- Companies
- Property developers
- Slough
- Insulation Wire Limited
Insulation Wire Limited
- Company number
- 13757838
- Incorporated
- 22 Nov 20214 years trading
- Registered office
- 117 Shaggy Calf Lane, Slough, SL2 5HR
- Nature of business
- Development of building projects; Plumbing, heat and air-conditioning installation
Insulation Wire Limited is a 4-year-old private limited company registered in Slough, company number 13757838, one of 316 property development companies in Slough. Its next accounts are due at Companies House on 31 August 2027, and the CT600 for the period to 30 November 2026 is due at HMRC on 30 November 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 £1,967 (-0.5%) on the year before, to £414K.
- Net assets rose in 1 of 3 year-on-year comparisons on record.
- 5 employees 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 |
|---|---|---|---|---|---|
| 30 Nov 2025 | £414K | £2,692 | £201K | 5 | |
| 30 Nov 2024 | £416K | £522K | £522K | £723K | 5 |
| 30 Nov 2023 | £541K | £571K | £821K | £294K | 3 |
| 30 Nov 2022 | £15K | £28K | £13K | 0 |
Where Insulation Wire Limited is registered
The registered office is in Slough (SL2), in the Slough local authority area, South East. Show SL2 5HR on a map.
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What happens if Insulation Wire 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 August 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Sep 2027 to 30 Sep 2027 | £150 |
| 1 to 3 months late | 1 Oct 2027 to 30 Nov 2027 | £375 |
| 3 to 6 months late | 1 Dec 2027 to 29 Feb 2028 | £750 |
| More than 6 months late | From 1 Mar 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Dec 2027 | £200 |
| 3 months late | 29 Feb 2028 | another £200 |
| 6 months late | 30 May 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Nov 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
- 13757838
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 22 November 2021 (4 years ago)
- Registered office
- 117 Shaggy Calf Lane, Slough, SL2 5HR
- Nature of business
- Development of building projects (SIC 41100)
Plumbing, heat and air-conditioning installation (SIC 43220) - Year end
- 30 November (accounting reference date)
- Accounts type
- Unaudited abridged
- Last accounts made up to
- 30 November 2025
- Last confirmation statement
- 21 November 2025
Filing notes for property development companies
Many property development companies are single-project vehicles. Stock of land and buildings sits on the balance sheet as work in progress until sale, and a company that has finished its project may become dormant rather than close.
Similar companies in Slough
Other active property development companies registered in Slough.
- Ista London Limited2024
- J C Homes Construction Limited2020
- J&T Ground Work and Roofing Ltd2025
- Jacd Property Ltd2026
- Jastech Construction Limited2014
- Jaya Constructions Ltd2025
- JBR Property Development Limited2025
- Jibrail Ltd2023
All property development companies in Slough · All trades in Slough · Property developers across the UK
Frequently asked questions
When are Insulation Wire Limited's accounts due?
Insulation Wire Limited's next accounts are due at Companies House by 31 August 2027 (in 322 days), covering the period to 30 November 2026.
When is Insulation Wire Limited's CT600 due?
The CT600 for the period to 30 November 2026 is due at HMRC by 30 November 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 September 2027.
Is Insulation Wire Limited still trading?
Insulation Wire 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 Insulation Wire Limited do?
Insulation Wire Limited is registered under Development of building projects (SIC 41100); Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Insulation Wire Limited?
Insulation Wire Limited was incorporated on 22 November 2021, 4 years ago.
What is the penalty if Insulation Wire 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 Insulation Wire 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.