- Companies
- Civil engineering
- Swansea
- Atr Construction Ltd
Atr Construction Ltd
- Company number
- 13290062
- Incorporated
- 24 Mar 20215 years trading
- Registered office
- 25 Heol Cledwyn, Birchgrove, Swansea, SA7 9LE
- Nature of business
- Construction of other civil engineering projects n.e.c.
Atr Construction Ltd is a 5-year-old private limited company registered in Swansea, company number 13290062, one of 71 civil engineering contractors in Swansea. Its next accounts are due at Companies House on 30 December 2026, and the CT600 for the period to 30 March 2026 is due at HMRC on 30 March 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 £1,893 (+96.6%) on the year before, to £3,852.
- Net assets rose in 3 of 4 year-on-year comparisons on record.
- Current assets of £6,382 against £2,530 owed within a year: 2.5 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 5 years, 2022 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £3,852 | £4,873 | £6,382 | £2,530 | 1 |
| 31 Mar 2024 | £1,959 | £4,044 | £2,085 | 1 | |
| 31 Mar 2023 | £48 | £2,964 | £2,196 | 1 | |
| 30 Mar 2023 | £48 | £2,964 | £2,196 | 2 | |
| 31 Mar 2022 | £14 | £2,860 | £2,846 | 2 |
Where Atr Construction Ltd is registered
The registered office is in Swansea (SA7), in the Swansea local authority area, Wales. Show SA7 9LE on a map.
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Also registered at this address
1 other company uses the same registered office as Atr Construction Ltd.
- Atr Property Services LtdFinishing trades
What happens if Atr Construction 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 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 31 Dec 2026 to 30 Jan 2027 | £150 |
| 1 to 3 months late | 31 Jan 2027 to 30 Mar 2027 | £375 |
| 3 to 6 months late | 31 Mar 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 31 Mar 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Mar 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
- 13290062
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 24 March 2021 (5 years ago)
- Registered office
- 25 Heol Cledwyn, Birchgrove, Swansea, SA7 9LE
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
- Year end
- 30 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 23 March 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 Swansea
Other active civil engineering contractors registered in Swansea.
- Avarix Highways Engineering Limited2025
- Avarix Limited2025
- B.E.A. Jones Ltd2003
- Beacons Electrical Engineering Ltd2016
- Beauden B Rail Ltd2023
- Benn Engineering Ltd2019
- Bisp Civil Engineering Ltd2020
- C C M Wields Ltd2023
All civil engineering contractors in Swansea · All trades in Swansea · Civil engineering across the UK
Frequently asked questions
When are Atr Construction Ltd's accounts due?
Atr Construction Ltd's next accounts are due at Companies House by 30 December 2026 (in 78 days), covering the period to 30 March 2026.
When is Atr Construction Ltd's CT600 due?
The CT600 for the period to 30 March 2026 is due at HMRC by 30 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 31 December 2026.
Is Atr Construction Ltd still trading?
Atr Construction 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 Atr Construction Ltd do?
Atr Construction Ltd is registered under Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is Atr Construction Ltd?
Atr Construction Ltd was incorporated on 24 March 2021, 5 years ago.
What is the penalty if Atr Construction 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 Atr Construction 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.