- Company number
- 10038290
- Incorporated
- 2 Mar 201610 years trading
- Registered office
- 1B Station Road, Maldon, CM9 4LQ
- Nature of business
- Glazing
Diamond Windows and Conservatories Limited is a 10-year-old private limited company registered in Maldon, company number 10038290, one of 16 glazing companies in Maldon. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 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 £145K (-25.8%) on the year before, to £417K.
- Net assets rose in 5 of 8 year-on-year comparisons on record.
- Current assets of £653K against £274K owed within a year: 2.4 times cover.
- 6 employees on average during the year.
- Balance sheets on record for 9 years, 2017 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £417K | £463K | £653K | £274K | 6 |
| 31 Mar 2024 | £562K | £648K | £801K | £284K | 6 |
| 31 Mar 2023 | £380K | £456K | £657K | £301K | 8 |
| 31 Mar 2022 | £332K | £378K | £633K | £333K | 7 |
| 31 Mar 2021 | £439K | £451K | £630K | £195K | 10 |
| 31 Mar 2020 | £497K | £393K | £623K | £175K | 7 |
| 31 Mar 2019 | £339K | £281K | £452K | £174K | |
| 31 Mar 2018 | £193K | £131K | £272K | £151K | |
| 31 Mar 2017 | £98K | £131K | £275K | £215K |
Where Diamond Windows and Conservatories Limited is registered
The registered office is in Maldon (CM9), in the Maldon local authority area, East of England. Show CM9 4LQ on a map.
Other trade companies in CM9
- Rose Prestige Automotive LimitedMotor traders
- S&B Restoration LtdFinishing trades
- Ojf Air LimitedPlumbers and heating engineers
- Eluvis (Boston) LtdProperty developers
- Maldon Electrical LtdElectricians
- Eluvis Dover LtdProperty developers
- Eluvis Peasmarsh LtdProperty developers
- Rubberworx Safety Surfacing LtdGroundworks and demolition
What happens if Diamond Windows and Conservatories 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 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 10038290
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 2 March 2016 (10 years ago)
- Registered office
- 1B Station Road, Maldon, CM9 4LQ
- Nature of business
- Glazing (SIC 43342)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 2 June 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 Maldon
Other active glazing companies registered in Maldon.
- Glazing Solutions Essex Limited2025
- Harrella Glazing Solutions Limited2016
- Henkal Ltd2018
- I & A Windows and Conservatories Limited2014
- Image Windows & Doors (Essex) Limited2018
- Maldon Rapid Repair Ltd2026
- Neil Davis Glass Limited2007
- Pelsall Windows and Glass Ltd2007
All glazing companies in Maldon · All trades in Maldon · Glaziers across the UK
Frequently asked questions
When are Diamond Windows and Conservatories Limited's accounts due?
Diamond Windows and Conservatories Limited's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is Diamond Windows and Conservatories Limited's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is Diamond Windows and Conservatories Limited still trading?
Diamond Windows and Conservatories 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 and Conservatories Limited do?
Diamond Windows and Conservatories Limited is registered under Glazing (SIC 43342).
How old is Diamond Windows and Conservatories Limited?
Diamond Windows and Conservatories Limited was incorporated on 2 March 2016, 10 years ago.
What is the penalty if Diamond Windows and Conservatories 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 and Conservatories 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.