- Companies
- Property developers
- London
- Serious Construction Limited
Serious Construction Limited
- Company number
- 11315331
- Incorporated
- 17 Apr 20188 years trading
- Registered office
- 128 Cannon Workshops, Cannon Drive, London, E14 4AS
- Nature of business
- Development of building projects; Construction of domestic buildings; Site preparation; Other building completion and finishing
Serious Construction Limited is a 8-year-old private limited company registered in London, company number 11315331, one of 14,100 property development companies in London. Its next accounts are due at Companies House on 31 January 2028, and the CT600 for the period to 30 April 2027 is due at HMRC on 30 April 2028.
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 £1,381 (+4.8%) on the year before, to -£27K.
- Net assets rose in 3 of 7 year-on-year comparisons on record.
- 2 employees on average during the year.
- Balance sheets on record for 8 years, 2019 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Apr 2026 | -£27K | £29K | £36K | 2 | |
| 30 Apr 2025 | -£29K | £5,879 | £8,871 | 2 | |
| 30 Apr 2024 | -£37K | £8,660 | £19K | 2 | |
| 30 Apr 2023 | £15K | £3,456 | £1,806 | 2 | |
| 30 Apr 2022 | £26K | £1,090 | £4,338 | 2 | |
| 30 Apr 2021 | £26K | £34K | £47K | 2 | |
| 30 Apr 2020 | £25 | £4,023 | £4,023 | £14K | 2 |
| 30 Apr 2019 | £5,029 | £3,069 | £4,605 |
Where Serious Construction Limited is registered
The registered office is in London (E14), in the Tower Hamlets local authority area, London. Show E14 4AS on a map.
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Also registered at this address
12 other companies use the same registered office as Serious Construction Limited.
- Abcroft Interiors LimitedPlumbers and heating engineers
- Abcroft Swallow LimitedPlumbers and heating engineers
- Adventium LimitedProperty developers
- CWT Advisory LtdSpecialist contractors
- Erc London LtdFacilities management
- Floor Electric LimitedBuilders
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- SQ2 Group LtdSpecialist contractors
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What happens if Serious Construction 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 January 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Feb 2028 to 29 Feb 2028 | £150 |
| 1 to 3 months late | 1 Mar 2028 to 30 Apr 2028 | £375 |
| 3 to 6 months late | 1 May 2028 to 31 Jul 2028 | £750 |
| More than 6 months late | From 1 Aug 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 May 2028 | £200 |
| 3 months late | 30 Jul 2028 | another £200 |
| 6 months late | 30 Oct 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Apr 2029 | 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
- 11315331
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 17 April 2018 (8 years ago)
- Registered office
- 128 Cannon Workshops, Cannon Drive, London, E14 4AS
- Nature of business
- Development of building projects (SIC 41100)
Construction of domestic buildings (SIC 41202)
Site preparation (SIC 43120)
Other building completion and finishing (SIC 43390) - Year end
- 30 April (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 April 2026
- Last confirmation statement
- 30 January 2026
Filing notes for property development companies
Many property development companies are single-project vehicles. Stock of land and buildings sits on the balance sheet as work in progress until sale, and a company that has finished its project may become dormant rather than close.
Similar companies in London
Other active property development companies registered in London.
- Sescenti Ltd2026
- Setbray Properties Limited1980
- Sev81 Ltd.2019
- Seven Capital (Basingstoke) Ltd2016
- Seven Capital (GC) Limited2015
- Seven Capital (NBP) Ltd2016
- Seven Capital (ST. Martins) Ltd2018
- Seven Islands Mount Anvil Limited2025
All property development companies in London · All trades in London · Property developers across the UK
Frequently asked questions
When are Serious Construction Limited's accounts due?
Serious Construction Limited's next accounts are due at Companies House by 31 January 2028 (in 476 days), covering the period to 30 April 2027.
When is Serious Construction Limited's CT600 due?
The CT600 for the period to 30 April 2027 is due at HMRC by 30 April 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 February 2028.
Is Serious Construction Limited still trading?
Serious Construction 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 Serious Construction Limited do?
Serious Construction Limited is registered under Development of building projects (SIC 41100); Construction of domestic buildings (SIC 41202); Site preparation (SIC 43120); Other building completion and finishing (SIC 43390).
How old is Serious Construction Limited?
Serious Construction Limited was incorporated on 17 April 2018, 8 years ago.
What is the penalty if Serious Construction 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 Serious Construction 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.