---
title: "CMS UK HOLDINGS LIMITED — Ownership Dossier"
canonical: https://whiteintel.dev/entity/ec80da8d-be84-532c-89d8-cf2be31b402b
json: https://whiteintel.dev/api/public/dossier/ec80da8d-be84-532c-89d8-cf2be31b402b
identifier: oo:GB-COH-13552693
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# CMS UK HOLDINGS LIMITED

**Type:** Company  
**Jurisdiction:** GB  
**Identifier:** `oo:GB-COH-13552693`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/ec80da8d-be84-532c-89d8-cf2be31b402b  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/ec80da8d-be84-532c-89d8-cf2be31b402b  

## Ownership & control

### Owners / controllers

- **Mr Christopher Michael Sumner** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/444bd76e-576c-4077-b8e2-3cf625fe4384

### Holdings / subsidiaries

- **DOGSTAR DIGITAL LIMITED** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/2c31fb00-1b1d-532c-9b12-7a49c205fcec
- **DILIGENT DIGITAL LIMITED** (beneficial owner) — 100% — https://whiteintel.dev/entity/33d58a73-83ca-5e04-9d82-60acccae7ea8
- **DOGSTAR DIGITAL LIMITED** (beneficial owner) — 50% — https://whiteintel.dev/entity/2c31fb00-1b1d-532c-9b12-7a49c205fcec
- **DILIGENT DIGITAL LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/33d58a73-83ca-5e04-9d82-60acccae7ea8

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

1. **Mr Christopher Michael Sumner** — beneficial owner 87.5% → *CMS UK HOLDINGS LIMITED*

## Company profile (live · UK Companies House)

- **Company number:** `13552693`
- **Status:** active
- **Type:** ltd
- **Incorporated:** 2021-08-06
- **Registered office:** Office 5, Belgravia House, Grosvenor Street, Mold, Flintshire, CH7 1EJ, United Kingdom
- **SIC:** 63990

### Officers

- SUMNER, Christopher Michael — director · British · appointed 2021-08-06

### Beneficial owners (Persons with Significant Control)

- Mr Christopher Michael Sumner — 75–100% shares · individual PSC · United Kingdom — since 2021-08-06

## Provenance

- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/13552693
- companies_house_bulk — https://find-and-update.company-information.service.gov.uk/company/13552693

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **CMS UK HOLDINGS LIMITED**. Human view: https://whiteintel.dev/entity/ec80da8d-be84-532c-89d8-cf2be31b402b · Structured JSON: https://whiteintel.dev/api/public/dossier/ec80da8d-be84-532c-89d8-cf2be31b402b._

_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"._