---
title: "QUADRATIC SYSTEMS LTD — Ownership Dossier"
canonical: https://whiteintel.dev/entity/624c2c3d-35d4-5cf7-8d21-89036e0bf52d
json: https://whiteintel.dev/api/public/dossier/624c2c3d-35d4-5cf7-8d21-89036e0bf52d
identifier: oo:GB-COH-12254629
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# QUADRATIC SYSTEMS LTD

**Type:** Company  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `oo:GB-COH-12254629`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/624c2c3d-35d4-5cf7-8d21-89036e0bf52d  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/624c2c3d-35d4-5cf7-8d21-89036e0bf52d  

## Ownership & control

### Owners / controllers

- **Mr Martin Alan Russell** (beneficial owner) — 100% — https://whiteintel.dev/entity/ddb26841-69e4-5190-b668-2ce1d2d489d9
- **Mr Jerome Raymond Day** (beneficial owner) — 50% — https://whiteintel.dev/entity/ee741a3e-01ac-5927-82e9-89b9c017b274
- **Mr Martin Alan Russell** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/72ae058c-d7c6-49b5-9fae-e9c272809122
- **Mr Jerome Raymond Day** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/400b579e-c16e-4b08-8759-0146735e4c61

### 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:** `12254629`
- **Status:** active
- **Type:** ltd
- **Incorporated:** 2019-10-10
- **Registered office:** 61 Bridge Street, Kington, HR5 3DJ, England
- **SIC:** 62012

### Officers

- RUSSELL, Martin Alan — director · British · appointed 2019-10-10

### Beneficial owners (Persons with Significant Control)

- Mr Martin Alan Russell — 75–100% shares · individual PSC · England — since 2019-10-10
- Mr Jerome Raymond Day — 25–50% shares · individual PSC · England — ceased 2024-02-15

## Provenance

- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/12254629
- companies_house_bulk — https://find-and-update.company-information.service.gov.uk/company/12254629

## 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 **QUADRATIC SYSTEMS LTD** — https://whiteintel.dev/entity/624c2c3d-35d4-5cf7-8d21-89036e0bf52d · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **QUADRATIC SYSTEMS LTD**. Human view: https://whiteintel.dev/entity/624c2c3d-35d4-5cf7-8d21-89036e0bf52d · Structured JSON: https://whiteintel.dev/api/public/dossier/624c2c3d-35d4-5cf7-8d21-89036e0bf52d._

_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"._