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- S.E.D. Construction & Engineering Ltd
Company profile · Civil engineering
S.E.D. Construction & Engineering Ltd
S.E.D. Construction & Engineering Ltd is a 12-year-old private limited company registered in London, company number 09079470, one of 1,853 civil engineering contractors in London. Its next accounts are due at Companies House on 30 April 2027, and the CT600 for the period to 31 July 2026 is due at HMRC on 31 July 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2025
From the balance sheet at 31 July 2025, as filed at Companies House. Negative net assets mean the company owed more than it owned at that date.
S.E.D. Construction & Engineering Ltd over the years
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 £656 (-452.4%) on the year before, to -£511.
- Net assets rose in 4 of 9 year-on-year comparisons on record.
- Current assets of £47K against £25K owed within a year: 1.9 times cover.
- 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 |
|---|---|---|---|---|---|
| 31 Jul 2025 | -£511 | £178 | £47K | £25K | 2 |
| 31 Jul 2024 | £145 | £7,396 | £52K | £23K | 2 |
| 31 Jul 2023 | £249 | £21K | £56K | £20K | 1 |
| 31 Jul 2022 | £1,964 | £4,947 | £59K | £17K | 2 |
| 31 Jul 2021 | £206 | £3,206 | £65K | £26K | 2 |
| 31 Jul 2020 | £11K | £9,538 | £44K | £22K | 2 |
| 31 Jul 2019 | £2,608 | £5,314 | £48K | £20K | |
| 31 Jul 2018 | £508 | £3,223 | £66K | £28K | 2 |
| 31 Jul 2017 | £8,156 | £83K | £84K | £24K | 1 |
| 30 Jun 2016 | £398 | £811 | £7,380 | £7,460 |
Where S.E.D. Construction & Engineering Ltd is registered
The registered office is in London (N11), in the Barnet local authority area, London. Show N11 3NJ on a map.
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What happens if S.E.D. Construction & Engineering 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 April 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 May 2027 to 31 May 2027 | £150 |
| 1 to 3 months late | 1 Jun 2027 to 31 Jul 2027 | £375 |
| 3 to 6 months late | 1 Aug 2027 to 31 Oct 2027 | £750 |
| More than 6 months late | From 1 Nov 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2027 | £200 |
| 3 months late | 31 Oct 2027 | another £200 |
| 6 months late | 31 Jan 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jul 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
- 09079470
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 10 June 2014 (12 years ago)
- Registered office
- 63 Poplar Grove, Poplar Grove, London, N11 3NJ
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
- Year end
- 31 July (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 July 2025
- Last confirmation statement
- 10 June 2026
- Previous names
- S.E.D. Recruit Ltd (until 5 Jun 2025)
Filing notes for civil engineering contractors
Civil engineering contractors usually carry plant and machinery, so capital allowances (the annual investment allowance and the main pool) do much of the work in the corporation tax computation.
Similar companies in London
Other active civil engineering contractors registered in London.
- S.Mumuni Ltd2015
- S2D Joinery and Building Services Ltd2019
- Sa.Ing Ltd2013
- Sacs Cons Ltd2025
- Saeng Services Ltd2023
- Safelane Ltd2019
- Sagewood Limited1987
- Sai Ak Construction Limited2022
All civil engineering contractors in London · All trades in London · Civil engineering across the UK
Frequently asked questions
When are S.E.D. Construction & Engineering Ltd's accounts due?
S.E.D. Construction & Engineering Ltd's next accounts are due at Companies House by 30 April 2027 (in 200 days), covering the period to 31 July 2026.
When is S.E.D. Construction & Engineering Ltd's CT600 due?
The CT600 for the period to 31 July 2026 is due at HMRC by 31 July 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 May 2027.
Is S.E.D. Construction & Engineering Ltd still trading?
S.E.D. Construction & Engineering 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 S.E.D. Construction & Engineering Ltd do?
S.E.D. Construction & Engineering Ltd is registered under Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is S.E.D. Construction & Engineering Ltd?
S.E.D. Construction & Engineering Ltd was incorporated on 10 June 2014, 12 years ago.
What is the penalty if S.E.D. Construction & Engineering 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 S.E.D. Construction & Engineering Ltd on Companies House for filed documents, officers and the full history.
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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.