opendata.bot
Company number
13201691

SIGMA OS SOFTWARE LTD

Active
✓ Active company on the official register. Next accounts due 31 January 2027.

Company details

London, England Contains OS data © Crown copyright and database right. Contains Royal Mail data © Royal Mail copyright and database right. Source: Office for National Statistics licensed under the Open Government Licence v.3.0.
Registered name
SIGMA OS SOFTWARE LTD
Company number
13201691
Registered office
FOX COURT, SIGMAOS, SUITE 1.06, 14 GRAY’S INN ROAD, LONDON, WC1X 8HN, ENGLAND · 127 other companies at this postcode
Company type
Private Limited Company
Incorporated on
15 February 2021
Status
Active
Age
5 years
Nature of business (SIC)
58290 — Other software publishing
Accounts — next due
31 Jan 2027
Accounts — last made up to
31 Dec 2024
Confirmation statement — next due
28 Feb 2027
Confirmation statement — last
14 Feb 2026

What the register says

Facts from the register, with the dates they are filed under. Not a score: what they mean is for you to judge, and every line can be checked against Companies House itself.

Companies House register snapshot, read 02/09/2026.

People with significant control

Beneficial owners holding over 25% of shares, voting rights or the right to appoint directors

Mr Ali Attar
owns 25–50% of shares · holds 25–50% of voting rights
Notified 13/07/2021
Mr Mahyad Ghassemibouyaghchi
owns 25–50% of shares · holds 25–50% of voting rights
Notified 15/02/2021
Mr Saurav Mitra
owns 25–50% of shares · holds 25–50% of voting rights
Notified 13/07/2021

Corporate structure

Who controls this company, and who they control in turn

3 controllers Drag to move · scroll to zoom · double-click to expand
Company Person Current control Ended

Connections

Mr Ali Attar
born 01/1997 · United Kingdom owns 25–50% of shares · holds 25–50% of votes Notified 13/07/2021 Controls 2 companies
Mr Mahyad Ghassemibouyaghchi
born 12/1992 · United Kingdom owns 25–50% of shares · holds 25–50% of votes Notified 15/02/2021
Mr Saurav Mitra
born 10/1997 · United Kingdom owns 25–50% of shares · holds 25–50% of votes Notified 13/07/2021 Controls 3 companies

Change history

Reconstructed from the dated records Companies House publishes

DateChangeWasNow
13/07/2021 Person with significant control added Mr Saurav Mitra
13/07/2021 Person with significant control added Mr Ali Attar
15/02/2021 Person with significant control added Mr Mahyad Ghassemibouyaghchi

Documents for SIGMA OS SOFTWARE LTD

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Company extract£1.99

The full registration record as held today — name, number, status, registered office, company type, previous names, officers, PSC and SIC codes, timestamped for your file.

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Financial statements£3.99

Every figure the company’s own accounts state, across each filed period, with year-on-year movement. Most UK companies file small or micro-entity accounts — a balance sheet and a headcount, no turnover or profit.

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Ownership report£3.99

Who controls the company: persons with significant control, the nature of that control, the ownership graph and every other company those controllers hold.

PDF Order

Data protection register

No entry found on the ICO register of fee payers under this name.

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Get this company via API

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X-Api-Key: $OPENDATA_KEY
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Frequently asked questions

What is the company number of SIGMA OS SOFTWARE LTD?
According to the official registry, the company number of SIGMA OS SOFTWARE LTD is 13201691.
Where is SIGMA OS SOFTWARE LTD registered?
The registered office is FOX COURT, SIGMAOS, SUITE 1.06, 14 GRAY’S INN ROAD, LONDON, WC1X 8HN, ENGLAND.
What is the SIC code of SIGMA OS SOFTWARE LTD?
The nature of business is recorded under SIC code 58290 — Other software publishing.
Who controls SIGMA OS SOFTWARE LTD?
Mr Ali Attar is recorded as a person with significant control, and owns 25–50% of shares, holds 25–50% of voting rights.
When are the next accounts of SIGMA OS SOFTWARE LTD due?
The next annual accounts are due by 31 January 2027, and the last accounts were made up to 31 December 2024.

About SIGMA OS SOFTWARE LTD (13201691)

SIGMA OS SOFTWARE LTD is a private limited company incorporated on 15 February 2021 and registered in the United Kingdom under company number 13201691. Its registered office is at FOX COURT, SIGMAOS, SUITE 1.06, 14 GRAY’S INN ROAD, LONDON, WC1X 8HN, ENGLAND. The recorded nature of business is other software publishing (SIC 58290). The company is currently active , with statutory accounts last made up to 31 December 2024. , and the person with significant control is Mr Ali Attar. This profile is provided by opendata.bot by Noetikos, aggregating official data from Companies House bulk data , last refreshed 2 September 2026.

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