---
title: "MAYFIELD BARNSLEY LIMITED — Ownership Dossier"
canonical: https://whiteintel.dev/entity/9fbb8d96-fb5c-550f-b031-aa09766585e0
json: https://whiteintel.dev/api/public/dossier/9fbb8d96-fb5c-550f-b031-aa09766585e0
identifier: oo:GB-COH-05839084
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# MAYFIELD BARNSLEY LIMITED

**Type:** Company  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `oo:GB-COH-05839084`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/9fbb8d96-fb5c-550f-b031-aa09766585e0  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/9fbb8d96-fb5c-550f-b031-aa09766585e0  

## Ownership & control

### Owners / controllers

- **QUEST PROPERTY LTD** (beneficial owner) — 100% — https://whiteintel.dev/entity/e8757683-6917-5e57-80e4-d3fe08bd3f33
- **Mr Jason Lee Brook** (beneficial owner) — 100% — https://whiteintel.dev/entity/f4422988-515e-50c0-854b-4ce98460a3e6
- **Mr John Martin Brook** (beneficial owner) — https://whiteintel.dev/entity/381d5b72-14b9-580a-b837-4e0677d8dd26
- **Quest Property Limited** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/41be5e6d-5f9b-4601-92c3-b7ba849a3682
- **Mr Jason Lee Brook** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/1db910d7-9ca1-48bf-9c05-2925ec6cb0d1
- **Mr John Martin Brook** (beneficial owner) — https://whiteintel.dev/entity/100bf612-f9b3-4042-962f-89d875175aad

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

A **10-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:** `05839084`
- **Status:** active
- **Type:** ltd
- **Incorporated:** 2006-06-06
- **Registered office:** Lower Plaza 1, Gateway Plaza, Fitzwilliam Street, Barnsley, S70 2RF, England
- **SIC:** 68209

### Officers

- BROOK, Jason Lee — director · British · appointed 2006-06-06
- BROOK, John Martin — director · British · appointed 2006-07-20
- BELL, Matthew — secretary · appointed 2018-01-30 · resigned 2021-05-14
- BRIDGER, Benjamin Matthew — secretary · appointed 2021-05-14 · resigned 2022-05-30
- CROSLAND, Richard Andrew — secretary · English · appointed 2006-06-06 · resigned 2013-12-31

### Beneficial owners (Persons with Significant Control)

- [Quest Property Limited](https://whiteintel.dev/entity/41be5e6d-5f9b-4601-92c3-b7ba849a3682) — 75–100% shares · corporate PSC · England — since 2018-06-28
- Mr Jason Lee Brook — 75–100% shares · individual PSC · England — ceased 2018-06-28
- Mr John Martin Brook — significant influence or control · individual PSC · England — ceased 2018-06-28

## Provenance

- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/05839084
- companies_house_bulk — https://find-and-update.company-information.service.gov.uk/company/05839084

## Get the full, resolved dossier (agent-callable)

The above is the free teaser. The resolved **multi-hop UBO chain**, ownership **%**, full **financial history**, itemised **assets** and the hop-by-hop **exposure path** are the paid depth — callable as tools from your agent:

```bash
npx -y @whiteintel/mcp-server   # then: get_dossier · trace_ownership_path · check_offshore_exposure
```

Or unlock a one-off cited dossier for **MAYFIELD BARNSLEY LIMITED** — https://whiteintel.dev/entity/9fbb8d96-fb5c-550f-b031-aa09766585e0 · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **MAYFIELD BARNSLEY LIMITED**. Human view: https://whiteintel.dev/entity/9fbb8d96-fb5c-550f-b031-aa09766585e0 · Structured JSON: https://whiteintel.dev/api/public/dossier/9fbb8d96-fb5c-550f-b031-aa09766585e0._

_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"._