# AAA WebFiling

> UK Companies House filing and company-portfolio software for accountants, company secretaries and law firms, operated by HAMILTONN LTD.

AAA WebFiling is an independent UK-focused web application operated by HAMILTONN LTD (Companies House number 15023569).

It is designed for accountants, company secretaries, law firms and other authorised professional users who manage UK company portfolios and Companies House-related operational work.

## What the platform does

- Company search and portfolio management using Companies House data
- Company profile, officer, PSC and filing-history sync
- Accounts and confirmation-statement deadline visibility
- Supported electronic Companies House filing workflows
- Accounts workflows for supported micro-entity and dormant scenarios, plus supported document-upload routes
- Confirmation statement workflows including current director identity-verification information where required
- Company incorporation workflow
  - [UK Company Incorporation Software](https://aaawebfiling.uk/company-incorporation)
- Client forms, authority records, address book and supporting documents
- Submission status/history and administrative records

## VAT service in development

AAA WebFiling is testing a planned Making Tax Digital for VAT service in HMRC’s sandbox. Live VAT filing is not yet available and remains subject to HMRC production access. The initial accounting scope is standard invoice-based VAT accounting. HMRC Assist is being tested separately in the sandbox and is not available for live returns through AAA WebFiling.

- [VAT (MTD) — In Development](https://aaawebfiling.uk/vat-mtd)

## Important distinction

AAA WebFiling is independent software operated by HAMILTONN LTD and is not part of Companies House.

The accuracy and legal sufficiency of information filed remain the responsibility of the company and its authorised officers or agents.

## Operator

HAMILTONN LTD
Companies House number: 15023569
Main website: [hamiltonn.net](https://hamiltonn.net/)
Product website: [aaawebfiling.uk](https://aaawebfiling.uk/)

## Key pages

- [AAA WebFiling home](https://aaawebfiling.uk/)
- [Platform Features — AAA WebFiling Companies House Software](https://aaawebfiling.uk/features)
- [Companies House Filing Software](https://aaawebfiling.uk/companies-house-filing)
- [Companies House Accounts Filing Software](https://aaawebfiling.uk/accounts-filing)
- [Confirmation Statement Filing Software (CS01)](https://aaawebfiling.uk/confirmation-statement)
- [Companies House Filing Software for Accountants](https://aaawebfiling.uk/for-accountants)
- [Company Secretarial Software for UK Companies](https://aaawebfiling.uk/for-company-secretaries)
- [Companies House Filing Software for Law Firms](https://aaawebfiling.uk/for-law-firms)
- [Companies House Filing Resources](https://aaawebfiling.uk/resources)
- [Software Filing for Companies House from 2028 — What UK Companies Need to Know](https://aaawebfiling.uk/resources/software-filing-2028)
- [Companies House Identity Verification 2026 — Directors, PSCs and Personal Codes](https://aaawebfiling.uk/resources/identity-verification)
- [Companies House Filing Deadlines — Accounts and Confirmation Statements](https://aaawebfiling.uk/resources/filing-deadlines)
- [Security & Data Protection](https://aaawebfiling.uk/security)
- [Pricing](https://aaawebfiling.uk/pricing)

## Solutions and campaign landing pages

- [AAA WebFiling Solutions — Professional, Filing & White-Label](https://aaawebfiling.uk/solutions)
- [Companies House Filing Software for Accountants](https://aaawebfiling.uk/solutions/accountants)
- [Company Secretarial Software for UK Portfolios](https://aaawebfiling.uk/solutions/company-secretaries)
- [Companies House Filing Platform for Law Firms](https://aaawebfiling.uk/solutions/law-firms)
- [Company Formation & Filing Platform for Formation Agents](https://aaawebfiling.uk/solutions/formation-agents)
- [Corporate Services Company Filing Platform UK](https://aaawebfiling.uk/solutions/corporate-service-providers)
- [White-Label Companies House Filing Software](https://aaawebfiling.uk/solutions/white-label)
- [WebFiling Reseller & OEM Partner Platform](https://aaawebfiling.uk/solutions/reseller-partners)
- [Companies House Filing Software UK](https://aaawebfiling.uk/solutions/companies-house-filing-software)
- [Company Accounts Filing Software UK](https://aaawebfiling.uk/solutions/accounts-filing)
- [Confirmation Statement Filing Software](https://aaawebfiling.uk/solutions/confirmation-statements)
- [UK Company Incorporation Workflow](https://aaawebfiling.uk/solutions/company-incorporation)
- [Director & PSC Company Change Services](https://aaawebfiling.uk/solutions/director-psc-changes)
- [Change Registered Office or Registered Email](https://aaawebfiling.uk/solutions/registered-office-email)
- [Shares & Shareholder Company Administration](https://aaawebfiling.uk/solutions/shares-shareholders)
- [Prepare for Companies House Software Accounts Filing 2028](https://aaawebfiling.uk/solutions/software-filing-2028)

The white-label offer is currently a managed commercial deployment, not an instant self-service theming switch. White-label or reseller rights, branding, domain, support, filing scope and commercial terms are agreed separately.

## Source policy

Current Companies House rules and dates in the resource centre are linked to official GOV.UK or Companies House guidance. Product capability statements should be interpreted as descriptions of AAA WebFiling, not statements of law.

Last updated: 2026-10-27