- Company number
- 03159852
- Incorporated
- 15 Feb 199630 years trading
- Registered office
- 12 Northfields Prospect, Putney Bridge Road, London, SW18 1PE
- Nature of business
- Construction of domestic buildings; Electrical installation
C. Aitken Builders Limited is a 30-year-old private limited company registered in London, company number 03159852, one of 12,075 building contractors in London. Its next accounts are due at Companies House on 27 November 2026, and the CT600 for the period to 27 February 2026 is due at HMRC on 27 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 up £56K (+20.6%) on the year before, to £325K.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- Current assets of £409K against £85K owed within a year: 4.8 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 10 years, 2017 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 28 Feb 2025 | £325K | £167K | £409K | £85K | 0 |
| 28 Feb 2024 | £269K | £114K | £302K | £33K | 3 |
| 28 Feb 2023 | £333K | £198K | £399K | £67K | 4 |
| 28 Feb 2022 | £251K | £53K | £300K | £50K | 4 |
| 27 Feb 2022 | £251K | £300K | £50K | 4 | |
| 28 Feb 2021 | £183K | £178K | £222K | £41K | 4 |
| 28 Feb 2020 | £61K | £73K | £82K | 3 | |
| 28 Feb 2019 | £47K | £36K | £36K | £5,902 | |
| 28 Feb 2018 | £84K | £84K | £92K | £14K | |
| 28 Feb 2017 | £241K | £288K | £292K | £59K |
Where C. Aitken Builders Limited is registered
The registered office is in London (SW18), in the Wandsworth local authority area, London. Show SW18 1PE 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
Shared registered office
27 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 C. Aitken Builders 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 November 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 28 Nov 2026 to 27 Dec 2026 | £150 |
| 1 to 3 months late | 28 Dec 2026 to 27 Feb 2027 | £375 |
| 3 to 6 months late | 28 Feb 2027 to 27 May 2027 | £750 |
| More than 6 months late | From 28 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 28 Feb 2027 | £200 |
| 3 months late | 27 May 2027 | another £200 |
| 6 months late | 27 Aug 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 27 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
- 03159852
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 15 February 1996 (30 years ago)
- Registered office
- 12 Northfields Prospect, Putney Bridge Road, London, SW18 1PE
- Nature of business
- Construction of domestic buildings (SIC 41202)
Electrical installation (SIC 43210) - Year end
- 27 February (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 28 February 2025
- Last confirmation statement
- 5 May 2026
Filing notes for building contractors
Building companies often run the Construction Industry Scheme as a contractor, a subcontractor or both. CIS deductions suffered during the year are set against the PAYE bill, and any unrecovered balance at the year end matters when the accounts are drawn up.
Similar companies in London
Other active building contractors registered in London.
- C. Morris Construction Ltd2026
- C.B Drylining Ltd2022
- C.B. Miller Developments Limited1982
- C.Fima Ventures Ltd2025
- C.O.O.R Services Ltd2025
- C.Riordan Construction Ltd2022
- C2891 Ltd2025
- Ca & Sons Maintenance Ltd2019
All building contractors in London · All trades in London · Builders across the UK
Frequently asked questions
When are C. Aitken Builders Limited's accounts due?
C. Aitken Builders Limited's next accounts are due at Companies House by 27 November 2026 (in 45 days), covering the period to 27 February 2026.
When is C. Aitken Builders Limited's CT600 due?
The CT600 for the period to 27 February 2026 is due at HMRC by 27 February 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 28 November 2026.
Is C. Aitken Builders Limited still trading?
C. Aitken Builders 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 C. Aitken Builders Limited do?
C. Aitken Builders Limited is registered under Construction of domestic buildings (SIC 41202); Electrical installation (SIC 43210).
How old is C. Aitken Builders Limited?
C. Aitken Builders Limited was incorporated on 15 February 1996, 30 years ago.
What is the penalty if C. Aitken Builders 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 C. Aitken Builders 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.