---
title: "SELF-ASSESSMENT SYSTEMS LIMITED — Ownership Dossier"
canonical: https://whiteintel.dev/entity/d8d7addf-e808-59e8-a40d-9bae026094a8
json: https://whiteintel.dev/api/public/dossier/d8d7addf-e808-59e8-a40d-9bae026094a8
identifier: oo:GB-COH-03284147
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# SELF-ASSESSMENT SYSTEMS LIMITED

**Type:** Company  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `oo:GB-COH-03284147`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/d8d7addf-e808-59e8-a40d-9bae026094a8  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/d8d7addf-e808-59e8-a40d-9bae026094a8  

## Ownership & control

### Owners / controllers

- **Mr Andrew William Drinkwater** (beneficial owner) — 50% — https://whiteintel.dev/entity/26587797-a29f-5780-b364-4fcddbec967c
- **Mrs Karen Louise Drinkwater** (beneficial owner) — 50% — https://whiteintel.dev/entity/ca482e63-bf4d-5537-8191-de1f0f459e6a
- **Mr Andrew William Drinkwater** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/fb4a2ce2-87e4-49e7-b851-e72048bed4ae
- **Mrs Karen Louise Drinkwater** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/9a17de51-dad0-4743-b87c-d368336487d5

### 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:** `03284147`
- **Status:** active
- **Type:** ltd
- **Incorporated:** 1996-11-26
- **Registered office:** Office Suite 4, 4 Bridge Street Mill, Bridge Street Witney, Oxfordshire, OX28 1FX
- **SIC:** 69201

### Officers

- DRINKWATER, Karen Louise — secretary · English · appointed 1999-04-06
- DRINKWATER, Karen Louise — director · English · appointed 1999-04-06
- DRINKWATER, Kirk Arney — director · British · appointed 2025-12-05
- COOPER, Brian William — secretary · British · appointed 1996-11-26 · resigned 1999-04-06
- DRINKWATER, Andrew William — secretary · British · appointed 2001-04-01 · resigned 2001-04-01
- SAME-DAY COMPANY SERVICES LIMITED — corporate nominee secretary · appointed 1996-11-26 · resigned 1996-11-26
- COOPER, Brian William — director · British · appointed 1996-11-26 · resigned 1999-04-06
- COOPER, Doreen Margaret — director · British · appointed 1996-11-26 · resigned 1999-04-06
- COOPER, Jane — director · British · appointed 1999-04-06 · resigned 2001-04-01
- DRINKWATER, Andrew William — director · British · appointed 2002-11-26 · resigned 2012-07-01
- WHITEHOUSE, Robert Marcus — director · British · appointed 2009-11-01 · resigned 2014-05-30
- WILDMAN & BATTELL LIMITED — corporate nominee director · appointed 1996-11-26 · resigned 1996-11-26

### Beneficial owners (Persons with Significant Control)

- Mrs Karen Louise Drinkwater — 25–50% shares · individual PSC — since 2016-04-06
- Mr Andrew William Drinkwater — 25–50% shares · individual PSC — ceased 2019-11-20

## Provenance

- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/03284147
- companies_house_bulk — https://find-and-update.company-information.service.gov.uk/company/03284147

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **SELF-ASSESSMENT SYSTEMS LIMITED**. Human view: https://whiteintel.dev/entity/d8d7addf-e808-59e8-a40d-9bae026094a8 · Structured JSON: https://whiteintel.dev/api/public/dossier/d8d7addf-e808-59e8-a40d-9bae026094a8._

_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"._