---
title: "RUBYKON LIMITED — Ownership Dossier"
canonical: https://whiteintel.dev/entity/be7391fa-e1d0-5f65-ad9e-4728b61a097f
json: https://whiteintel.dev/api/public/dossier/be7391fa-e1d0-5f65-ad9e-4728b61a097f
identifier: oo:GB-COH-04106976
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# RUBYKON LIMITED

**Type:** Company  
**Jurisdiction:** GB  
**Identifier:** `oo:GB-COH-04106976`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/be7391fa-e1d0-5f65-ad9e-4728b61a097f  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/be7391fa-e1d0-5f65-ad9e-4728b61a097f  

## Ownership & control

### Owners / controllers

- **Miss Ruth Danielle Barrett** (beneficial owner) — 50% — https://whiteintel.dev/entity/109495c8-e814-57f3-89b6-a32ca0e4fcc8
- **Mr Ruskin Joseph Williamson** (beneficial owner) — 50% — https://whiteintel.dev/entity/3673830e-91b8-59bf-8c7f-cdb21bfb688e
- **Mr Ruskin Joseph Williamson** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/4f0fb01f-5b76-407a-b733-ef5bcbbf687f
- **Miss Ruth Danielle Barrett** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/42548326-56df-4348-bc77-f2673f5b2977

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

1. **Miss Ruth Danielle Barrett** — beneficial owner 50% → *RUBYKON LIMITED*
1. **Mr Ruskin Joseph Williamson** — beneficial owner 50% → *RUBYKON LIMITED*
1. **Mr Ruskin Joseph Williamson** — beneficial owner 37.5% → *RUBYKON LIMITED*
1. **Miss Ruth Danielle Barrett** — beneficial owner 37.5% → *RUBYKON LIMITED*

## Company profile (live · UK Companies House)

- **Company number:** `04106976`
- **Status:** active
- **Type:** ltd
- **Incorporated:** 2000-11-13
- **Registered office:** 57 Southbrook Road, London, SE12 8LJ, England
- **SIC:** 59200

### Officers

- WILLIAMSON, Ruskin Joseph — secretary · British · appointed 2000-11-13
- BARRETT, Ruth Danielle — director · British · appointed 2000-11-13
- WILLIAMSON, Ruskin Joseph — director · British · appointed 2000-11-13

### Beneficial owners (Persons with Significant Control)

- Miss Ruth Danielle Barrett — 25–50% shares · individual PSC · England — since 2016-04-06
- Mr Ruskin Joseph Williamson — 25–50% shares · individual PSC · England — since 2016-04-06

## Provenance

- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/04106976
- companies_house_bulk — https://find-and-update.company-information.service.gov.uk/company/04106976

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **RUBYKON LIMITED**. Human view: https://whiteintel.dev/entity/be7391fa-e1d0-5f65-ad9e-4728b61a097f · Structured JSON: https://whiteintel.dev/api/public/dossier/be7391fa-e1d0-5f65-ad9e-4728b61a097f._

_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"._