointed 2013-05-13 · resigned 2020-09-30
- WILSON, John Nathanial — director · British · appointed 2020-09-30 · resigned 2025-12-31

### Beneficial owners (Persons with Significant Control)

- [Northstone Products Limited](https://whiteintel.dev/entity/c7403b0c-8a33-5955-b8d7-37f9a5bb674c) — 75–100% shares · corporate PSC · England — since 2016-04-06

## Provenance

- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/NI001500
- companies_house_bulk — https://find-and-update.company-information.service.gov.uk/company/NI001500

## Get the full, resolved dossier (agent-callable)

The above is the free teaser. The resolved **multi-hop UBO chain**, ownership **%**, full **financial history**, itemised **assets** and the hop-by-hop **exposure path** are the paid depth — callable as tools from your agent:

```bash
npx -y @whiteintel/mcp-server   # then: get_dossier · trace_ownership_path · check_offshore_exposure
```

Or unlock a one-off cited dossier for **S.J. MARTIN LIMITED** — https://whiteintel.dev/entity/7cca4f74-ccdb-5085-9397-07ce83f973a7 · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **S.J. MARTIN LIMITED**. Human view: https://whiteintel.dev/entity/7cca4f74-ccdb-5085-9397-07ce83f973a7 · Structured JSON: https://whiteintel.dev/api/public/dossier/7cca4f74-ccdb-5085-9397-07ce83f973a7._

_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"._