Firmoscan
Active16296805Private limited companyFareham

SIREN SECURITY LIMITED

Significant control: Michael Edward O'Brien (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From public filings as at 31 Aug 2026; may contain errors or be out of date.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

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01

Summary

Generated from filed data · no estimates

SIREN SECURITY LIMITED is an active private limited company (company number 16296805) incorporated on 6 March 2025, registered in Fareham. Its registered activity is private security activities (SIC 80100). No accounts have been filed yet; the first accounts are due by 6 December 2026.

There are 78 companies in private security activities in Portsmouth with filed accounts; the median reports net assets of £874 and is 6 years old.

02

Ownership and control

1 active
  • Michael Edward O'Brien
    Individual · since 6 March 2025
    • 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
6 March 20251 yr ago
First accounts due
6 December 2026in 43 days
Confirmation statement due
20 March 2027in 147 days

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

04

Activity

SIC 80100
Private security activities
Accounts type
No Accounts Filed
05

Financials

No accounts on record

No accounts filed yet. The first accounts are due by 6 December 2026; this page updates when they are filed.

06

Timeline

Newest first
  1. Confirmation statement duein 147 days
  2. First accounts duein 43 days
  3. Incorporated
07

Similar companies in Portsmouth

Same activity (private security activities), closest in incorporation date

All companies incorporated on 6 March 2025 · in Mar 2025.

08

Reminders for SIREN SECURITY LIMITED

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 It may contain errors, be incomplete or be out of date, and is not advice or a credit reference.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).