---
title: "H MAC GROUNDWORKS LTD — Ownership Dossier"
canonical: https://whiteintel.dev/entity/4b043e99-b39b-5197-b5c9-64217fbe9ca5
json: https://whiteintel.dev/api/public/dossier/4b043e99-b39b-5197-b5c9-64217fbe9ca5
identifier: oo:GB-COH-15835460
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# H MAC GROUNDWORKS LTD

**Type:** Company  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `oo:GB-COH-15835460`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/4b043e99-b39b-5197-b5c9-64217fbe9ca5  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/4b043e99-b39b-5197-b5c9-64217fbe9ca5  

## Ownership & control

### Owners / controllers

- **Henry Angus Macilwaine** (beneficial owner) — 100% — https://whiteintel.dev/entity/d822eb02-3de3-5e1a-ad90-0ea7ae0ad167
- **Neil Patrick Macilwaine** (beneficial owner) — 100% — https://whiteintel.dev/entity/826970ef-e8f5-5869-9f2c-41d9e2763957
- **Neil Patrick Macilwaine** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/cf50a98b-1e03-4b1f-a47f-b8ca90bed5f6
- **Henry Angus Macilwaine** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/ea9dbc0e-1af9-4ba8-8a09-634049a08f18

### 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:** `15835460`
- **Status:** active
- **Type:** ltd
- **Incorporated:** 2024-07-12
- **Registered office:** The Cottage, Plough Lane, Chippenham, SN15 5PW, England
- **SIC:** 41100, 41201, 43290

### Officers

- MACILWAINE, Henry Angus — director · British · appointed 2024-07-12
- MACILWAINE, Neil Patrick — director · British · appointed 2024-07-12

### Beneficial owners (Persons with Significant Control)

- Henry Angus Macilwaine — 75–100% shares · individual PSC · England — since 2024-07-12
- Neil Patrick Macilwaine — 75–100% shares · individual PSC · England — since 2024-07-12

## Provenance

- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/15835460
- companies_house_bulk — https://find-and-update.company-information.service.gov.uk/company/15835460

## 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 **H MAC GROUNDWORKS LTD** — https://whiteintel.dev/entity/4b043e99-b39b-5197-b5c9-64217fbe9ca5 · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **H MAC GROUNDWORKS LTD**. Human view: https://whiteintel.dev/entity/4b043e99-b39b-5197-b5c9-64217fbe9ca5 · Structured JSON: https://whiteintel.dev/api/public/dossier/4b043e99-b39b-5197-b5c9-64217fbe9ca5._

_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"._