A One Builders & Merchants Ltd
- Company number
- 04158270
- Incorporated
- 12 Feb 200125 years trading
- Registered office
- 36A Middlegreen Road, Langley Slough, Berkshire, SL3 7BW
- Nature of business
- Construction of domestic buildings
A One Builders & Merchants Ltd is a 25-year-old private limited company registered in Berkshire, company number 04158270, one of the UK's building contractors. Its next accounts are due at Companies House on 30 November 2026, and the CT600 for the period to 28 February 2026 is due at HMRC on 28 February 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 £1,428 (-5.4%) on the year before, to £25K.
- Net assets rose in 2 of 9 year-on-year comparisons on record.
- Current assets of £73K against £72K owed within a year: 1.0 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 |
|---|---|---|---|---|---|
| 28 Feb 2025 | £25K | £73K | £72K | 1 | |
| 28 Feb 2024 | £26K | £88K | £82K | 1 | |
| 28 Feb 2023 | £47K | £86K | £95K | 1 | |
| 28 Feb 2022 | £52K | £88K | £96K | 1 | |
| 28 Feb 2021 | £53K | £99K | £102K | 2 | |
| 28 Feb 2020 | £39K | £62K | £100K | 2 | |
| 28 Feb 2019 | £46K | £53K | £100K | ||
| 28 Feb 2018 | £55K | £27K | £82K | ||
| 28 Feb 2017 | -£42K | £27K | £70K | ||
| 28 Feb 2016 | -£35K | £1,095 | £26K | £63K |
Who runs and owns A One Builders & Merchants Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| T*** S*** | Director | Oct 2013 |
4 former officers
| Name | Role | Appointed | Left |
|---|---|---|---|
| T*** S*** | Secretary | Feb 2001 | Oct 2013 |
| Rapid Company Services Limited | Corporate Nominee Secretary | Feb 2001 | Feb 2001 |
| P*** G*** | Director | Feb 2001 | Oct 2013 |
| Rapid Nominees Limited | Nominee director (company) | Feb 2001 | Feb 2001 |
Person with significant control
Charges (secured borrowing)
1 of 1 registered charge is outstanding. A charge is security a lender takes over a company's assets, typically for a loan, mortgage or asset finance.
| Lender | Status | Registered |
|---|---|---|
| HSBC Bank PLC | Outstanding | Dec 2006 |
Where A One Builders & Merchants Ltd is registered
The registered office is in Berkshire (SL3), in the Slough local authority area, South East. Show SL3 7BW on a map.
Other trade companies in SL3
- Tac Design & Build LtdFinishing trades
- G&S Formwork LtdBuilders
- Klenzo LtdCleaning companies
- West London Crown Construction LtdBuilders
- Dahlia Investment Group LimitedProperty developers
- Ekon Electrics LtdElectricians
- R&G Maintenance LtdCleaning companies
- Cornerstone Homes & Estates LtdProperty developers
What happens if A One Builders & Merchants 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 November 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Dec 2026 to 31 Dec 2026 | £150 |
| 1 to 3 months late | 1 Jan 2027 to 28 Feb 2027 | £375 |
| 3 to 6 months late | 1 Mar 2027 to 31 May 2027 | £750 |
| More than 6 months late | From 1 Jun 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Mar 2027 | £200 |
| 3 months late | 28 May 2027 | another £200 |
| 6 months late | 28 Aug 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Feb 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
- 04158270
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 12 February 2001 (25 years ago)
- Registered office
- 36A Middlegreen Road, Langley Slough, Berkshire, SL3 7BW
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 28 February (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 28 February 2025
- Last confirmation statement
- 12 February 2026
- Charges (mortgages)
- 1 outstanding of 1 registered
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
Other active building contractors.
Frequently asked questions
When are A One Builders & Merchants Ltd's accounts due?
A One Builders & Merchants Ltd's next accounts are due at Companies House by 30 November 2026 (in 48 days), covering the period to 28 February 2026.
When is A One Builders & Merchants Ltd's CT600 due?
The CT600 for the period to 28 February 2026 is due at HMRC by 28 February 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 December 2026.
Is A One Builders & Merchants Ltd still trading?
A One Builders & Merchants 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 A One Builders & Merchants Ltd do?
A One Builders & Merchants Ltd is registered under Construction of domestic buildings (SIC 41202).
How old is A One Builders & Merchants Ltd?
A One Builders & Merchants Ltd was incorporated on 12 February 2001, 25 years ago.
Who runs A One Builders & Merchants Ltd?
A One Builders & Merchants Ltd has 1 active director, the longest-serving appointed in Oct 2013. Their names and service addresses are on the Companies House register.
Who owns A One Builders & Merchants Ltd?
One person or company has significant control of A One Builders & Merchants Ltd: an individual (owns 75% or more of the shares).
What is the penalty if A One Builders & Merchants 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 A One Builders & Merchants 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.