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Company number
05884769

SIA PARTNERS UK PLC

Active
✓ Active company on the official register. Next accounts due 31 December 2026.

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
SIA PARTNERS UK PLC
Company number
05884769
Registered office
4TH FLOOR, 90 BARTHOLOMEW CLOSE, LONDON, EC1A 7EB, ENGLAND · 7 other companies at this postcode
Company type
Public Limited Company
Incorporated on
24 July 2006
Status
Active
Age
20 years
Previous names
INVESTANCE UK PLC (to 28 Nov 2013)
Nature of business (SIC)
82990 — Other business support service activities n.e.c.
Accounts — next due
31 Dec 2026
Accounts — last made up to
30 Jun 2025
Confirmation statement — next due
12 Aug 2027
Confirmation statement — last
29 Jul 2026

People with significant control

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

Mr Matthieu Courtecuisse
owns 50–75% of shares · holds 50–75% of voting rights
Notified 06/04/2016

Corporate structure

Who controls this company, and who they control in turn

1 controller Drag to move · scroll to zoom · double-click to expand
Company Person Current control Ended

Connections

Mr Matthieu Courtecuisse
born 06/1973 · France owns 50–75% of shares · holds 50–75% of votes Notified 06/04/2016

Change history

Reconstructed from the dated records Companies House publishes

DateChangeWasNow
06/04/2016 Person with significant control added Mr Matthieu Courtecuisse
28/11/2013 Registered name changed INVESTANCE UK PLC SIA PARTNERS UK PLC

Documents for SIA PARTNERS UK PLC

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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

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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.

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Data protection register

Registered with the Information Commissioner's Office as a data protection fee payer.

Sia Partners UK PLC — EC1A 7BN
Tier 2 · renews 13/03/2027
ICO entry

The ICO publishes no company number, so this is matched on the registered name . Check the ICO entry before relying on it.

Get this company via API

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Frequently asked questions

What is the company number of SIA PARTNERS UK PLC?
According to the official registry, the company number of SIA PARTNERS UK PLC is 05884769.
Where is SIA PARTNERS UK PLC registered?
The registered office is 4TH FLOOR, 90 BARTHOLOMEW CLOSE, LONDON, EC1A 7EB, ENGLAND.
What is the SIC code of SIA PARTNERS UK PLC?
The nature of business is recorded under SIC code 82990 — Other business support service activities n.e.c..
Who controls SIA PARTNERS UK PLC?
Mr Matthieu Courtecuisse is recorded as a person with significant control, and owns 50–75% of shares, holds 50–75% of voting rights.
When are the next accounts of SIA PARTNERS UK PLC due?
The next annual accounts are due by 31 December 2026, and the last accounts were made up to 30 June 2025.

About SIA PARTNERS UK PLC (05884769)

SIA PARTNERS UK PLC is a public limited company incorporated on 24 July 2006 and registered in the United Kingdom under company number 05884769. Its registered office is at 4TH FLOOR, 90 BARTHOLOMEW CLOSE, LONDON, EC1A 7EB, ENGLAND. The recorded nature of business is other business support service activities n.e.c. (SIC 82990). The company is currently active , with statutory accounts last made up to 30 June 2025. , and the person with significant control is Mr Matthieu Courtecuisse. 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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