- Companies
- Installers
- Darlington
- Alwyn Doors Ltd
Alwyn Doors Ltd
- Company number
- 15274129
- Incorporated
- 10 Nov 20232 years trading
- Registered office
- 73 Duke Street, Darlington, Co Durham, DL3 7SD
- Nature of business
- Other construction installation
Alwyn Doors Ltd is a 2-year-old private limited company registered in Darlington, company number 15274129, one of 41 installation companies (insulation, lifts, shutters and similar) in Darlington. Its next accounts are due at Companies House on 31 August 2027, and the CT600 for the period to 30 November 2026 is due at HMRC on 30 November 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 £1,470 (-97.4%) on the year before, to £40.
- Current assets of £18K against £36K owed within a year: 0.5 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 2 years, 2024 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Nov 2025 | £40 | £18K | £36K | 2 | |
| 30 Nov 2024 | £1,510 | £27K | £48K | 2 |
Where Alwyn Doors Ltd is registered
The registered office is in Darlington (DL3), in the Darlington local authority area, North East. Show DL3 7SD on a map.
Other trade companies in DL3
- Shine With Helen LtdCleaning companies
- RJB Consultants LtdInstallers
- Garry's Car Valeting LtdCleaning companies
- Go Elite Cleaning Services LtdCleaning companies
- BGP Property LtdProperty developers
- Frontier Energy Services LtdPlumbers and heating engineers
- Andrew Morgan Joinery LtdJoiners and carpenters
- Aburns Engineering LtdBuilders
Shared registered office
40 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if Alwyn Doors 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 31 August 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Sep 2027 to 30 Sep 2027 | £150 |
| 1 to 3 months late | 1 Oct 2027 to 30 Nov 2027 | £375 |
| 3 to 6 months late | 1 Dec 2027 to 29 Feb 2028 | £750 |
| More than 6 months late | From 1 Mar 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Dec 2027 | £200 |
| 3 months late | 29 Feb 2028 | another £200 |
| 6 months late | 30 May 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Nov 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
- 15274129
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 10 November 2023 (2 years ago)
- Registered office
- 73 Duke Street, Darlington, Co Durham, DL3 7SD
- Nature of business
- Other construction installation (SIC 43290)
- Year end
- 30 November (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 November 2025
- Last confirmation statement
- 14 November 2025
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 Darlington
Other active installation companies (insulation, lifts, shutters and similar) registered in Darlington.
- Avant Developments Ne Ltd2024
- BH Blinds & Shutters Ltd2024
- Borthwick Construction Limited2019
- Chris Banks Windows Ltd2003
- CM Site Services Ltd2023
- D B Site Services Limited1998
- Darlington Door Services Limited1999
- Dorserve Limited2008
All installation companies (insulation, lifts, shutters and similar) in Darlington · All trades in Darlington · Installers across the UK
Frequently asked questions
When are Alwyn Doors Ltd's accounts due?
Alwyn Doors Ltd's next accounts are due at Companies House by 31 August 2027 (in 322 days), covering the period to 30 November 2026.
When is Alwyn Doors Ltd's CT600 due?
The CT600 for the period to 30 November 2026 is due at HMRC by 30 November 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 September 2027.
Is Alwyn Doors Ltd still trading?
Alwyn Doors 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 Alwyn Doors Ltd do?
Alwyn Doors Ltd is registered under Other construction installation (SIC 43290).
How old is Alwyn Doors Ltd?
Alwyn Doors Ltd was incorporated on 10 November 2023, 2 years ago.
What is the penalty if Alwyn Doors 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 Alwyn Doors 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.