- Companies
- Painters and decorators
- Birmingham
- Window Insulation Limited
Window Insulation Limited
- Company number
- 13230721
- Incorporated
- 26 Feb 20215 years trading
- Registered office
- 13 Alexander Road, Birmingham, West Midlands, B27 6ER
- Nature of business
- Painting; Glazing; Other building completion and finishing
Window Insulation Limited is a 5-year-old private limited company registered in Birmingham, company number 13230721, one of 110 painting and decorating companies in Birmingham. Its next accounts are due at Companies House on 30 November 2026, and the CT600 for the period to 28 February 2026 is due at HMRC on 28 February 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 £54K on the year before, to -£49K.
- Net assets rose in 1 of 3 year-on-year comparisons on record.
- Current assets of £147K against £228K owed within a year: 0.6 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 4 years, 2022 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 28 Feb 2025 | -£49K | £147K | £228K | 1 | |
| 29 Feb 2024 | £4,962 | £36K | £41K | 1 | |
| 28 Feb 2023 | -£45K | 1 | |||
| 28 Feb 2022 | £100 | 1 |
Where Window Insulation Limited is registered
The registered office is in Birmingham (B27), in the Birmingham local authority area, West Midlands. Show B27 6ER on a map.
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What happens if Window Insulation 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 30 November 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Dec 2026 to 31 Dec 2026 | £150 |
| 1 to 3 months late | 1 Jan 2027 to 28 Feb 2027 | £375 |
| 3 to 6 months late | 1 Mar 2027 to 31 May 2027 | £750 |
| More than 6 months late | From 1 Jun 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Mar 2027 | £200 |
| 3 months late | 28 May 2027 | another £200 |
| 6 months late | 28 Aug 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Feb 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
- 13230721
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 26 February 2021 (5 years ago)
- Registered office
- 13 Alexander Road, Birmingham, West Midlands, B27 6ER
- Nature of business
- Painting (SIC 43341)
Glazing (SIC 43342)
Other building completion and finishing (SIC 43390) - Year end
- 28 February (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 28 February 2025
- Last confirmation statement
- 26 February 2026
Filing notes for painting and decorating companies
Decorating companies are usually labour-based micro-entities working for homeowners and contractors, some of it under CIS.
Similar companies in Birmingham
Other active painting and decorating companies registered in Birmingham.
- Your Cleaning Mate Ltd2024
- 3 Kings Property Services Ltd2026
- 360 Maintenance Ltd2022
- 4-MJ Property Services Ltd2026
- A & C Commercial Glazing Limited1986
- A.R.T Decorating Service Ltd2025
- A.T. Decorating Limited2003
- Aiart Creations Ltd2026
All painting and decorating companies in Birmingham · All trades in Birmingham · Painters and decorators across the UK
Frequently asked questions
When are Window Insulation Limited's accounts due?
Window Insulation Limited's next accounts are due at Companies House by 30 November 2026 (in 49 days), covering the period to 28 February 2026.
When is Window Insulation Limited's CT600 due?
The CT600 for the period to 28 February 2026 is due at HMRC by 28 February 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 December 2026.
Is Window Insulation Limited still trading?
Window Insulation 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 Window Insulation Limited do?
Window Insulation Limited is registered under Painting (SIC 43341); Glazing (SIC 43342); Other building completion and finishing (SIC 43390).
How old is Window Insulation Limited?
Window Insulation Limited was incorporated on 26 February 2021, 5 years ago.
What is the penalty if Window Insulation 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 Window Insulation 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.