- Company number
- 06349274
- Incorporated
- 21 Aug 200719 years trading
- Registered office
- 26 Alice Fold, Ulverston, Cumbria, LA12 9TD
- Nature of business
- Glazing
Diamond Windows & Doors Limited is a 19-year-old private limited company registered in Ulverston, company number 06349274, one of the UK's glazing companies. Its next accounts are due at Companies House on 27 January 2027, and the CT600 for the period to 27 April 2026 is due at HMRC on 27 April 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 up £38 (+67.9%) on the year before, to £94.
- Net assets rose in 4 of 9 year-on-year comparisons on record.
- Current assets of £28K against £31K owed within a year: 0.9 times cover.
- 1 employee on average during the year.
- 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 |
|---|---|---|---|---|---|
| 27 Apr 2025 | £94 | £28K | £31K | 1 | |
| 27 Apr 2024 | £56 | £21K | £26K | 1 | |
| 27 Apr 2023 | £69 | £25K | £30K | 1 | |
| 27 Apr 2022 | £157 | £39K | £45K | 1 | |
| 27 Apr 2021 | £60 | £39K | £47K | 1 | |
| 27 Apr 2020 | £21K | £66K | £54K | 1 | |
| 27 Apr 2019 | £658 | £43K | £44K | ||
| 27 Apr 2018 | £9 | £36K | £38K | ||
| 27 Apr 2017 | £654 | £19K | £21K | ||
| 28 Apr 2016 | £4,614 | £17K | £15K |
Where Diamond Windows & Doors Limited is registered
The registered office is in Ulverston (LA12), in the Westmorland and Furness local authority area, North West. Show LA12 9TD on a map.
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What happens if Diamond Windows & Doors 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 27 January 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 28 Jan 2027 to 27 Feb 2027 | £150 |
| 1 to 3 months late | 28 Feb 2027 to 27 Apr 2027 | £375 |
| 3 to 6 months late | 28 Apr 2027 to 27 Jul 2027 | £750 |
| More than 6 months late | From 28 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 28 Apr 2027 | £200 |
| 3 months late | 27 Jul 2027 | another £200 |
| 6 months late | 27 Oct 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 27 Apr 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
- 06349274
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 21 August 2007 (19 years ago)
- Registered office
- 26 Alice Fold, Ulverston, Cumbria, LA12 9TD
- Nature of business
- Glazing (SIC 43342)
- Year end
- 27 April (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 27 April 2025
- Last confirmation statement
- 21 August 2026
- Previous names
- Derringhall Ltd (until 10 Sep 2007)
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 Ulverston
Other active glazing companies registered in Ulverston.
- U Win Limited2003
All glazing companies in Ulverston · All trades in Ulverston · Glaziers across the UK
Frequently asked questions
When are Diamond Windows & Doors Limited's accounts due?
Diamond Windows & Doors Limited's next accounts are due at Companies House by 27 January 2027 (in 106 days), covering the period to 27 April 2026.
When is Diamond Windows & Doors Limited's CT600 due?
The CT600 for the period to 27 April 2026 is due at HMRC by 27 April 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 28 January 2027.
Is Diamond Windows & Doors Limited still trading?
Diamond Windows & Doors 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 Diamond Windows & Doors Limited do?
Diamond Windows & Doors Limited is registered under Glazing (SIC 43342).
How old is Diamond Windows & Doors Limited?
Diamond Windows & Doors Limited was incorporated on 21 August 2007, 19 years ago.
What is the penalty if Diamond Windows & Doors 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 Diamond Windows & Doors 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.