- Companies
- Joiners and carpenters
- London
- LDN Sash Window Co Ltd
LDN Sash Window Co Ltd
- Company number
- 12789102
- Incorporated
- 3 Aug 20206 years trading
- Registered office
- 43 Fairfield Street, London, SW18 1DX
- Nature of business
- Joinery installation
LDN Sash Window Co Ltd is a 6-year-old private limited company registered in London, company number 12789102, one of 692 joinery companies in London. Its next accounts are due at Companies House on 31 May 2027, and the CT600 for the period to 31 August 2026 is due at HMRC on 31 August 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 £4,310 (+26.9%) on the year before, to -£12K.
- Net assets rose in 2 of 4 year-on-year comparisons on record.
- Current assets of £24K against £39K owed within a year: 0.6 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 5 years, 2021 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Aug 2025 | -£12K | £21K | £24K | £39K | 2 |
| 31 Aug 2024 | -£16K | £9,149 | £9,149 | £30K | 2 |
| 31 Aug 2023 | £40K | £83K | £87K | £47K | 2 |
| 31 Aug 2022 | £66K | £129K | £129K | £68K | 2 |
| 31 Aug 2021 | £2,839 | £26K | £29K | £1,975 | 1 |
Where LDN Sash Window Co Ltd is registered
The registered office is in London (SW18), in the Wandsworth local authority area, London. Show SW18 1DX on a map.
Other trade companies in SW18
- Altius 24CHT LimitedProperty developers
- Nexlink Technologies LtdElectricians
- Straightedge Builders LtdProperty developers
- Parsons Green Re Design & Build LimitedProperty developers
- Home Appliances Repair LimitedRepair services
- 34 & 34A Lambrook Terrace Freehold LtdProperty developers
- 30 Thorndean LtdProperty developers
- Fircroft Group LimitedProperty developers
What happens if LDN Sash Window Co 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 May 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jun 2027 to 30 Jun 2027 | £150 |
| 1 to 3 months late | 1 Jul 2027 to 31 Aug 2027 | £375 |
| 3 to 6 months late | 1 Sep 2027 to 30 Nov 2027 | £750 |
| More than 6 months late | From 1 Dec 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2027 | £200 |
| 3 months late | 30 Nov 2027 | another £200 |
| 6 months late | 29 Feb 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 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
- 12789102
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 3 August 2020 (6 years ago)
- Registered office
- 43 Fairfield Street, London, SW18 1DX
- Nature of business
- Joinery installation (SIC 43320)
- Year end
- 31 August (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 August 2025
- Last confirmation statement
- 5 August 2026
Filing notes for joinery companies
Joinery companies can carry stock and work in progress at the year end, especially bespoke workshop work, and that figure moves the profit for the year.
Similar companies in London
Other active joinery companies registered in London.
- Legacy Sash Windows Ltd2021
- Leibels Maintenance Ltd2024
- Leo&Co Ltd2026
- Leonardo Bespoke Joinery Ltd2026
- Lighthouse Engineering Limited2002
- Living Wood Contractors Ltd2012
- Liviu & Mi Ltd2025
- LNR Joinery & Carpentry Ltd2022
All joinery companies in London · All trades in London · Joiners and carpenters across the UK
Frequently asked questions
When are LDN Sash Window Co Ltd's accounts due?
LDN Sash Window Co Ltd's next accounts are due at Companies House by 31 May 2027 (in 230 days), covering the period to 31 August 2026.
When is LDN Sash Window Co Ltd's CT600 due?
The CT600 for the period to 31 August 2026 is due at HMRC by 31 August 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 June 2027.
Is LDN Sash Window Co Ltd still trading?
LDN Sash Window Co 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 LDN Sash Window Co Ltd do?
LDN Sash Window Co Ltd is registered under Joinery installation (SIC 43320).
How old is LDN Sash Window Co Ltd?
LDN Sash Window Co Ltd was incorporated on 3 August 2020, 6 years ago.
What is the penalty if LDN Sash Window Co 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 LDN Sash Window Co 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.