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- Diamond Conservatories, Windows and Doors (Kettering) Ltd
Diamond Conservatories, Windows and Doors (Kettering) Ltd
- Company number
- 07143191
- Incorporated
- 2 Feb 201016 years trading
- Registered office
- 63 Broad Green, Wellingborough, Northamptonshire, NN8 4LQ
- Nature of business
- Other construction installation
Diamond Conservatories, Windows and Doors (Kettering) Ltd is a 16-year-old private limited company registered in Wellingborough, company number 07143191, one of 43 installation companies (insulation, lifts, shutters and similar) in Wellingborough. Its next accounts are due at Companies House on 30 November 2026, and the CT600 for the period to 28 February 2026 is due at HMRC on 28 February 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 £4,508 (-16%) on the year before, to £24K.
- Net assets rose in 6 of 9 year-on-year comparisons on record.
- 2 employees 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 |
|---|---|---|---|---|---|
| 28 Feb 2025 | £24K | £49K | £25K | 2 | |
| 29 Feb 2024 | £28K | £62K | £30K | 2 | |
| 28 Feb 2023 | £18K | £47K | £21K | 2 | |
| 28 Feb 2022 | £28K | £60K | £64K | £23K | 2 |
| 28 Feb 2021 | £19K | £56K | £56K | £42K | 2 |
| 29 Feb 2020 | £18K | £20K | £21K | £11K | 0 |
| 28 Feb 2019 | £17K | £34K | £21K | 2 | |
| 28 Feb 2018 | £15K | £22K | £11K | 2 | |
| 28 Feb 2017 | £21K | £32K | £17K | 2 | |
| 29 Feb 2016 | £2,872 | £18K | £20K |
Where Diamond Conservatories, Windows and Doors (Kettering) Ltd is registered
The registered office is in Wellingborough (NN8), in the North Northamptonshire local authority area, East Midlands. Show NN8 4LQ on a map.
Other trade companies in NN8
- Coral Recovery LtdMechanics and garages
- Agolli Construction LtdCivil engineering
- Everyguard Property Maintenance LtdBuilders
- Phoenix Exterior Cleaning LtdCleaning companies
- Richservices11 LtdBuilders
- D A Paving LtdFinishing trades
- Id Construction and Renovation Services LtdBuilders
- LS Roofing LtdRoofers
Also registered at this address
18 other companies use the same registered office as Diamond Conservatories, Windows and Doors (Kettering) Ltd.
- 123 Property Development LtdProperty developers
- Aqua Access LimitedPlumbers and heating engineers
- Astromount Developments LimitedProperty developers
- Birley Homes LimitedBuilders
- Brook Farm Investments LtdProperty developers
- Credit Sureties Company LimitedProperty developers
- D K Floors LimitedFloor and wall tilers
- Grainfold LimitedProperty developers
- High Street Properties (Wellingborough) LimitedProperty developers
- JPS Autocentre LimitedMechanics and garages
- Lexicus Developments LimitedProperty developers
- Manus Estates LimitedBuilders
- Nene Vale Motor Company LimitedMotor traders
- Nine Arch Marine Solutions LimitedSpecialist contractors
- Property Clean Solutions LtdCleaning companies
- Robotix Automation LimitedMachinery repair and installation
- Solairis LimitedPlumbers and heating engineers
- Wellingborough Building Company LimitedBuilders
What happens if Diamond Conservatories, Windows and Doors (Kettering) 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 November 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Dec 2026 to 31 Dec 2026 | £150 |
| 1 to 3 months late | 1 Jan 2027 to 28 Feb 2027 | £375 |
| 3 to 6 months late | 1 Mar 2027 to 31 May 2027 | £750 |
| More than 6 months late | From 1 Jun 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Mar 2027 | £200 |
| 3 months late | 28 May 2027 | another £200 |
| 6 months late | 28 Aug 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Feb 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
- 07143191
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 2 February 2010 (16 years ago)
- Registered office
- 63 Broad Green, Wellingborough, Northamptonshire, NN8 4LQ
- Nature of business
- Other construction installation (SIC 43290)
- Year end
- 28 February (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 28 February 2025
- Last confirmation statement
- 2 February 2026
Filing notes for installation companies (insulation, lifts, shutters and similar)
Installation companies (insulation, lifts, shutters, solar and similar) often buy stock and equipment up front, so stock at the year end and capital allowances both affect the tax bill.
Similar companies in Wellingborough
Other active installation companies (insulation, lifts, shutters and similar) registered in Wellingborough.
- DLW Property Management Limited2022
- Easy Screedy Ltd2025
- Edspace Ltd2013
- Electric Gate Centre Limited1991
- Feniks Utilities Limited2021
- FK Restoration Limited2000
- GDF Contracts Limited2026
- GDF Roofing Limited2020
All installation companies (insulation, lifts, shutters and similar) in Wellingborough · All trades in Wellingborough · Installers across the UK
Frequently asked questions
When are Diamond Conservatories, Windows and Doors (Kettering) Ltd's accounts due?
Diamond Conservatories, Windows and Doors (Kettering) Ltd's next accounts are due at Companies House by 30 November 2026 (in 48 days), covering the period to 28 February 2026.
When is Diamond Conservatories, Windows and Doors (Kettering) Ltd's CT600 due?
The CT600 for the period to 28 February 2026 is due at HMRC by 28 February 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 December 2026.
Is Diamond Conservatories, Windows and Doors (Kettering) Ltd still trading?
Diamond Conservatories, Windows and Doors (Kettering) 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 Diamond Conservatories, Windows and Doors (Kettering) Ltd do?
Diamond Conservatories, Windows and Doors (Kettering) Ltd is registered under Other construction installation (SIC 43290).
How old is Diamond Conservatories, Windows and Doors (Kettering) Ltd?
Diamond Conservatories, Windows and Doors (Kettering) Ltd was incorporated on 2 February 2010, 16 years ago.
What is the penalty if Diamond Conservatories, Windows and Doors (Kettering) 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 Diamond Conservatories, Windows and Doors (Kettering) 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.