---
title: "ALLIN1 ADVISORY LTD — Ownership Dossier"
canonical: https://whiteintel.dev/entity/22cc2928-030d-55d4-a10e-b49e60abfea1
json: https://whiteintel.dev/api/public/dossier/22cc2928-030d-55d4-a10e-b49e60abfea1
identifier: oo:GB-COH-15060175
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# ALLIN1 ADVISORY LTD

**Type:** Company  
**Jurisdiction:** GB  
**Identifier:** `oo:GB-COH-15060175`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/22cc2928-030d-55d4-a10e-b49e60abfea1  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/22cc2928-030d-55d4-a10e-b49e60abfea1  

## Ownership & control

### Owners / controllers

- **Mr Simon Justin Colin Williams** (beneficial owner) — 50% — https://whiteintel.dev/entity/d90f1a14-62fa-58b6-90b0-a8572df64dc9
- **Mrs Karen Holden** (beneficial owner) — 100% — https://whiteintel.dev/entity/5f5628bc-385d-5660-8354-21da911f384e
- **Mr Simon Justin Colin Williams** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/2ab0ebe8-1192-4d7c-ad8d-69e55b59dc46
- **Mrs Karen Holden** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/102c6a51-c20a-479a-b306-c770b15627cb

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

1. **Mr Simon Justin Colin Williams** — beneficial owner 50% → *ALLIN1 ADVISORY LTD*
1. **Mrs Karen Holden** — beneficial owner 100% → *ALLIN1 ADVISORY LTD*
1. **Mr Simon Justin Colin Williams** — beneficial owner 37.5% → *ALLIN1 ADVISORY LTD*
1. **Mrs Karen Holden** — beneficial owner 87.5% → *ALLIN1 ADVISORY LTD*

## Company profile (live · UK Companies House)

- **Company number:** `15060175`
- **Status:** active
- **Type:** ltd
- **Incorporated:** 2023-08-09
- **Registered office:** 1 Cornhill, London, EC3V 3ND, England
- **SIC:** 69102

### Officers

- HOLDEN, Karen — director · British · appointed 2023-08-09
- STONEMAN, Jacqueline — director · British · appointed 2025-05-22
- WILLIAMS, Simon Justin Colin — director · British · appointed 2023-08-09 · resigned 2025-01-21

### Beneficial owners (Persons with Significant Control)

- Mrs Karen Holden — 75–100% shares · individual PSC · England — since 2023-08-09
- Mr Simon Justin Colin Williams — 25–50% shares · individual PSC · England — ceased 2025-01-21

## Provenance

- companies_house_bulk — https://find-and-update.company-information.service.gov.uk/company/15060175
- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/15060175

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **ALLIN1 ADVISORY LTD**. Human view: https://whiteintel.dev/entity/22cc2928-030d-55d4-a10e-b49e60abfea1 · Structured JSON: https://whiteintel.dev/api/public/dossier/22cc2928-030d-55d4-a10e-b49e60abfea1._

_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"._