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Company number
04843556

INSULATE WINDOWS LIMITED

Active
✓ Active company on the official register. Next accounts due 31 October 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
INSULATE WINDOWS LIMITED
Company number
04843556
Registered office
THE COTTAGE, 2 NORMAN WAY, LONDON, N14 6NA · 6 other companies at this postcode
Company type
Private Limited Company
Incorporated on
24 July 2003
Status
Active
Age
23 years
Previous names
MARK & CO CONSULTANCY LIMITED (to 13 Nov 2023) · MARK & CO (SOLICITORS) LIMITED (to 13 Nov 2023)
Nature of business (SIC)
68100 — Buying and selling of own real estate · 68209 — Other letting and operating of own or leased real estate · 68320 — Management of real estate on a fee or contract basis
Accounts — next due
31 Oct 2026
Accounts — last made up to
31 Oct 2024
Confirmation statement — next due
11 Jan 2027
Confirmation statement — last
28 Dec 2025

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 Mark Christopher Periklis
owns 75–100% of shares · holds 75–100% of voting rights · can appoint and remove directors
Notified 06/04/2016
Mrs Evanthia Dolores Periklis
owns 75–100% of shares (through a trust) · holds 75–100% of voting rights (through a trust) · can appoint and remove directors
Notified 13/06/2025

Corporate structure

Who controls this company, and who they control in turn

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

Connections

Mrs Evanthia Dolores Periklis
born 01/1939 · United Kingdom owns 75–100% of shares · holds 75–100% of votes · can appoint and remove directors Notified 13/06/2025 Controls 3 companies
Mr Mark Christopher Periklis
born 10/1964 · United Kingdom owns 75–100% of shares · holds 75–100% of votes · can appoint and remove directors Control ended 13/06/2025 Controls 3 companies

Change history

Reconstructed from the dated records Companies House publishes

DateChangeWasNow
13/06/2025 Person with significant control ceased Mr Mark Christopher Periklis
13/06/2025 Person with significant control added Mrs Evanthia Dolores Periklis
13/11/2023 Registered name changed MARK & CO (SOLICITORS) LIMITED MARK & CO CONSULTANCY LIMITED
13/11/2023 Registered name changed MARK & CO CONSULTANCY LIMITED INSULATE WINDOWS LIMITED
06/04/2016 Person with significant control added Mr Mark Christopher Periklis

Documents for INSULATE WINDOWS LIMITED

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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.

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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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Frequently asked questions

What is the company number of INSULATE WINDOWS LIMITED?
According to the official registry, the company number of INSULATE WINDOWS LIMITED is 04843556.
Where is INSULATE WINDOWS LIMITED registered?
The registered office is THE COTTAGE, 2 NORMAN WAY, LONDON, N14 6NA.
What is the SIC code of INSULATE WINDOWS LIMITED?
The nature of business is recorded under SIC code 68100 — Buying and selling of own real estate, 68209 — Other letting and operating of own or leased real estate, 68320 — Management of real estate on a fee or contract basis.
Who controls INSULATE WINDOWS LIMITED?
Mr Mark Christopher Periklis is recorded as a person with significant control, and owns 75–100% of shares, holds 75–100% of voting rights, can appoint and remove directors.
When are the next accounts of INSULATE WINDOWS LIMITED due?
The next annual accounts are due by 31 October 2026, and the last accounts were made up to 31 October 2024.

About INSULATE WINDOWS LIMITED (04843556)

INSULATE WINDOWS LIMITED is a private limited company incorporated on 24 July 2003 and registered in the United Kingdom under company number 04843556. Its registered office is at THE COTTAGE, 2 NORMAN WAY, LONDON, N14 6NA. The recorded nature of business is buying and selling of own real estate (SIC 68100). The company is currently active , with statutory accounts last made up to 31 October 2024. , and the person with significant control is Mr Mark Christopher Periklis. 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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