Annual accounts
Total Exemption Full accounts
31/01/2027Filing deadline
- Next accounts made up to
- 30/04/2026
- Last accounts made up to
- 31/12/2024
Reference data exactly as held at Companies House.
The 4 most recent documents filed at Companies House.
Previous accounting period extended from 2025-12-31 to 2026-04-30
14/02/26 Statement of Capital gbp 3
Total exemption full accounts made up to 2024-12-31
Change of details for Mr Mahyad Ghassemibouyaghchi as a person with significant control on 2024-02-15
What Pre-Score will tell you

The two filings Companies House requires every year, and where each one stands against its deadline today.
Total Exemption Full accounts
31/01/2027Filing deadline
Confirms the registry record is up to date
28/02/2027Filing deadline
The latest figures SIGMA OS SOFTWARE LTD filed. Okredo holds filed accounts data for 2022–2024; the year-by-year record is on the financials page.
Net Assets
2023: £-1.58M
Total Assets
2023: £236.22K
Cash in Bank
2023: £94.17K
Total Liabilities
2023: £1.80M
Employees
2023: 5
Of the 4 measures with an earlier filing to compare against, 1 rose and 3 fell. Net assets moved furthest, down 55.13% on 2023. See the full financial analysis for SIGMA OS SOFTWARE LTD.
The full financial record
Four ways through SIGMA OS SOFTWARE LTD's filed accounts — the year-by-year numbers, the compound rates and the ratios behind them.
Headcount as reported to Companies House for 2022–2024.
| Year | Employees | Change |
|---|---|---|
| 2024 | 4 | -1 |
| 2023 | 5 | +1 |
| 2022 | 4 | – |
Reported employee count was unchanged at 4 between 2022 and 2024. See how headcount moved alongside the reported financials.
Credit report
It is a professional assessment of the company 's performance, revealing company's potential and risks, showing it's past experiences and revealing future prospects.
Directors, secretaries and other appointed officers, with the period each has served.
| Person | Role | Period | Connected companies |
|---|---|---|---|
| Director | 13/07/2021–Present | 5 | |
| Director | 13/07/2021–Present | 4 | |
| Director | 15/02/2021–Present | 1 |
Individuals or entities with significant control over the company, as declared to Companies House.
| Person | Period | Connected companies |
|---|---|---|
| 13/07/2021–Present | 5 | |
| 13/07/2021–Present | 4 | |
| 15/02/2021–Present | 1 |
Every document on the Companies House record, newest first.
Previous accounting period extended from 2025-12-31 to 2026-04-30
14/02/26 Statement of Capital gbp 3
Total exemption full accounts made up to 2024-12-31
Change of details for Mr Mahyad Ghassemibouyaghchi as a person with significant control on 2024-02-15
Confirmation statement made on 2025-02-14 with updates
Change of details for Mr Mahyad Ghassemibouyaghchi as a person with significant control on 2024-02-15
Director's details changed for Mr Mahyad Ghassemibouyaghchi on 2024-02-15
Director's details changed for Mr Mahyad Ghassemibouyaghchi on 2024-02-15
Current accounting period shortened from 2025-02-28 to 2024-12-31
Total exemption full accounts made up to 2024-02-29
Registered office address changed from Suite 1.06, Fox Court 14 Gray’S Inn Road London WC1X 8HN England to Fox Court Sigmaos, Suite 1.06, 14 Gray’S Inn Road London WC1X 8HN on 2024-08-08
Registered office address changed from Abbey House Sigmaos Inc. 74-76 Saint John St London EC1M 4DT England to 14 Gray’S Inn Road Suite 1.06, Fox Court, 14 Gray's Inn Road London WC1X 8HN on 2024-03-13
Showing 12 of 19 filings
See when the next accounts and confirmation statement are due
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A short description of the company, written from its Companies House record.
SIGMA OS SOFTWARE LTD is a private limited company registered in the United Kingdom, based in Fox Court, Sigmaos, Suite 1.06, 14 Gray’S Inn Road, London WC1X 8HN. Companies House classifies its business as Other software publishing. It has been on the register for 5 years 7 months.
The register currently records it as active. Its 2024 accounts report net assets of £-2.46M and 4 employees.
Answered from this company's own registry record and filed figures.
Companies House records SIGMA OS SOFTWARE LTD under one registered business activity: Other software publishing (58.29 - SIC 2007).
SIGMA OS SOFTWARE LTD is recorded as active on the Companies House register, and has been on it since 15/02/2021.
The most recent accounts Okredo holds cover 2024 and report net assets of £-2.46M, total assets of £168.66K, cash in bank of £45.06K and total liabilities of £2.63M.
The most recent document on the record is dated 23/06/2026: Previous accounting period extended from 2025-12-31 to 2026-04-30, 3 months ago.
On the current registry record, accounts are due by 31/01/2027 and the next confirmation statement is due by 28/02/2027.
Companies House lists 3 officers and 3 people with significant control.