---
title: "DRILLING SUPPLIES UK LIMITED — Ownership Dossier"
canonical: https://whiteintel.dev/entity/12f84a18-a1aa-5b0c-a8ac-4e7e7fe59fc0
json: https://whiteintel.dev/api/public/dossier/12f84a18-a1aa-5b0c-a8ac-4e7e7fe59fc0
identifier: oo:GB-COH-06045403
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# DRILLING SUPPLIES UK LIMITED

**Type:** Company  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `oo:GB-COH-06045403`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/12f84a18-a1aa-5b0c-a8ac-4e7e7fe59fc0  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/12f84a18-a1aa-5b0c-a8ac-4e7e7fe59fc0  

## Ownership & control

### Owners / controllers

- **Kathryn Mary Smith** (beneficial owner) — 50% — https://whiteintel.dev/entity/cab11340-ced0-5b87-a561-0a6f0c060f6f
- **Mr Philip John Smith** (beneficial owner) — 75% — https://whiteintel.dev/entity/6fb07c8b-c175-5af4-b68d-e1c3cf55cec1
- **RSK ENVIRONMENT LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/c2e05021-6125-5f5a-b2bb-06ffc00253fa
- **Kathryn Mary Smith** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/6a25534d-ccf9-4aeb-861d-200ce440d8d3
- **Mr Philip John Smith** (beneficial owner) — 62.5% — https://whiteintel.dev/entity/90524cda-633c-4d9e-8a29-72b859bc91df

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

A **20-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:** `06045403`
- **Status:** active
- **Type:** ltd
- **Incorporated:** 2007-01-09
- **Registered office:** Spring Lodge 172 Chester Road, Helsby, Frodsham, WA6 0AR, England
- **SIC:** 46630

### Officers

- EVANS, Sally — secretary · appointed 2019-03-29
- HERLIHY, Francis — director · British · appointed 2025-04-01
- KNIGHTON, Claire Ashley — director · British · appointed 2019-03-29
- MACKERETH, Stephen James — director · British · appointed 2019-03-29
- MAESTRI, Andrea — director · British · appointed 2025-03-01
- RYDER, Alasdair Alan — director · British · appointed 2019-03-29
- SMITH, Philip John — director · British · appointed 2007-01-09
- TAYLOR, Erika — director · British · appointed 2025-09-08
- SMITH, Philip John — secretary · British · appointed 2007-01-09 · resigned 2019-03-29
- DRAPER, Abigail Sarah — director · British · appointed 2019-03-29 · resigned 2025-03-31
- SMITH, Kathryn Mary — director · British · appointed 2007-01-09 · resigned 2019-03-29

### Beneficial owners (Persons with Significant Control)

- [Rsk Environment Limited](https://whiteintel.dev/entity/c2e05021-6125-5f5a-b2bb-06ffc00253fa) — 75–100% shares · corporate PSC · Scotland — since 2019-03-29
- Kathryn Mary Smith — 25–50% shares · individual PSC · England — ceased 2019-03-29
- Mr Philip John Smith — 50–75% shares · individual PSC · England — ceased 2019-03-29

## Provenance

- companies_house_bulk — https://find-and-update.company-information.service.gov.uk/company/06045403
- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/06045403

## 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 **DRILLING SUPPLIES UK LIMITED** — https://whiteintel.dev/entity/12f84a18-a1aa-5b0c-a8ac-4e7e7fe59fc0 · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **DRILLING SUPPLIES UK LIMITED**. Human view: https://whiteintel.dev/entity/12f84a18-a1aa-5b0c-a8ac-4e7e7fe59fc0 · Structured JSON: https://whiteintel.dev/api/public/dossier/12f84a18-a1aa-5b0c-a8ac-4e7e7fe59fc0._

_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"._