SIA PARTNERS UK PLC, EC1A 7EB : Companies House Number 05884769

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Overview

Company type: Public Limited Company
Incorporated: 2006-07-24
Registered office: 4th Floor 90 Bartholomew Close, London, England, EC1A 7EB
Postcode: EC1A 7EB
Capital: 10 GBP
Accounts category: Full

Accounts

Last made up to: 2025-06-30
Next due by: 2026-12-31
Financial year end: 30 June

Confirmation statement

Last statement dated: 2026-07-29
Next due by: 2027-08-12

View filing history →

Nature of business (SIC)

82990 Other business support service activities not elsewhere classified

Officers 4 current · 5 resigned

Sandrine CARREAU Director

Appointed 2025-11-01

Gary O'SULLIVAN Director

Appointed 2022-04-30

Matthieu COURTECUISSE Director

Appointed 2013-09-13

LONDON LAW SECRETARIAL LIMITED Corporate Nominee Secretary · corporate

Appointed 2006-07-24

View all officers and resignations →

Group structure 4 subsidiaries

UPSIDE X LIMITED
INZENKA LTD Dissolved
MOLTEN HOLDING GROUP LIMITED Dissolved
SKT CONSULTING HOLDINGS LIMITED Dissolved

From persons-with-significant-control filings on the public register.

Public contracts won 5

£181,550 total awarded value where published.

Provision of an expert in benefits measurements as Consultant for Ofgem's Strategic Innovation Fund.

UK SHARED BUSINESS SERVICES LIMITED 2023-05-05 £47,000
Part 1: Connection charges for Developer Services in England - Root Cause Analysis (P&O)

Water Services Regulation Authority (Ofwat) 2020-12-17 £38,300
Insights Project - Developing Insights Matrix of Company Issues

Water Services Regulation Authority (Ofwat) 2019-12-06 £10,000
Lot 1 - Roles 1 and 2 - Three Individuals to Provide Strategy Development and Policy Roles

Water Services Regulation Authority (Ofwat) 2019-02-19 £46,250
Interim Support with In-Period Outcome Delivery Incentives (ODI) Determinations

WATER SERVICES REGULATION AUTHORITY 2018-09-18 £40,000

Contains public sector information licensed under the Open Government Licence v3.0 (Contracts Finder).

Licensed visa sponsor

Licensed by the Home Office to sponsor worker visas: Skilled Worker (Worker (A rating)).

Matched by registered name to the register of licensed sponsors (Home Office, updated daily) — check the register itself before relying on it. Contains public sector information licensed under the Open Government Licence v3.0.

Contact details

Website: http://www.sia-partners.com

Previous company names

Name	Date changed
INVESTANCE UK PLC	2013-11-28

Previous registered addresses 7

Address	Changed on
21 DARTMOUTH STREET, LONDON, SW1H 9BP	2020-07-08
36-38 HATTON GARDEN 1ST FLOOR, LONDON, EC1N 8EB, ENGLAND	2019-09-02
2ND FLOOR 4 EASTCHEAP, LONDON, EC3M 1AE	2017-02-21
2ND FLOOR 4 EASTCHEAP, LONDON, LONDON, EC3M 1AE, UNITED KINGDOM	2016-05-27
PRINCESS HOUSE 4TH FLOOR 27 BUSH LANE, LONDON, EC4R 0AA	2016-05-26
1 CORNHILL, LONDON, EC3V 3ND, UNITED KINGDOM	2013-04-18
LINCOLN HOUSE 300 HIGH HOLBORN, LONDON, WC1V 7JH	2011-07-25

Among its peers

Among the oldest 25%

of 8,732 similar companies in EC, trading since 2006

The class of 2006

20%

of the 18,620 companies in this sector incorporated in 2006 are still active today; 78% have since been dissolved.

A fact about the year, not a forecast for this company.

Property in England & Wales 2 titles

Leasehold: 2
Most recent registration: 2019-06-20
Where: Greater London (2)

Title number	County	Tenure	Registered	Price paid
AGL479902	Greater London	Leasehold	2019-06-20	—
AGL479903	Greater London	Leasehold	2019-06-20	—

For addresses and the authoritative register entry, use HM Land Registry's official search (£3 per title).