- Companies
- Civil engineering
- London
- Atcn Consulting Limited
Atcn Consulting Limited
- Company number
- 10918562
- Incorporated
- 16 Aug 20179 years trading
- Registered office
- 167-169 Great Portland Street, 5TH Floor, 167-169 Great Portland Street, London, W1W 5PF
- Nature of business
- Construction of other civil engineering projects n.e.c.; specialised design activities
Atcn Consulting Limited is a 9-year-old private limited company registered in London, company number 10918562, one of 1,853 civil engineering contractors in London. Its next accounts are due at Companies House on 30 May 2027, and the CT600 for the period to 30 August 2026 is due at HMRC on 30 August 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 £4,266 (+101.6%) on the year before, to £68.
- Net assets rose in 3 of 7 year-on-year comparisons on record.
- Current assets of £51K against £52K owed within a year: 1.0 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 8 years, 2018 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Aug 2025 | £68 | £6,122 | £51K | £52K | 0 |
| 30 Aug 2024 | -£4,198 | £34K | £81K | £87K | 2 |
| 30 Aug 2023 | -£5,117 | £14K | £91K | £98K | 4 |
| 30 Aug 2022 | £6,279 | £22K | £97K | £93K | 4 |
| 30 Aug 2021 | -£4,819 | £4,679 | £51K | £59K | 3 |
| 30 Aug 2020 | £852 | £11K | £43K | £51K | 1 |
| 31 Aug 2019 | £7,008 | £3,731 | £891 | 0 | |
| 31 Aug 2018 | £7,683 | £3,731 | £216 |
Who runs and owns Atcn Consulting Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| A*** T*** | Director | Apr 2019 |
3 former officers
| Name | Role | Appointed | Left |
|---|---|---|---|
| A*** A*** | Director | Oct 2020 | May 2024 |
| A*** T*** | Director | Aug 2017 | Apr 2019 |
| J*** T*** | Director | Jan 2019 | Oct 2020 |
Person with significant control
Where Atcn Consulting Limited is registered
The registered office is in London (W1W), in the Westminster local authority area, London. Show W1W 5PF on a map.
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Shared registered office
1,494 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if Atcn Consulting 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 30 May 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 31 May 2027 to 30 Jun 2027 | £150 |
| 1 to 3 months late | 1 Jul 2027 to 30 Aug 2027 | £375 |
| 3 to 6 months late | 31 Aug 2027 to 30 Nov 2027 | £750 |
| More than 6 months late | From 1 Dec 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 31 Aug 2027 | £200 |
| 3 months late | 30 Nov 2027 | another £200 |
| 6 months late | 29 Feb 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Aug 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
- 10918562
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 16 August 2017 (9 years ago)
- Registered office
- 167-169 Great Portland Street, 5TH Floor, 167-169 Great Portland Street, London, W1W 5PF
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
specialised design activities (SIC 74100) - Year end
- 30 August (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 August 2025
- Last confirmation statement
- 28 October 2025
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 London
Other active civil engineering contractors registered in London.
- Atebion Cyf.1994
- Aten Ra Limited2025
- Ati Fibrenet Ltd2020
- Atlan Civils Ltd2025
- Atlantic Geospatial Ltd2026
- Atlas Construction and Engineering Ltd2020
- Aulona Cable Telecommunication Ltd2018
- Aum Civil Engineering Ltd2023
All civil engineering contractors in London · All trades in London · Civil engineering across the UK
Frequently asked questions
When are Atcn Consulting Limited's accounts due?
Atcn Consulting Limited's next accounts are due at Companies House by 30 May 2027 (in 229 days), covering the period to 30 August 2026.
When is Atcn Consulting Limited's CT600 due?
The CT600 for the period to 30 August 2026 is due at HMRC by 30 August 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 31 May 2027.
Is Atcn Consulting Limited still trading?
Atcn Consulting 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 Atcn Consulting Limited do?
Atcn Consulting Limited is registered under Construction of other civil engineering projects n.e.c. (SIC 42990); specialised design activities (SIC 74100).
How old is Atcn Consulting Limited?
Atcn Consulting Limited was incorporated on 16 August 2017, 9 years ago.
Who runs Atcn Consulting Limited?
Atcn Consulting Limited has 1 active director, the longest-serving appointed in Apr 2019. Their names and service addresses are on the Companies House register.
Who owns Atcn Consulting Limited?
One person or company has significant control of Atcn Consulting Limited: an individual (owns 25% to 50% of the shares).
What is the penalty if Atcn Consulting 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 Atcn Consulting 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.