- Company number
- 10840355
- Incorporated
- 28 Jun 20179 years trading
- Registered office
- 3 Linkfield Road, Isleworth, TW7 6QG
- Nature of business
- Construction of domestic buildings
Conceptual Build Limited is a 9-year-old private limited company registered in Isleworth, company number 10840355, one of 132 building contractors in Isleworth. Its next accounts are due at Companies House on 28 February 2027, and the CT600 for the period to 31 May 2026 is due at HMRC on 31 May 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 £12K (-148.6%) on the year before, to -£3,780.
- Net assets rose in 2 of 6 year-on-year comparisons on record.
- Current assets of £13K against £81K owed within a year: 0.2 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 7 years, 2018 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 May 2025 | -£3,780 | £13K | £13K | £81K | 1 |
| 28 Dec 2023 | £7,784 | £13K | £44K | £218K | 1 |
| 28 Dec 2022 | £22K | £163K | £204K | £136K | 1 |
| 28 Dec 2021 | £1,255 | £3,763 | £87K | £40K | 1 |
| 28 Dec 2020 | £5,350 | £36K | £74K | £69K | 1 |
| 28 Dec 2019 | £12K | £26K | £28K | £16K | 1 |
| 28 Dec 2018 | £2,182 | £4,235 | £30K | £28K | 0 |
Who runs and owns Conceptual Build Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (2)
| Name | Role | Appointed |
|---|---|---|
| L*** S*** | Director | Jul 2023 |
| P*** F*** | Secretary | Jun 2017 |
2 former officers
| Name | Role | Appointed | Left |
|---|---|---|---|
| P*** F*** | Director | Jun 2017 | Dec 2019 |
| A*** M*** | Director | Feb 2019 | May 2024 |
Person with significant control
Where Conceptual Build Limited is registered
The registered office is in Isleworth (TW7), in the Hounslow local authority area, London. Show TW7 6QG on a map.
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Also registered at this address
3 other companies use the same registered office as Conceptual Build Limited.
- Fleming Mechanical LimitedPlumbers and heating engineers
- Johnson Process Systems LimitedMachinery repair and installation
- PC Cad Bim Modelling LtdProperty developers
What happens if Conceptual Build 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 28 February 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Mar 2027 to 31 Mar 2027 | £150 |
| 1 to 3 months late | 1 Apr 2027 to 31 May 2027 | £375 |
| 3 to 6 months late | 1 Jun 2027 to 31 Aug 2027 | £750 |
| More than 6 months late | From 1 Sep 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jun 2027 | £200 |
| 3 months late | 31 Aug 2027 | another £200 |
| 6 months late | 30 Nov 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 May 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
- 10840355
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 28 June 2017 (9 years ago)
- Registered office
- 3 Linkfield Road, Isleworth, TW7 6QG
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 31 May (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 May 2025
- Last confirmation statement
- 27 June 2026
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 Isleworth
Other active building contractors registered in Isleworth.
- Corecraft Ltd2023
- Cuckoo Construction Ltd2014
- Davi Maintenance & Management Solutions Ltd2024
- Dion Developments Ltd2018
- Dream Home Decorators Limited2024
- Dream Homes West London Ltd2019
- E & S Building Construction Ltd2018
- Easyfixes Maintenance Ltd2022
All building contractors in Isleworth · All trades in Isleworth · Builders across the UK
Frequently asked questions
When are Conceptual Build Limited's accounts due?
Conceptual Build Limited's next accounts are due at Companies House by 28 February 2027 (in 139 days), covering the period to 31 May 2026.
When is Conceptual Build Limited's CT600 due?
The CT600 for the period to 31 May 2026 is due at HMRC by 31 May 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 March 2027.
Is Conceptual Build Limited still trading?
Conceptual Build 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 Conceptual Build Limited do?
Conceptual Build Limited is registered under Construction of domestic buildings (SIC 41202).
How old is Conceptual Build Limited?
Conceptual Build Limited was incorporated on 28 June 2017, 9 years ago.
Who runs Conceptual Build Limited?
Conceptual Build Limited has 1 active director, the longest-serving appointed in Jul 2023. Their names and service addresses are on the Companies House register.
Who owns Conceptual Build Limited?
One person or company has significant control of Conceptual Build Limited: an individual (owns 75% or more of the shares).
What is the penalty if Conceptual Build 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 Conceptual Build 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.