- Company number
- 12338330
- Incorporated
- 28 Nov 20196 years trading
- Registered office
- C/O Pearlman Rose Jack Dash House, 2 Lawn House Close, London, E14 9YQ
- Nature of business
- Glazing
Supreme Windows London Limited is a 6-year-old private limited company registered in London, company number 12338330, one of 307 glazing companies in London. Its next accounts are due at Companies House on 31 December 2026, and its first CT600 is due at HMRC on 31 December 2026.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Finances
From each year's balance sheet filed at Companies House. Small companies do not have to publish turnover or profit, so these are balance sheet figures.
- Net assets up £15K (+34.7%) on the year before, to £57K.
- Net assets rose in 3 of 4 year-on-year comparisons on record.
- Current assets of £137K against £54K owed within a year: 2.5 times cover.
- 4 employees on average, up from 2 the year before.
- Balance sheets on record for 5 years, 2020 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2024 | £57K | £137K | £54K | 4 | |
| 31 Dec 2023 | £42K | £87K | £21K | 2 | |
| 31 Dec 2022 | £35K | £98K | £24K | 0 | |
| 31 Dec 2021 | -£2,168 | £30K | £50K | £1,787 | 0 |
| 31 Dec 2020 | £1,091 | £33K | £54K | £836 | 0 |
Where Supreme Windows London Limited is registered
The registered office is in London (E14), in the Tower Hamlets local authority area, London. Show E14 9YQ on a map.
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Also registered at this address
13 other companies use the same registered office as Supreme Windows London Limited.
- D A MOT Centre LimitedMechanics and garages
- Dream Home London LimitedProperty developers
- FK Construction Services LimitedBuilders
- Greystone Holdings LtdProperty developers
- Keithley Developments LimitedProperty developers
- Launchmere LimitedProperty developers
- M D Estates LimitedProperty developers
- M D Halstead LimitedProperty developers
- Mact Scaffolding (London) LtdScaffolders
- Mount Delvin Bromley LimitedProperty developers
- Propertyplus LimitedProperty developers
- PSJ Construction LimitedProperty developers
- Vedose LtdProperty developers
What happens if Supreme Windows London Limited files late
Companies House charges an automatic penalty the day after the deadline, and it rises the longer the accounts are late. These are the dates for this company's accounts due on 31 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 2028 | another 10% of any unpaid tax |
For returns filed on or after 1 April 2026. Late three times in a row and the £200 penalties become £1,000 each.
Company details
As held on the Companies House register.
- Company number
- 12338330
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 28 November 2019 (6 years ago)
- Registered office
- C/O Pearlman Rose Jack Dash House, 2 Lawn House Close, London, E14 9YQ
- Nature of business
- Glazing (SIC 43342)
- Year end
- 31 December (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 December 2024
- Last confirmation statement
- 31 December 2025
Filing notes for glazing companies
Glazing companies often take deposits before work starts. Deposits held at the year end are a liability, not income, until the job is done.
Similar companies in London
Other active glazing companies registered in London.
- SV Glazing UK Limited2015
- Swift Glass Ltd2022
- Thames Frames Ltd2026
- Thames Glass Ltd2015
- Thames View Windows Ltd2022
- The Best Windows Installer Ltd2025
- The Portland Window Company Ltd2019
- The Shopfronts and Shutters Company Ltd2022
All glazing companies in London · All trades in London · Glaziers across the UK
Frequently asked questions
When are Supreme Windows London Limited's accounts due?
Supreme Windows London Limited's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is Supreme Windows London Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 31 December 2025, due by 31 December 2026, and one for the period to 31 March 2026, due by 31 March 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Supreme Windows London Limited still trading?
Supreme Windows London Limited is listed as active on the Companies House register as of 1 Oct 2026. Active means it has not been dissolved or entered insolvency; it does not show whether it is currently taking on work.
What does Supreme Windows London Limited do?
Supreme Windows London Limited is registered under Glazing (SIC 43342).
How old is Supreme Windows London Limited?
Supreme Windows London Limited was incorporated on 28 November 2019, 6 years ago.
What is the penalty if Supreme Windows London Limited files its accounts late?
Companies House charges £150 if the accounts are up to 1 month late, £375 up to 3 months, £750 up to 6 months and £1,500 after that, doubled if the previous year's accounts were also late. HMRC charges £200 for a CT600 filed a day late and another £200 at 3 months.
Official records
View Supreme Windows London Limited on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026). Deadlines are worked out from the register and assume a standard accounting period; a change of year end or a short period moves them. This page is general information, not tax or accountancy advice.