- Companies
- Civil engineering
- Bristol
- SD Offshore Wind Ltd
SD Offshore Wind Ltd
- Company number
- 15137562
- Incorporated
- 13 Sep 20233 years trading
- Registered office
- 19 ST. Helena Road, Bristol, BS6 7NR
- Nature of business
- Construction of other civil engineering projects n.e.c.
SD Offshore Wind Ltd is a 3-year-old private limited company registered in Bristol, company number 15137562, one of 172 civil engineering contractors in Bristol. Its next accounts are due at Companies House on 30 June 2027, and the CT600 for the period to 30 September 2026 is due at HMRC on 30 September 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 £15K on the year before, to -£15K.
- Current assets of £12K against £28K owed within a year: 0.4 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- 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 Sep 2025 | -£15K | £8,000 | £12K | £28K | 0 |
| 30 Sep 2024 | £391 | £14K | £28K | £28K | 0 |
Where SD Offshore Wind Ltd is registered
The registered office is in Bristol (BS6), in the Bristol, City of local authority area, South West. Show BS6 7NR on a map.
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What happens if SD Offshore Wind 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 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jul 2027 to 31 Jul 2027 | £150 |
| 1 to 3 months late | 1 Aug 2027 to 30 Sep 2027 | £375 |
| 3 to 6 months late | 1 Oct 2027 to 31 Dec 2027 | £750 |
| More than 6 months late | From 1 Jan 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2027 | £200 |
| 3 months late | 30 Dec 2027 | another £200 |
| 6 months late | 30 Mar 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 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
- 15137562
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 13 September 2023 (3 years ago)
- Registered office
- 19 ST. Helena Road, Bristol, BS6 7NR
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
- Year end
- 30 September (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 September 2025
- Last confirmation statement
- 4 September 2026
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 Bristol
Other active civil engineering contractors registered in Bristol.
- Severn Civils Ltd2021
- Sharratt Engineering Limited2019
- Skene Marine Limited2022
- Smudge Building Developments Limited2002
- Sodbury Surfacing Ltd2025
- Somerset Resin Surfacing Limited2009
- Steve Hancock Ltd2020
- T K Building Company Limited2012
All civil engineering contractors in Bristol · All trades in Bristol · Civil engineering across the UK
Frequently asked questions
When are SD Offshore Wind Ltd's accounts due?
SD Offshore Wind Ltd's next accounts are due at Companies House by 30 June 2027 (in 260 days), covering the period to 30 September 2026.
When is SD Offshore Wind Ltd's CT600 due?
The CT600 for the period to 30 September 2026 is due at HMRC by 30 September 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 July 2027.
Is SD Offshore Wind Ltd still trading?
SD Offshore Wind 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 SD Offshore Wind Ltd do?
SD Offshore Wind Ltd is registered under Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is SD Offshore Wind Ltd?
SD Offshore Wind Ltd was incorporated on 13 September 2023, 3 years ago.
What is the penalty if SD Offshore Wind 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 SD Offshore Wind 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.