---
title: "JSFM TAMERTON LIMITED — Ownership Dossier"
canonical: https://whiteintel.dev/entity/68f2240a-c40c-58e1-9b09-dfffeb67abb7
json: https://whiteintel.dev/api/public/dossier/68f2240a-c40c-58e1-9b09-dfffeb67abb7
identifier: oo:GB-COH-01652326
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# JSFM TAMERTON LIMITED

**Type:** Company  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `oo:GB-COH-01652326`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/68f2240a-c40c-58e1-9b09-dfffeb67abb7  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/68f2240a-c40c-58e1-9b09-dfffeb67abb7  

## Ownership & control

### Owners / controllers

- **PLESSEY SEMICONDUCTORS LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/250a655b-0f4a-5322-ba3c-5e670c4c8eb2

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

A **7-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:** `01652326`
- **Status:** active
- **Type:** ltd
- **Incorporated:** 1982-07-19
- **Registered office:** Tamerton Road, Roborough, Plymouth, Devon, PL6 7BQ
- **SIC:** 74990

### Officers

- LUDKIN, Maria — secretary · appointed 2025-08-15
- HAYES, David — director · British · appointed 2025-08-15
- SMITH, Richard Alexander Buchan — director · British · appointed 2025-08-15
- BRIERWOOD, John Frederick — secretary · British · resigned 1994-03-23
- GRIFFITHS, Anthony Kerr — secretary · British · appointed 1994-03-23 · resigned 1998-09-01
- KYLE, Peter — secretary · British · appointed 1998-09-01 · resigned 2002-03-28
- STANTON, Hilary Lesley — secretary · British · appointed 2002-03-18 · resigned 2009-12-31
- ALLCHURCH, Andrew Robert — director · British · appointed 2002-03-28 · resigned 2005-11-02
- BAILEY, Christopher Simon — director · British · appointed 2002-03-28 · resigned 2024-09-11
- BOLD, Brendan Shaun — director · British · appointed 2005-11-02 · resigned 2007-04-20
- CAWSE, David Alan — director · British · appointed 2007-04-20 · resigned 2008-07-09
- CORDEAU, Francois — director · Canadian · appointed 1998-02-12 · resigned 2001-08-03
- DUNN, Douglas John — director · British · resigned 1993-06-30
- GALLAGHER, Anthony Patrick — director · British · resigned 2002-03-28
- JONES, Alan David — director · British · appointed 1998-04-09 · resigned 2001-02-09
- LE GOFF, Michael — director · British · appointed 2009-12-31 · resigned 2018-07-05
- RIEMER, Manfred, Dr — director · German · appointed 2005-11-02 · resigned 2007-04-20
- SILVESTER, Iain Charles — director · British · appointed 2018-07-05 · resigned 2025-08-15
- STRICKLAND, Keith, Dr — director · British · appointed 2024-09-11 · resigned 2025-08-15
- URWIN, Thomas — director · British · appointed 1993-08-02 · resigned 1998-04-09

### Beneficial owners (Persons with Significant Control)

- Mr David Hayes — 50–75% shares · individual PSC — since 2025-08-15
- [Plessey Semiconductors Ltd](https://whiteintel.dev/entity/250a655b-0f4a-5322-ba3c-5e670c4c8eb2) — 75–100% shares · corporate PSC · England — since 2016-04-06

## Provenance

- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/01652326
- companies_house_bulk — https://find-and-update.company-information.service.gov.uk/company/01652326

## 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 **JSFM TAMERTON LIMITED** — https://whiteintel.dev/entity/68f2240a-c40c-58e1-9b09-dfffeb67abb7 · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **JSFM TAMERTON LIMITED**. Human view: https://whiteintel.dev/entity/68f2240a-c40c-58e1-9b09-dfffeb67abb7 · Structured JSON: https://whiteintel.dev/api/public/dossier/68f2240a-c40c-58e1-9b09-dfffeb67abb7._

_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"._