---
title: "SOUTHDOWN ASSOCIATES LIMITED — Ownership Dossier"
canonical: https://whiteintel.dev/entity/dc7a00bf-e9e4-57dd-ba14-5060f9a127ee
json: https://whiteintel.dev/api/public/dossier/dc7a00bf-e9e4-57dd-ba14-5060f9a127ee
identifier: oo:GB-COH-09079378
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# SOUTHDOWN ASSOCIATES LIMITED

**Type:** Company  
**Jurisdiction:** GB  
**Identifier:** `oo:GB-COH-09079378`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/dc7a00bf-e9e4-57dd-ba14-5060f9a127ee  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/dc7a00bf-e9e4-57dd-ba14-5060f9a127ee  

## Ownership & control

### Owners / controllers

- **Mr Colin Graham Woodford** (beneficial owner) — 75% — https://whiteintel.dev/entity/7e254697-a465-5595-b802-2b8e492b31a8
- **Mrs Anne-Marie Catherine Costello** (beneficial owner) — 50% — https://whiteintel.dev/entity/cbaca81a-1762-5e57-953a-638142b73b75
- **Mrs Anne-Marie Catherine Costello** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/f39210ce-b2ac-4517-a92b-f19956616463
- **Mr Colin Woodford** (beneficial owner) — 62.5% — https://whiteintel.dev/entity/77a91d97-c455-409e-906b-cc57e5c90225

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

A **4-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:** `09079378`
- **Status:** active
- **Type:** ltd
- **Incorporated:** 2014-06-10
- **Registered office:** 41 Southdown Road, Harpenden, Hertfordshire, AL5 1PG
- **SIC:** 62020

### Officers

- COSTELLO, Anne-Marie Catherine — director · Irish · appointed 2014-06-10
- WOODFORD, Colin — director · British · appointed 2014-06-20

### Beneficial owners (Persons with Significant Control)

- Mr Colin Woodford — 50–75% shares · individual PSC · England — since 2016-04-06
- Mrs Anne-Marie Catherine Costello — 25–50% shares · individual PSC · England — since 2016-04-06

## Provenance

- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/09079378
- companies_house_bulk — https://find-and-update.company-information.service.gov.uk/company/09079378

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **SOUTHDOWN ASSOCIATES LIMITED**. Human view: https://whiteintel.dev/entity/dc7a00bf-e9e4-57dd-ba14-5060f9a127ee · Structured JSON: https://whiteintel.dev/api/public/dossier/dc7a00bf-e9e4-57dd-ba14-5060f9a127ee._

_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"._