---
title: "EFFORTMARK LIMITED — Ownership Dossier"
canonical: https://whiteintel.dev/entity/cd254d2b-1fc1-5b97-bec7-eb8ade97e7ba
json: https://whiteintel.dev/api/public/dossier/cd254d2b-1fc1-5b97-bec7-eb8ade97e7ba
identifier: oo:GB-COH-02892026
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# EFFORTMARK LIMITED

**Type:** Company  
**Jurisdiction:** GB  
**Identifier:** `oo:GB-COH-02892026`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/cd254d2b-1fc1-5b97-bec7-eb8ade97e7ba  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/cd254d2b-1fc1-5b97-bec7-eb8ade97e7ba  

## Ownership & control

### Owners / controllers

- **Mrs Caroline Jarrett** (beneficial owner) — 75% — https://whiteintel.dev/entity/0923b835-1727-56ad-b93d-8f21df6c3fea
- **Mrs Caroline Jarrett** (beneficial owner) — 62.5% — https://whiteintel.dev/entity/1efdc53f-bb27-469d-869b-6153cd940aa8

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

1. **Mrs Caroline Jarrett** — beneficial owner 75% → *EFFORTMARK LIMITED*
1. **Mrs Caroline Jarrett** — beneficial owner 62.5% → *EFFORTMARK LIMITED*

## Company profile (live · UK Companies House)

- **Company number:** `02892026`
- **Status:** Active
- **Type:** Private Limited Company
- **Incorporated:** 1994-01-27
- **Registered office:** 16 HEATH ROAD, LEIGHTON BUZZARD, BEDFORDSHIRE, LU7 3AB
- **SIC:** 62020 - Information technology consultancy activities, 70229 - Management consultancy activities other than financial management, 74100 - specialised design activities

## Provenance

- companies_house_bulk — https://find-and-update.company-information.service.gov.uk/company/02892026
- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/02892026

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **EFFORTMARK LIMITED**. Human view: https://whiteintel.dev/entity/cd254d2b-1fc1-5b97-bec7-eb8ade97e7ba · Structured JSON: https://whiteintel.dev/api/public/dossier/cd254d2b-1fc1-5b97-bec7-eb8ade97e7ba._

_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"._