- Companies
- Builders
- Portsmouth
- A.T. Construction Services Limited
A.T. Construction Services Limited
- Company number
- 06051443
- Incorporated
- 12 Jan 200719 years trading
- Registered office
- 61 Randolph Road, North End, Portsmouth, Hampshire, PO2 0SU
- Nature of business
- Construction of commercial buildings
A.T. Construction Services Limited is a 19-year-old private limited company registered in Portsmouth, company number 06051443, one of 175 building contractors in Portsmouth. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 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 £154 (+0.6%) on the year before, to £27K.
- Net assets rose in 8 of 9 year-on-year comparisons on record.
- Current assets of £30K against £8,076 owed within a year: 3.7 times cover.
- 1 employee 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 Mar 2025 | £27K | £30K | £8,076 | 1 | |
| 31 Mar 2024 | £27K | £28K | £6,354 | 1 | |
| 31 Mar 2023 | £23K | £24K | £6,366 | 1 | |
| 31 Mar 2022 | £19K | £21K | £6,266 | 1 | |
| 31 Mar 2021 | £17K | £19K | £5,969 | 1 | |
| 31 Mar 2020 | £14K | £18K | £9,310 | 1 | |
| 31 Mar 2019 | £14K | £16K | £7,721 | ||
| 31 Mar 2018 | £14K | £14K | £6,418 | ||
| 31 Mar 2017 | £10K | £11K | £7,565 | ||
| 31 Mar 2016 | £4,169 | £3,408 | £8,559 | £4,691 |
Where A.T. Construction Services Limited is registered
The registered office is in Portsmouth (PO2), in the Portsmouth local authority area, South East. Show PO2 0SU on a map.
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What happens if A.T. Construction Services 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 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 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 | 1 Apr 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 | 31 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
- 06051443
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 12 January 2007 (19 years ago)
- Registered office
- 61 Randolph Road, North End, Portsmouth, Hampshire, PO2 0SU
- Nature of business
- Construction of commercial buildings (SIC 41201)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 11 December 2025
Filing notes for building contractors
Building companies often run the Construction Industry Scheme as a contractor, a subcontractor or both. CIS deductions suffered during the year are set against the PAYE bill, and any unrecovered balance at the year end matters when the accounts are drawn up.
Similar companies in Portsmouth
Other active building contractors registered in Portsmouth.
- A1 Brickwork Limited2005
- Adcredo Construction Ltd2020
- Adson Construction Ltd2021
- Aitkins Interior Specialist Ltd2018
- Ajito Property Limited2025
- All Scope Construction Limited2025
- Andromeda Carpentry and Building Services Limited2004
- Arland Developments Limited2026
All building contractors in Portsmouth · All trades in Portsmouth · Builders across the UK
Frequently asked questions
When are A.T. Construction Services Limited's accounts due?
A.T. Construction Services Limited's next accounts are due at Companies House by 31 December 2026 (in 80 days), covering the period to 31 March 2026.
When is A.T. Construction Services Limited's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is A.T. Construction Services Limited still trading?
A.T. Construction Services 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 A.T. Construction Services Limited do?
A.T. Construction Services Limited is registered under Construction of commercial buildings (SIC 41201).
How old is A.T. Construction Services Limited?
A.T. Construction Services Limited was incorporated on 12 January 2007, 19 years ago.
What is the penalty if A.T. Construction Services 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 A.T. Construction Services 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.