---
title: "SIMPSON DEVELOPMENTS (AYRSHIRE) LTD — Ownership Dossier"
canonical: https://whiteintel.dev/entity/b666cccd-bec8-5d0f-825c-8cb1187b8fcf
json: https://whiteintel.dev/api/public/dossier/b666cccd-bec8-5d0f-825c-8cb1187b8fcf
identifier: oo:GB-COH-SC553260
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# SIMPSON DEVELOPMENTS (AYRSHIRE) LTD

**Type:** Company  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `oo:GB-COH-SC553260`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/b666cccd-bec8-5d0f-825c-8cb1187b8fcf  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/b666cccd-bec8-5d0f-825c-8cb1187b8fcf  

## Ownership & control

### Owners / controllers

- **Mr Malcolm George Simpson** (beneficial owner) — 50% — https://whiteintel.dev/entity/55ef4ad1-0bfb-5d56-9b45-d0cb545b33e5
- **Mrs Karen Simpson** (beneficial owner) — 50% — https://whiteintel.dev/entity/e0ee4435-ed3f-5595-894d-dcf61adc2537
- **Mr Malcolm George Simpson** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/ee8259e3-f2f0-4b16-b757-300b8f6a6547
- **Mrs Karen Simpson** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/26b52ce7-443e-4942-a881-5e3f4202062a

### Holdings / subsidiaries

- **SYSTEM FIVE OFF-SITE LTD.** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/223db593-712f-5a9e-9e7f-655b92d7e512
- **ROBERTRYAN TIMBER ENGINEERING LIMITED** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/3cb0ffc8-54cc-52c0-80d8-8413e9eb1ffd
- **ROBERTRYAN HOMES LIMITED** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/f2fe57be-5aa8-5589-b5ce-6b1bd2935783
- **R.D.K. CONSTRUCTION LIMITED** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/86100c85-37c2-5afe-86d4-6c6e915e3db8
- **R.D.K. CONSTRUCTION LIMITED** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/86100c85-37c2-5afe-86d4-6c6e915e3db8

### 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:** `SC553260`
- **Status:** active
- **Type:** ltd
- **Incorporated:** 2016-12-22
- **Registered office:** 152a High Street, Irvine, Ayrshire, KA12 8AN, United Kingdom
- **SIC:** 82990

### Officers

- SIMPSON, Karen — director · British · appointed 2016-12-22
- SIMPSON, Malcolm George — director · Scottish · appointed 2016-12-22

### Beneficial owners (Persons with Significant Control)

- Mr Malcolm George Simpson — 25–50% shares · individual PSC · United Kingdom — since 2016-12-22
- Mrs Karen Simpson — 25–50% shares · individual PSC · United Kingdom — since 2016-12-22

## Provenance

- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/SC553260
- companies_house_bulk — https://find-and-update.company-information.service.gov.uk/company/SC553260

## 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 **SIMPSON DEVELOPMENTS (AYRSHIRE) LTD** — https://whiteintel.dev/entity/b666cccd-bec8-5d0f-825c-8cb1187b8fcf · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **SIMPSON DEVELOPMENTS (AYRSHIRE) LTD**. Human view: https://whiteintel.dev/entity/b666cccd-bec8-5d0f-825c-8cb1187b8fcf · Structured JSON: https://whiteintel.dev/api/public/dossier/b666cccd-bec8-5d0f-825c-8cb1187b8fcf._

_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"._