- Companies
- Civil engineering
- Southampton
- Boulton Composites Ltd
Boulton Composites Ltd
- Company number
- 12312633
- Incorporated
- 13 Nov 20196 years trading
- Registered office
- 25 Bowman Court, Butts RD, Southampton, SO19 1RD
- Nature of business
- Construction of other civil engineering projects n.e.c.; Other construction installation
Boulton Composites Ltd is a 6-year-old private limited company registered in Southampton, company number 12312633, one of 114 civil engineering contractors in Southampton. Its next accounts are due at Companies House on 31 August 2027, and the CT600 for the period to 30 November 2026 is due at HMRC on 30 November 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 unchanged on the year before, at £4,084.
- Net assets rose in 0 of 5 year-on-year comparisons on record.
- Current assets of £17K against £2,325 owed within a year: 7.3 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 6 years, 2020 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Nov 2025 | £4,084 | £17K | £2,325 | 1 | |
| 30 Nov 2024 | £4,084 | £17K | £2,325 | 1 | |
| 30 Nov 2023 | £4,084 | £17K | £2,325 | 1 | |
| 30 Nov 2022 | £4,084 | £17K | £2,325 | 0 | |
| 30 Nov 2021 | £4,084 | £17K | £2,325 | 1 | |
| 30 Nov 2020 | £4,817 | £22K | £5,872 | 1 |
Who runs and owns Boulton Composites Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (2)
| Name | Role | Appointed |
|---|---|---|
| S*** B*** | Director | Nov 2019 |
| S*** B*** | Secretary | Nov 2019 |
Person with significant control
Where Boulton Composites Ltd is registered
The registered office is in Southampton (SO19), in the Southampton local authority area, South East. Show SO19 1RD on a map.
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What happens if Boulton Composites 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 August 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Sep 2027 to 30 Sep 2027 | £150 |
| 1 to 3 months late | 1 Oct 2027 to 30 Nov 2027 | £375 |
| 3 to 6 months late | 1 Dec 2027 to 29 Feb 2028 | £750 |
| More than 6 months late | From 1 Mar 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Dec 2027 | £200 |
| 3 months late | 29 Feb 2028 | another £200 |
| 6 months late | 30 May 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Nov 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
- 12312633
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 13 November 2019 (6 years ago)
- Registered office
- 25 Bowman Court, Butts RD, Southampton, SO19 1RD
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
Other construction installation (SIC 43290) - Year end
- 30 November (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 November 2025
- Last confirmation statement
- 12 November 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 Southampton
Other active civil engineering contractors registered in Southampton.
- CJC Rails Ltd2021
- Currie and Partners Ltd2024
- D Beament Ltd2025
- D-Max Construction Ltd2016
- Da Groundworks & Construction Ltd2021
- Da Silva Construction Ltd2021
- DMS Landholdings Limited2017
- Duty Civil Engineering Ltd2026
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Frequently asked questions
When are Boulton Composites Ltd's accounts due?
Boulton Composites Ltd's next accounts are due at Companies House by 31 August 2027 (in 322 days), covering the period to 30 November 2026.
When is Boulton Composites Ltd's CT600 due?
The CT600 for the period to 30 November 2026 is due at HMRC by 30 November 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 September 2027.
Is Boulton Composites Ltd still trading?
Boulton Composites 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 Boulton Composites Ltd do?
Boulton Composites Ltd is registered under Construction of other civil engineering projects n.e.c. (SIC 42990); Other construction installation (SIC 43290).
How old is Boulton Composites Ltd?
Boulton Composites Ltd was incorporated on 13 November 2019, 6 years ago.
Who runs Boulton Composites Ltd?
Boulton Composites Ltd has 1 active director, the longest-serving appointed in Nov 2019. Their names and service addresses are on the Companies House register.
Who owns Boulton Composites Ltd?
One person or company has significant control of Boulton Composites Ltd: an individual (owns 75% or more of the shares).
What is the penalty if Boulton Composites 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 Boulton Composites 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.