---
title: "HARMONYWELL (UK) LTD — Ownership Dossier"
canonical: https://whiteintel.dev/entity/fd6f1218-9fce-5fd1-8f7d-d97e8518cd2d
json: https://whiteintel.dev/api/public/dossier/fd6f1218-9fce-5fd1-8f7d-d97e8518cd2d
identifier: oo:GB-COH-07565725
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# HARMONYWELL (UK) LTD

**Type:** Company  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `oo:GB-COH-07565725`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/fd6f1218-9fce-5fd1-8f7d-d97e8518cd2d  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/fd6f1218-9fce-5fd1-8f7d-d97e8518cd2d  

## Ownership & control

### Owners / controllers

- **Ms Lilian Wong** (beneficial owner) — 50% — https://whiteintel.dev/entity/05017677-b906-56fa-8c8b-0db4813d6f82
- **Mr Jian Seong Choo** (beneficial owner) — 50% — https://whiteintel.dev/entity/fcc3d23e-94ce-52ee-aaf6-b3b18a780fa5
- **Ms Lilian Wong** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/10afeaed-f96f-46f9-a4a6-f086406f34e4
- **Mr Jian Seong Choo** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/9b037dc7-7765-4407-aff0-0257086e888a

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

A **4-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:** `07565725`
- **Status:** active
- **Type:** ltd
- **Incorporated:** 2011-03-16
- **Registered office:** 29-30 Frith Street, London, W1D 5LG
- **SIC:** 70229

## Financials (Companies House accounts)

| Figure | 2025-09-30 |
|---|---:|
| Net assets | -£88,196 |
| Cash | £174 |
| Shareholder funds | £100 |
| Fixed assets | £963 |
| Employees | 1 |

_Latest filed period. Full 2-year history unlocks with a paid dossier — https://whiteintel.dev/pricing. As filed at Companies House._

### Officers

- CHOO, Jian Seong — director · Malaysian · appointed 2011-10-01
- WONG, Lilian — director · Malaysian · appointed 2011-03-23
- ONG, Chok Koon — director · Malaysian · appointed 2011-03-16 · resigned 2011-03-23

### Beneficial owners (Persons with Significant Control)

- Ms Lilian Wong — 25–50% shares · individual PSC · England — since 2016-11-23
- Mr Jian Seong Choo — 25–50% shares · individual PSC · England — since 2016-11-23

## Provenance

- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/07565725
- companies_house_accounts — https://find-and-update.company-information.service.gov.uk/company/07565725/filing-history
- companies_house_bulk — https://find-and-update.company-information.service.gov.uk/company/07565725

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **HARMONYWELL (UK) LTD**. Human view: https://whiteintel.dev/entity/fd6f1218-9fce-5fd1-8f7d-d97e8518cd2d · Structured JSON: https://whiteintel.dev/api/public/dossier/fd6f1218-9fce-5fd1-8f7d-d97e8518cd2d._

_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"._