- Companies
- Installers
- London
- Window Fix London Ltd
Window Fix London Ltd
- Company number
- 14615088
- Incorporated
- 24 Jan 20233 years trading
- Registered office
- 45 Wellington Avenue, London, N15 6AX
- Nature of business
- Other construction installation; Glazing; Other building completion and finishing; Other specialised construction activities n.e.c.
Window Fix London Ltd is a 3-year-old private limited company registered in London, company number 14615088, one of 2,278 installation companies (insulation, lifts, shutters and similar) in London. Its next accounts are due at Companies House on 31 October 2026, and the CT600 for the period to 31 January 2026 is due at HMRC on 31 January 2027.
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 down £2,398 (-747%) on the year before, to -£2,719.
- Current assets of -£20 against £9,022 owed within a year: -0.0 times cover.
- 1 employee on average, up from -2 the year before.
- Balance sheets on record for 2 years, 2024 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jan 2025 | -£2,719 | -£20 | £9,022 | 1 | |
| 31 Jan 2024 | -£321 | £1,302 | £13K | -2 |
Where Window Fix London Ltd is registered
The registered office is in London (N15), in the Haringey local authority area, London. Show N15 6AX on a map.
Other trade companies in N15
- Cleanport Services LtdCleaning companies
- Rozelle Cleaning LtdCleaning companies
- Hunt4Heating LtdPlumbers and heating engineers
- Clean Stitch LtdRepair services
- Watt Rite LtdElectricians
- Did-Fit LimitedPlasterers
- Arvin Cleaning Ltd LtdCleaning companies
- North London Building Control LimitedSpecialist contractors
Also registered at this address
1 other company uses the same registered office as Window Fix London Ltd.
- Complete Repairs LtdGlaziers
What happens if Window Fix London Ltd 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 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2026 to 30 Nov 2026 | £150 |
| 1 to 3 months late | 1 Dec 2026 to 31 Jan 2027 | £375 |
| 3 to 6 months late | 1 Feb 2027 to 30 Apr 2027 | £750 |
| More than 6 months late | From 1 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2027 | £200 |
| 3 months late | 30 Apr 2027 | another £200 |
| 6 months late | 31 Jul 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 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
- 14615088
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 24 January 2023 (3 years ago)
- Registered office
- 45 Wellington Avenue, London, N15 6AX
- Nature of business
- Other construction installation (SIC 43290)
Glazing (SIC 43342)
Other building completion and finishing (SIC 43390)
Other specialised construction activities n.e.c. (SIC 43999) - Year end
- 31 January (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 January 2025
- Last confirmation statement
- 7 January 2026
Filing notes for installation companies (insulation, lifts, shutters and similar)
Installation companies (insulation, lifts, shutters, solar and similar) often buy stock and equipment up front, so stock at the year end and capital allowances both affect the tax bill.
Similar companies in London
Other active installation companies (insulation, lifts, shutters and similar) registered in London.
- Window Kits Limited2024
- Window Tint Company Ltd2024
- Windrew Ltd2011
- Winston Builders Ltd2023
- Wire Comms Ltd2023
- Wireworld Ltd2025
- WJ Lift Ltd2020
- WJF Plumbing and Heating Limited2024
All installation companies (insulation, lifts, shutters and similar) in London · All trades in London · Installers across the UK
Frequently asked questions
When are Window Fix London Ltd's accounts due?
Window Fix London Ltd's next accounts are due at Companies House by 31 October 2026 (in 18 days), covering the period to 31 January 2026.
When is Window Fix London Ltd's CT600 due?
The CT600 for the period to 31 January 2026 is due at HMRC by 31 January 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 November 2026.
Is Window Fix London Ltd still trading?
Window Fix London Ltd 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 Window Fix London Ltd do?
Window Fix London Ltd is registered under Other construction installation (SIC 43290); Glazing (SIC 43342); Other building completion and finishing (SIC 43390); Other specialised construction activities n.e.c. (SIC 43999).
How old is Window Fix London Ltd?
Window Fix London Ltd was incorporated on 24 January 2023, 3 years ago.
What is the penalty if Window Fix London Ltd 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 Window Fix London Ltd 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.