Firmoscan
Active16795973Private limited companyYork

THALLASSA POWER SYSTEMS LTD

Significant control: Richard Breen (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From public filings as at 31 Aug 2026; may contain errors or be out of date.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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Registered activity: Defence activities (SIC 84220). We’re building product and service lists for UK companies. Get this one when it’s ready.

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01

Summary

Generated from filed data · no estimates

THALLASSA POWER SYSTEMS LTD is an active private limited company (company number 16795973) incorporated on 20 October 2025, registered in York. Its registered activity is defence activities (SIC 84220). No accounts have been filed yet; the first accounts are due by 20 July 2027.

There are 87 companies in defence activities in Other with filed accounts; the median reports net assets of £14k and is 10 years old.

02

Ownership and control

1 active
  • Mr Richard Breen
    Individual · since 20 October 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
20 October 20251 yr ago
First accounts due
20 July 2027in 268 days
Confirmation statement due
3 November 2026in 9 days

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

04

Activity

SIC 84220
Defence activities
Accounts type
No Accounts Filed
05

Financials

No accounts on record

No accounts filed yet. The first accounts are due by 20 July 2027; this page updates when they are filed.

06

Timeline

Newest first
  1. First accounts duein 268 days
  2. Confirmation statement duein 9 days
  3. Incorporated
07

Similar companies in the UK

Same activity (defence activities), closest in incorporation date

All companies incorporated on 20 October 2025 · in Oct 2025.

08

Reminders for THALLASSA POWER SYSTEMS LTD

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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).