Firmoscan
Active16487810Private limited companyLondon

QUANTUMDEFENDER SYSTEMS LTD

Significant control: Anna Popa (75–100%)

Companies HouseCompanies House

From public filings as at 31 Aug 2026; may contain errors or be out of date. Verify at Companies House · Terms

Coming soon · product and service lists

What does Quantumdefender Systems Ltd sell?

Registered activity: Advertising agencies (SIC 73110). We’re building product and service lists for UK companies. Get this one when it’s ready.

One email, only about this. If we don’t launch within 60 days we’ll tell you. Privacy
01

Summary

Generated from filed data · no estimates

QUANTUMDEFENDER SYSTEMS LTD is an active private limited company (company number 16487810) incorporated on 2 June 2025, registered in London. Its registered activity is advertising agencies (SIC 73110). No accounts have been filed yet; the first accounts are due by 2 March 2027.

There are 5,115 companies in advertising agencies in London with filed accounts; the median reports net assets of £1,963 and is 6 years old.

02

Ownership and control

1 active · 1 other
  • Mrs Anna Popa
    Individual · since 7 January 2026
    • owns 75–100% of shares
    • holds 75–100% of voting rights
    • can appoint or remove directors
  • Mr Grzegorz Szewczyk
    Individual · since 2 June 2025 · ceased 7 January 2026
    • owns 75–100% of shares
    • holds 75–100% of voting rights
    • can appoint or remove directors

Persons with significant control hold 25% or more of shares or voting rights. Smaller shareholdings are only listed in confirmation-statement documents. Directors and secretaries: see the officers list at Companies House.

03

Key dates

Incorporated
2 June 20251 yr ago
First accounts due
2 March 2027in 130 days
Confirmation statement due
16 June 2027in 236 days

Due dates are expected from Companies House filing rules; confirm on the official register before relying on them.

04

Activity

SIC 73110
Advertising agencies
Accounts type
No Accounts Filed
05

Financials

No accounts on record

No accounts filed yet. The first accounts are due by 2 March 2027; this page updates when they are filed.

06

Timeline

Newest first
  1. Confirmation statement duein 236 days
  2. First accounts duein 130 days
  3. Incorporated
07

Similar companies in London

Same activity (advertising agencies), closest in incorporation date

All companies incorporated on 2 June 2025 · in Jun 2025.

08

Reminders for QUANTUMDEFENDER SYSTEMS LTD

Get an email before each filing deadline — accounts and confirmation statement — so nothing is late.

Source: Companies House register, snapshot 2026-08-31. Open Government Licence v3.0. View on Companies House. Methodology · About · Markdown.

This information comes from public filings and our automated processing of them. It may contain errors, be incomplete or be out of date, and is not advice or a credit reference. Check the official record before relying on it. Terms · Privacy · Report an error (corrected within one working day).