---
title: "THAMES MATERIALS LIMITED — Ownership Dossier"
canonical: https://whiteintel.dev/entity/3fe11543-b69c-50c9-be46-fe77ddab7e1f
json: https://whiteintel.dev/api/public/dossier/3fe11543-b69c-50c9-be46-fe77ddab7e1f
identifier: oo:GB-COH-03045533
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# THAMES MATERIALS LIMITED

**Type:** Company  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `oo:GB-COH-03045533`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/3fe11543-b69c-50c9-be46-fe77ddab7e1f  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/3fe11543-b69c-50c9-be46-fe77ddab7e1f  

## Ownership & control

### Owners / controllers

- **Mr Martin Owen Clarke** (beneficial owner) — https://whiteintel.dev/entity/a34e4a8f-7a7d-5750-afb7-94af7d1d44b0
- **THAMES MATERIALS HOLDINGS LIMITED** (beneficial owner) — 100% — https://whiteintel.dev/entity/02e320c4-35e7-5352-b18a-7590828696e2
- **Mr Martin Owen Clarke** (beneficial owner) — https://whiteintel.dev/entity/cf147712-1f03-4a29-87dc-faec591ee784
- **THAMES MATERIALS HOLDINGS LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/02e320c4-35e7-5352-b18a-7590828696e2

### 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:** `03045533`
- **Status:** active
- **Type:** ltd
- **Incorporated:** 1995-04-12
- **Registered office:** Bardon Hill, Bardon Road, Coalville, Leicestershire, LE67 1TL, England
- **SIC:** 49410

### Officers

- KAULULE, Kaziwe Siame — director · Zambian · appointed 2025-11-25
- LYONS, Garrath — director · British · appointed 2025-11-25
- CLARKE, Martin — secretary · Irish · appointed 1996-11-14 · resigned 2002-06-12
- CLARKE, Sonia — secretary · British · appointed 2002-06-12 · resigned 2025-11-25
- HENNESSY, Martina — secretary · Irish · appointed 1995-04-12 · resigned 1996-11-14
- HALLMARK SECRETARIES LIMITED — corporate nominee secretary · appointed 1995-04-12 · resigned 1995-04-12
- BYRNE, John — director · Irish · appointed 1995-10-08 · resigned 2003-06-12
- CLARKE, Martin Owen — director · Irish · appointed 1996-11-14 · resigned 2025-11-25
- CLERKIN, Martin — director · Irish · appointed 1995-04-12 · resigned 1995-10-08
- CROPPER, Rory Yhani Charles — director · British · appointed 1998-12-15 · resigned 1999-02-20
- HALLMARK REGISTRARS LIMITED — corporate nominee director · appointed 1995-04-12 · resigned 1995-04-12

### Beneficial owners (Persons with Significant Control)

- [Thames Materials Holdings Limited](https://whiteintel.dev/entity/02e320c4-35e7-5352-b18a-7590828696e2) — 75–100% shares · corporate PSC · England — since 2016-04-06
- Mr Martin Owen Clarke — significant influence or control · individual PSC · England — ceased 2025-11-25

## Provenance

- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/03045533
- companies_house_bulk — https://find-and-update.company-information.service.gov.uk/company/03045533

## 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 **THAMES MATERIALS LIMITED** — https://whiteintel.dev/entity/3fe11543-b69c-50c9-be46-fe77ddab7e1f · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **THAMES MATERIALS LIMITED**. Human view: https://whiteintel.dev/entity/3fe11543-b69c-50c9-be46-fe77ddab7e1f · Structured JSON: https://whiteintel.dev/api/public/dossier/3fe11543-b69c-50c9-be46-fe77ddab7e1f._

_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"._