---
title: "AC1D MANAGEMENT LTD — Ownership Dossier"
canonical: https://whiteintel.dev/entity/5191add4-bf14-5c75-aa64-7bea2aeead97
json: https://whiteintel.dev/api/public/dossier/5191add4-bf14-5c75-aa64-7bea2aeead97
identifier: oo:GB-COH-14749158
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# AC1D MANAGEMENT LTD

**Type:** Company  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `oo:GB-COH-14749158`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/5191add4-bf14-5c75-aa64-7bea2aeead97  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/5191add4-bf14-5c75-aa64-7bea2aeead97  

## Ownership & control

### Owners / controllers

- **Mr Martin Barnes** (beneficial owner) — 100% — https://whiteintel.dev/entity/20b2461a-57f2-5a14-a3fc-bb7440c61bb6
- **Mr Martin Barnes** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/753d7e10-13e2-4e3a-b077-6b97bb3ee275
- **Mr William John Dunseath** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/b35499b8-12f1-40f0-9c1a-808c67e4fdac

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

A **3-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:** `14749158`
- **Status:** active
- **Type:** ltd
- **Incorporated:** 2023-03-22
- **Registered office:** 124-128 City Road, London, EC1V 2NX, England
- **SIC:** 70229

### Officers

- BARNES, Martin — director · British · appointed 2023-03-22
- DUNSEATH, William John — director · British · appointed 2023-12-11 · resigned 2025-06-20

### Beneficial owners (Persons with Significant Control)

- Mr Martin Barnes — 75–100% shares · individual PSC · England — since 2023-03-22
- Mr William John Dunseath — 25–50% shares · individual PSC · England — ceased 2025-06-20

## Provenance

- companies_house_bulk — https://find-and-update.company-information.service.gov.uk/company/14749158
- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/14749158

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **AC1D MANAGEMENT LTD**. Human view: https://whiteintel.dev/entity/5191add4-bf14-5c75-aa64-7bea2aeead97 · Structured JSON: https://whiteintel.dev/api/public/dossier/5191add4-bf14-5c75-aa64-7bea2aeead97._

_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"._