- Company number
- 16111279
- Incorporated
- 1 Dec 20241 year trading
- Registered office
- 24 Piltdown Road, Watford, WD19 6LD
- Nature of business
- Glazing
Design Windows System Ltd is a 1-year-old private limited company registered in Watford, company number 16111279, one of 15 glazing companies in Watford. Its next accounts are due at Companies House on 30 September 2027, and the CT600 for the period to 31 December 2026 is due at HMRC on 31 December 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2025
From the balance sheet at 31 December 2025, as filed at Companies House.
Where Design Windows System Ltd is registered
The registered office is in Watford (WD19), in the Three Rivers local authority area, East of England. Show WD19 6LD on a map.
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- Scenic Plasterwork’S LtdPlasterers
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- Synclyst LtdCleaning companies
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Also registered at this address
2 other companies use the same registered office as Design Windows System Ltd.
- Doormates LtdInstallers
- Sunray TK LimitedLandscapers and gardeners
What happens if Design Windows System 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 30 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2027 to 31 Oct 2027 | £150 |
| 1 to 3 months late | 1 Nov 2027 to 31 Dec 2027 | £375 |
| 3 to 6 months late | 1 Jan 2028 to 31 Mar 2028 | £750 |
| More than 6 months late | From 1 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2028 | £200 |
| 3 months late | 31 Mar 2028 | another £200 |
| 6 months late | 30 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 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
- 16111279
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 1 December 2024 (1 year ago)
- Registered office
- 24 Piltdown Road, Watford, WD19 6LD
- Nature of business
- Glazing (SIC 43342)
- Year end
- 31 December (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 30 November 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 Watford
Other active glazing companies registered in Watford.
- Et Double Glazing Ltd2026
- Finepoint Glass London Ltd2013
- Glass Genius Ltd2022
- Glen Windows and Doors Limited1991
- H & J Merchants Ltd2018
- Harp Windows (Watford) Limited1989
- Kingswood Specialist Glazing Limited2009
- London Sma Ltd2024
All glazing companies in Watford · All trades in Watford · Glaziers across the UK
Frequently asked questions
When are Design Windows System Ltd's accounts due?
Design Windows System Ltd's next accounts are due at Companies House by 30 September 2027 (in 352 days), covering the period to 31 December 2026.
When is Design Windows System Ltd's CT600 due?
The CT600 for the period to 31 December 2026 is due at HMRC by 31 December 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2027.
Is Design Windows System Ltd still trading?
Design Windows System 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 Design Windows System Ltd do?
Design Windows System Ltd is registered under Glazing (SIC 43342).
How old is Design Windows System Ltd?
Design Windows System Ltd was incorporated on 1 December 2024, 1 year ago.
What is the penalty if Design Windows System 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 Design Windows System 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.