- Companies
- Glaziers
- Chadwell Heath
- Window Wize Energy & Conservation Limited
Window Wize Energy & Conservation Limited
- Company number
- 03606190
- Incorporated
- 29 Jul 199828 years trading
- Registered office
- Office 6562, 321-323 High Road, Chadwell Heath, RM6 6AX
- Nature of business
- Glazing
Window Wize Energy & Conservation Limited is a 28-year-old private limited company registered in Chadwell Heath, company number 03606190, one of the UK's glazing companies. Its next accounts are due at Companies House on 31 May 2027, and the CT600 for the period to 31 August 2026 is due at HMRC on 31 August 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 £5,002 (-61.3%) on the year before, to £3,157.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- Current assets of £45K against £59K owed within a year: 0.7 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Aug 2025 | £3,157 | £45K | £59K | 0 | |
| 31 Aug 2024 | £8,159 | £18K | £62K | 1 | |
| 31 Aug 2023 | £1,927 | £5,267 | £55K | 1 | |
| 31 Aug 2022 | £51K | £75K | £54K | 1 | |
| 31 Aug 2021 | -£35K | £17K | £26K | 3 | |
| 31 Aug 2020 | £17K | £59K | £17K | 3 | |
| 31 Aug 2019 | -£23K | £1,743 | £5,815 | 3 | |
| 31 Aug 2018 | £23K | £1,743 | £5,815 | ||
| 31 Aug 2017 | -£22K | £1,000 | £8,479 | ||
| 31 Aug 2016 | -£27K | £1,000 | £12K |
Where Window Wize Energy & Conservation Limited is registered
The registered office is in Chadwell Heath (RM6), in the Barking and Dagenham local authority area, London. Show RM6 6AX on a map.
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What happens if Window Wize Energy & Conservation 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 May 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jun 2027 to 30 Jun 2027 | £150 |
| 1 to 3 months late | 1 Jul 2027 to 31 Aug 2027 | £375 |
| 3 to 6 months late | 1 Sep 2027 to 30 Nov 2027 | £750 |
| More than 6 months late | From 1 Dec 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2027 | £200 |
| 3 months late | 30 Nov 2027 | another £200 |
| 6 months late | 29 Feb 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 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
- 03606190
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 29 July 1998 (28 years ago)
- Registered office
- Office 6562, 321-323 High Road, Chadwell Heath, RM6 6AX
- Nature of business
- Glazing (SIC 43342)
- Year end
- 31 August (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 August 2025
- Last confirmation statement
- 25 July 2026
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 Chadwell Heath
Other active glazing companies registered in Chadwell Heath.
- Fenstrox Ltd2026
All glazing companies in Chadwell Heath · All trades in Chadwell Heath · Glaziers across the UK
Frequently asked questions
When are Window Wize Energy & Conservation Limited's accounts due?
Window Wize Energy & Conservation Limited's next accounts are due at Companies House by 31 May 2027 (in 230 days), covering the period to 31 August 2026.
When is Window Wize Energy & Conservation Limited's CT600 due?
The CT600 for the period to 31 August 2026 is due at HMRC by 31 August 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 June 2027.
Is Window Wize Energy & Conservation Limited still trading?
Window Wize Energy & Conservation 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 Wize Energy & Conservation Limited do?
Window Wize Energy & Conservation Limited is registered under Glazing (SIC 43342).
How old is Window Wize Energy & Conservation Limited?
Window Wize Energy & Conservation Limited was incorporated on 29 July 1998, 28 years ago.
What is the penalty if Window Wize Energy & Conservation 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 Wize Energy & Conservation 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.