---
title: "ADVANCED VENTILATION SOLUTIONS LTD — Ownership Dossier"
canonical: https://whiteintel.dev/entity/eef5ea86-86d8-5b9b-9199-5beaf58a5493
json: https://whiteintel.dev/api/public/dossier/eef5ea86-86d8-5b9b-9199-5beaf58a5493
identifier: oo:GB-COH-NI655035
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# ADVANCED VENTILATION SOLUTIONS LTD

**Type:** Company  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `oo:GB-COH-NI655035`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/eef5ea86-86d8-5b9b-9199-5beaf58a5493  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/eef5ea86-86d8-5b9b-9199-5beaf58a5493  

## Ownership & control

### Owners / controllers

- **Mr Jonathan Grimshaw** (beneficial owner) — 50% — https://whiteintel.dev/entity/4a54b3c2-a304-5f06-bb99-5f7d99697781
- **RGM TOPCO LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/5e86f8df-76e3-52ba-b815-05c8445ebd57
- **RGM VENT LIMITED** (beneficial owner) — 62.5% — https://whiteintel.dev/entity/4619f0ca-6ec4-558d-9770-2dad1f86bcea
- **Mr Jonathan Grimshaw** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/faca455e-8b91-4848-a5ff-27c9c5d63756

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

A **29-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:** `NI655035`
- **Status:** active
- **Type:** ltd
- **Incorporated:** 2018-08-15
- **Registered office:** Unit 1 Church Road, Ballynure, Ballyclare, Antrim, BT39 9UF, Northern Ireland
- **SIC:** 24200, 43220

### Officers

- RAMSEY, Derick — secretary · appointed 2023-10-06
- GRIMSHAW, Jonathan — director · British · appointed 2018-08-15
- MURPHY, Kerry Ann — director · British · appointed 2022-11-14
- MURPHY, Raymond — director · British · appointed 2018-08-15
- MCCLINTON, Deborah Ann — secretary · appointed 2022-11-01 · resigned 2023-08-11
- GRANT, Maurice Andrew — director · British · appointed 2018-08-15 · resigned 2022-11-14

### Beneficial owners (Persons with Significant Control)

- [Rgm Topco Limited](https://whiteintel.dev/entity/5e86f8df-76e3-52ba-b815-05c8445ebd57) — 75–100% shares · corporate PSC · Northern Ireland — since 2021-06-16
- Mr Jonathan Grimshaw — 25–50% shares · individual PSC · Northern Ireland — ceased 2021-06-16
- [Rgm Vent Limited](https://whiteintel.dev/entity/4619f0ca-6ec4-558d-9770-2dad1f86bcea) — 50–75% shares · corporate PSC · Northern Ireland — ceased 2021-06-16

## Provenance

- companies_house_bulk — https://find-and-update.company-information.service.gov.uk/company/NI655035
- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/NI655035

## 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 **ADVANCED VENTILATION SOLUTIONS LTD** — https://whiteintel.dev/entity/eef5ea86-86d8-5b9b-9199-5beaf58a5493 · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **ADVANCED VENTILATION SOLUTIONS LTD**. Human view: https://whiteintel.dev/entity/eef5ea86-86d8-5b9b-9199-5beaf58a5493 · Structured JSON: https://whiteintel.dev/api/public/dossier/eef5ea86-86d8-5b9b-9199-5beaf58a5493._

_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"._