---
title: "ARTEMAS JOSEPH HOLDINGS LTD — Ownership Dossier"
canonical: https://whiteintel.dev/entity/340104b8-eaff-5861-a128-21629efbb8f2
json: https://whiteintel.dev/api/public/dossier/340104b8-eaff-5861-a128-21629efbb8f2
identifier: oo:GB-COH-12188902
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# ARTEMAS JOSEPH HOLDINGS LTD

**Type:** Company  
**Jurisdiction:** GB  
**Identifier:** `oo:GB-COH-12188902`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/340104b8-eaff-5861-a128-21629efbb8f2  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/340104b8-eaff-5861-a128-21629efbb8f2  

## Ownership & control

### Owners / controllers

- **Mr Michael Agapios Diamandis** (beneficial owner) — 50% — https://whiteintel.dev/entity/a98d4048-0374-5612-bc1a-dba1013b0e45
- **Mr Artemas Diamandis** (beneficial owner) — 100% — https://whiteintel.dev/entity/2ecae70c-bcfa-58f4-a738-b28e6d1ed4ef
- **Mr John Simpson** (beneficial owner) — 50% — https://whiteintel.dev/entity/786c1b90-29d3-5289-b2a9-5b0bd089a0f2
- **Mr Michael Agapios Diamandis** (beneficial owner) — 50% — https://whiteintel.dev/entity/e02cc844-7a3b-5f9f-b5b1-1f41d3305b3c
- **Mr John Simpson** (beneficial owner) — 50% — https://whiteintel.dev/entity/277f3445-531c-5e85-9519-c9a618ab213b
- **Mr Michael Agapios Diamandis** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/f7b5c966-df06-4629-abb9-8d324fb11150
- **Mr John Simpson** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/102f5219-3a51-47c4-a4b2-988b04ea60fa
- **Mr John Simpson** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/d50a6848-d4f9-4464-a5a7-cb8319a7eddd
- **Mr Michael Agapios Diamandis** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/04d1c79d-4518-44c1-ad22-a13719bb835a
- **Mr Artemas Diamandis** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/55240dab-4107-4c13-bd8c-71cb0c5a7fab

### Holdings / subsidiaries

- **ELEMENT WINDOWS HERTS LTD** (beneficial owner) — 100% — https://whiteintel.dev/entity/36e8d10b-8ab8-577e-8f01-3a4b81bf6d52
- **TORNICK SERVICES LIMITED** (beneficial owner) — 100% — https://whiteintel.dev/entity/570fefd2-d0dd-5813-bba4-e2113737f54b
- **MAD OPERATIONS LTD** (beneficial owner) — 100% — https://whiteintel.dev/entity/d8644593-6b74-5813-84dd-8447175b7f01
- **TILON (HOLDINGS) LTD** (beneficial owner) — 100% — https://whiteintel.dev/entity/df95e418-7910-58f1-8d91-af60882633c9
- **TILON C G LTD** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/57fec662-cc6c-55e4-846e-834989105fd1
- **TILON (HOLDINGS) LTD** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/df95e418-7910-58f1-8d91-af60882633c9
- **ELEMENT WINDOWS HERTS LTD** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/36e8d10b-8ab8-577e-8f01-3a4b81bf6d52
- **TORNICK SERVICES LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/570fefd2-d0dd-5813-bba4-e2113737f54b
- **Chase Window Company Holdings Limited** (beneficial owner) — 62.5% — https://whiteintel.dev/entity/7b199452-03d3-467e-ba8a-58433f24f3bf
- **MAD OPERATIONS LTD** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/d8644593-6b74-5813-84dd-8447175b7f01

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

1. **Mr Michael Agapios Diamandis** — beneficial owner 50% → *ARTEMAS JOSEPH HOLDINGS LTD*
1. **Mr Artemas Diamandis** — beneficial owner 100% → *ARTEMAS JOSEPH HOLDINGS LTD*
1. **Mr John Simpson** — beneficial owner 50% → *ARTEMAS JOSEPH HOLDINGS LTD*
1. **Mr Michael Agapios Diamandis** — beneficial owner 50% → *ARTEMAS JOSEPH HOLDINGS LTD*
1. **Mr John Simpson** — beneficial owner 50% → *ARTEMAS JOSEPH HOLDINGS LTD*
1. **Mr Michael Agapios Diamandis** — beneficial owner 37.5% → *ARTEMAS JOSEPH HOLDINGS LTD*
1. **Mr John Simpson** — beneficial owner 37.5% → *ARTEMAS JOSEPH HOLDINGS LTD*
1. **Mr John Simpson** — beneficial owner 37.5% → *ARTEMAS JOSEPH HOLDINGS LTD*
1. **Mr Michael Agapios Diamandis** — beneficial owner 37.5% → *ARTEMAS JOSEPH HOLDINGS LTD*
1. **Mr Artemas Diamandis** — beneficial owner 87.5% → *ARTEMAS JOSEPH HOLDINGS LTD*

## Company profile (live · UK Companies House)

- **Company number:** `12188902`
- **Status:** active
- **Type:** ltd
- **Incorporated:** 2019-09-04
- **Registered office:** Suite 1 Windrush Court, Abingdon Business Park, Abingdon, Oxfordshire, OX14 1SY, United Kingdom
- **SIC:** 22290, 64202

### Officers

- DIAMANDIS, Michael Agapios — director · British · appointed 2021-07-16
- LEONARD, Lorna — secretary · appointed 2021-07-16 · resigned 2024-09-23
- LEONARD, Lorna — secretary · appointed 2019-09-04 · resigned 2021-07-16
- DIAMANDIS, Artemas — director · British · appointed 2021-07-16 · resigned 2021-07-16
- DIAMANDIS, Michael Agapios — director · British · appointed 2019-09-04 · resigned 2021-07-16

### Beneficial owners (Persons with Significant Control)

- Mr John Simpson — 25–50% shares · individual PSC · United Kingdom — since 2021-07-16
- Mr Michael Agapios Diamandis — 25–50% shares · individual PSC · United Kingdom — since 2021-07-16
- Mr Artemas Diamandis — 75–100% shares · individual PSC · United Kingdom — ceased 2021-07-16
- Mr Michael Agapios Diamandis — 25–50% shares · individual PSC · United Kingdom — ceased 2021-07-16
- Mr John Simpson — 25–50% shares · individual PSC · United Kingdom — ceased 2021-07-16

## Provenance

- companies_house_bulk — https://find-and-update.company-information.service.gov.uk/company/12188902
- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/12188902

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **ARTEMAS JOSEPH HOLDINGS LTD**. Human view: https://whiteintel.dev/entity/340104b8-eaff-5861-a128-21629efbb8f2 · Structured JSON: https://whiteintel.dev/api/public/dossier/340104b8-eaff-5861-a128-21629efbb8f2._

_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"._