- Companies
- Civil engineering
- Harrow
- Arch Struct Ltd
Arch Struct Ltd
- Company number
- 11941468
- Incorporated
- 11 Apr 20197 years trading
- Registered office
- 35 Whitefriars Drive, Whitefriars Drive, Harrow, London, HA3 5HW
- Nature of business
- Construction of other civil engineering projects n.e.c.
Arch Struct Ltd is a 7-year-old private limited company registered in Harrow, company number 11941468, one of 121 civil engineering contractors in Harrow. 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 £159 (+318%) on the year before, to £109.
- Net assets rose in 1 of 5 year-on-year comparisons on record.
- 1 employee on average, up from 0 the year before.
- 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 |
|---|---|---|---|---|---|
| 31 Mar 2025 | £109 | £1,295 | £1,404 | 1 | |
| 31 Mar 2024 | -£50 | £100 | £150 | 0 | |
| 31 Mar 2023 | £100 | ||||
| 31 Mar 2022 | £100 | ||||
| 31 Mar 2021 | £100 | ||||
| 31 Mar 2020 | £100 |
Where Arch Struct Ltd is registered
The registered office is in Harrow (HA3), in the Harrow local authority area, London. Show HA3 5HW on a map.
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What happens if Arch Struct 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 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
- 11941468
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 11 April 2019 (7 years ago)
- Registered office
- 35 Whitefriars Drive, Whitefriars Drive, Harrow, London, HA3 5HW
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Unaudited abridged
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 3 April 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 Harrow
Other active civil engineering contractors registered in Harrow.
- Arona Projects Limited2026
- Ashcon Limited1994
- Asr234 Limited2026
- Axis Civil Ltd2026
- Beaualfie Limited2018
- Bee Kay Projects Limited2017
- Bic Prima Ltd2023
- Boss Contracts Ltd2002
All civil engineering contractors in Harrow · All trades in Harrow · Civil engineering across the UK
Frequently asked questions
When are Arch Struct Ltd's accounts due?
Arch Struct Ltd's next accounts are due at Companies House by 31 December 2026 (in 80 days), covering the period to 31 March 2026.
When is Arch Struct Ltd'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 Arch Struct Ltd still trading?
Arch Struct 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 Arch Struct Ltd do?
Arch Struct Ltd is registered under Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is Arch Struct Ltd?
Arch Struct Ltd was incorporated on 11 April 2019, 7 years ago.
What is the penalty if Arch Struct 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 Arch Struct 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.