---
title: "J3 CONSULTANCY LTD — Ownership Dossier"
canonical: https://whiteintel.dev/entity/d20e5fc6-4ee3-557e-9b7d-af993d82d615
json: https://whiteintel.dev/api/public/dossier/d20e5fc6-4ee3-557e-9b7d-af993d82d615
identifier: oo:GB-COH-13557876
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# J3 CONSULTANCY LTD

**Type:** Company  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `oo:GB-COH-13557876`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/d20e5fc6-4ee3-557e-9b7d-af993d82d615  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/d20e5fc6-4ee3-557e-9b7d-af993d82d615  

## Ownership & control

### Owners / controllers

- **J3 ADVISORY LIMITED** (beneficial owner) — 100% — https://whiteintel.dev/entity/fbdb2d43-4948-559e-bed7-fd9cb40dac1d
- **Mr Jack Michael Bristow** (beneficial owner) — 50% — https://whiteintel.dev/entity/d7270e48-1c72-5538-ba0d-6fb336316c7f
- **Mr John Joseph Leadsom** (beneficial owner) — https://whiteintel.dev/entity/1f7a86c1-244a-599e-94f5-51ea854d0616
- **Mr John Joseph Leadsom** (beneficial owner) — https://whiteintel.dev/entity/a18009f3-b89c-4330-a2e1-432a81e8679b
- **Mr Jack Michael Bristow** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/592910a8-99db-4164-a98b-2af7294160eb
- **Mr James Mole** (beneficial owner) — https://whiteintel.dev/entity/99728b6f-49ae-4f55-998b-5a003ea08b0e
- **J3 ADVISORY LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/fbdb2d43-4948-559e-bed7-fd9cb40dac1d

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

A **14-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:** `13557876`
- **Status:** active
- **Type:** ltd
- **Incorporated:** 2021-08-10
- **Registered office:** 38 South Molton Street, London, W1K 5RL, England
- **SIC:** 64999

### Officers

- BRISTOW, Jack Michael — director · British · appointed 2021-08-10
- LEADSOM, John Joseph — director · British · appointed 2021-08-10
- MENDONCA, Rosita — director · Portuguese · appointed 2026-06-03
- MOLE, James — director · British · appointed 2021-08-10 · resigned 2026-04-02

### Beneficial owners (Persons with Significant Control)

- [J3 Advisory Limited](https://whiteintel.dev/entity/fbdb2d43-4948-559e-bed7-fd9cb40dac1d) — 75–100% shares · corporate PSC · England — since 2021-12-01
- Mr John Joseph Leadsom — significant influence or control · individual PSC · United Kingdom — ceased 2021-12-01
- Mr Jack Michael Bristow — 25–50% shares · individual PSC · United Kingdom — ceased 2021-12-01
- Mr James Mole — significant influence or control · individual PSC · United Kingdom — ceased 2021-12-01

## Provenance

- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/13557876
- companies_house_bulk — https://find-and-update.company-information.service.gov.uk/company/13557876

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **J3 CONSULTANCY LTD**. Human view: https://whiteintel.dev/entity/d20e5fc6-4ee3-557e-9b7d-af993d82d615 · Structured JSON: https://whiteintel.dev/api/public/dossier/d20e5fc6-4ee3-557e-9b7d-af993d82d615._

_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"._