- Companies
- Civil engineering
- London
- Atlan Civils Ltd
Atlan Civils Ltd
- Company number
- 16660207
- Incorporated
- 19 Aug 20251 year trading
- Registered office
- 56 Maxted Road, London, SE15 4LF
- Nature of business
- Construction of water projects; Construction of other civil engineering projects n.e.c.
Atlan Civils Ltd is a 1-year-old private limited company registered in London, company number 16660207, one of 1,853 civil engineering contractors in London. Its next accounts are due at Companies House on 19 May 2027, and its first CT600 is due at HMRC on 18 August 2027.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
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Where Atlan Civils Ltd is registered
The registered office is in London (SE15), in the Southwark local authority area, London. Show SE15 4LF on a map.
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What happens if Atlan Civils 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 19 May 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 20 May 2027 to 19 Jun 2027 | £150 |
| 1 to 3 months late | 20 Jun 2027 to 19 Aug 2027 | £375 |
| 3 to 6 months late | 20 Aug 2027 to 19 Nov 2027 | £750 |
| More than 6 months late | From 20 Nov 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 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 | 31 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
- 16660207
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 19 August 2025 (1 year ago)
- Registered office
- 56 Maxted Road, London, SE15 4LF
- Nature of business
- Construction of water projects (SIC 42910)
Construction of other civil engineering projects n.e.c. (SIC 42990) - Year end
- 31 August (accounting reference date)
- Accounts type
- No accounts filed yet
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.
- Atlantic Geospatial Ltd2026
- Atlas Construction and Engineering Ltd2020
- Aulona Cable Telecommunication Ltd2018
- Aum Civil Engineering Ltd2023
- Aurora Utilities (Electricity) Limited2023
- Austin Brickwork Limited1998
- Austin Contractors Limited2004
- Austinsite Limited2016
All civil engineering contractors in London · All trades in London · Civil engineering across the UK
Frequently asked questions
When are Atlan Civils Ltd's accounts due?
Atlan Civils Ltd's next accounts are due at Companies House by 19 May 2027 (in 218 days), covering the period to 31 August 2026.
When is Atlan Civils Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 18 August 2026, due by 18 August 2027, and one for the period to 31 August 2026, due by 31 August 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Atlan Civils Ltd still trading?
Atlan Civils Ltd is listed as active on the Companies House register (checked 13 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 Atlan Civils Ltd do?
Atlan Civils Ltd is registered under Construction of water projects (SIC 42910); Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is Atlan Civils Ltd?
Atlan Civils Ltd was incorporated on 19 August 2025, 1 year ago.
What is the penalty if Atlan Civils 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 Atlan Civils Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 13 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.