---
title: "BASSAIRE CLEANROOMS LTD — Ownership Dossier"
canonical: https://whiteintel.dev/entity/d815d58e-e72d-5540-9183-3ec22f9155e6
json: https://whiteintel.dev/api/public/dossier/d815d58e-e72d-5540-9183-3ec22f9155e6
identifier: oo:GB-COH-05409097
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# BASSAIRE CLEANROOMS LTD

**Type:** Company  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `oo:GB-COH-05409097`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/d815d58e-e72d-5540-9183-3ec22f9155e6  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/d815d58e-e72d-5540-9183-3ec22f9155e6  

## Ownership & control

### Owners / controllers

- **DERNTHOM LIMITED** (beneficial owner) — 100% — https://whiteintel.dev/entity/e6bc7e97-c726-5f13-8c97-f2a4a5a0bed4
- **Mr Philip Ardern** (beneficial owner) — 50% — https://whiteintel.dev/entity/67c115e2-2a66-545c-9b6e-857426c165f2
- **Mr Neil James Thomas** (beneficial owner) — 75% — https://whiteintel.dev/entity/5e449f02-2596-500e-8b55-b76cd86ae4cb
- **Mr Philip Ardern** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/e892561f-61d4-4ea8-a78b-9196314be6af
- **DERNTHOM LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/e6bc7e97-c726-5f13-8c97-f2a4a5a0bed4
- **Mr Neil James Thomas** (beneficial owner) — 62.5% — https://whiteintel.dev/entity/e6d3739a-c91a-4918-981c-093f62b55e6d

### Holdings / subsidiaries

- **BASSAIRE LIMITED** (beneficial owner) — 100% — https://whiteintel.dev/entity/3140fab2-f72f-55a4-ab1c-1c805139aafc
- **CLEANROOM PROJECTS LIMITED** (beneficial owner) — 100% — https://whiteintel.dev/entity/d8f40d1d-563b-5903-bca5-ef0872a1293b
- **ENVAIR LIMITED** (beneficial owner) — 100% — https://whiteintel.dev/entity/74b91f09-2537-5482-aa40-d4ea742c2958
- **BASSAIRE LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/3140fab2-f72f-55a4-ab1c-1c805139aafc
- **ENVAIR LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/74b91f09-2537-5482-aa40-d4ea742c2958
- **CLEANROOM PROJECTS LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/d8f40d1d-563b-5903-bca5-ef0872a1293b

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

A **12-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:** `05409097`
- **Status:** active
- **Type:** ltd
- **Incorporated:** 2005-03-31
- **Registered office:** York Avenue, Haslingden, Rossendale, BB4 4HX, England
- **SIC:** 25990

## Financials (Companies House accounts)

| Figure | 2026-05-31 |
|---|---:|
| Net assets | £3,446,174 |
| Cash | £4,420,128 |
| Shareholder funds | £40,900 |
| Fixed assets | £228,444 |
| Current assets | £5,582,623 |
| Employees | 13 |

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

### Officers

- ARDERN, Kerri — secretary · appointed 2022-08-15
- ARDERN, Philip — director · British · appointed 2005-03-31
- THOMAS, Harry James — director · British · appointed 2025-07-15
- ARDERN, Diane — secretary · appointed 2010-03-25 · resigned 2022-08-15
- THOMAS, Neil James — secretary · British · appointed 2005-03-31 · resigned 2010-03-25
- BRIGHTON SECRETARY LTD — corporate nominee secretary · appointed 2005-03-31 · resigned 2005-04-04
- THOMAS, Neil James — director · British · appointed 2005-03-31 · resigned 2023-01-09
- BRIGHTON DIRECTOR LTD — corporate nominee director · appointed 2005-03-31 · resigned 2005-04-04

### Beneficial owners (Persons with Significant Control)

- [Dernthom Limited](https://whiteintel.dev/entity/e6bc7e97-c726-5f13-8c97-f2a4a5a0bed4) — 75–100% shares · corporate PSC · England — since 2017-07-05
- Mr Philip Ardern — 25–50% shares · individual PSC · England — ceased 2017-07-05
- Mr Neil James Thomas — 50–75% shares · individual PSC · England — ceased 2017-07-05

## Provenance

- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/05409097
- companies_house_bulk — https://find-and-update.company-information.service.gov.uk/company/05409097
- companies_house_accounts — https://find-and-update.company-information.service.gov.uk/company/05409097/filing-history

## 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 **BASSAIRE CLEANROOMS LTD** — https://whiteintel.dev/entity/d815d58e-e72d-5540-9183-3ec22f9155e6 · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **BASSAIRE CLEANROOMS LTD**. Human view: https://whiteintel.dev/entity/d815d58e-e72d-5540-9183-3ec22f9155e6 · Structured JSON: https://whiteintel.dev/api/public/dossier/d815d58e-e72d-5540-9183-3ec22f9155e6._

_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"._