- Companies
- Civil engineering
- Liverpool
- 21ST Century Construction Ltd
21ST Century Construction Ltd
- Company number
- 16646002
- Incorporated
- 12 Aug 20251 year trading
- Registered office
- Seymour Chambers, 92 London Road, Liverpool, Merseyside, L3 5NW
- Nature of business
- Construction of other civil engineering projects n.e.c.
21ST Century Construction Ltd is a 1-year-old private limited company registered in Liverpool, company number 16646002, one of 284 civil engineering contractors in Liverpool. Its next accounts are due at Companies House on 12 May 2027, and its first CT600 is due at HMRC on 11 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 21ST Century Construction Ltd is registered
The registered office is in Liverpool (L3), in the Liverpool local authority area, North West. Show L3 5NW on a map.
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- TLV Building Services LtdProperty developers
Shared registered office
218 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 21ST Century Construction 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 12 May 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 13 May 2027 to 12 Jun 2027 | £150 |
| 1 to 3 months late | 13 Jun 2027 to 12 Aug 2027 | £375 |
| 3 to 6 months late | 13 Aug 2027 to 12 Nov 2027 | £750 |
| More than 6 months late | From 13 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
- 16646002
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 12 August 2025 (1 year ago)
- Registered office
- Seymour Chambers, 92 London Road, Liverpool, Merseyside, L3 5NW
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
- Year end
- 31 August (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 14 August 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 Liverpool
Other active civil engineering contractors registered in Liverpool.
- 4 Construction Management Ltd2022
- A & C Civil Engineering Ltd2020
- A.S.K. Construction Services Ltd2001
- Ab Flagging Ltd2022
- Above Access Limited2023
- Absolute Rail Ltd2023
- Access Fibre Ltd2026
- Accuro Engineering Ltd2022
All civil engineering contractors in Liverpool · All trades in Liverpool · Civil engineering across the UK
Frequently asked questions
When are 21ST Century Construction Ltd's accounts due?
21ST Century Construction Ltd's next accounts are due at Companies House by 12 May 2027 (in 211 days), covering the period to 31 August 2026.
When is 21ST Century Construction 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 11 August 2026, due by 11 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 21ST Century Construction Ltd still trading?
21ST Century Construction 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 21ST Century Construction Ltd do?
21ST Century Construction Ltd is registered under Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is 21ST Century Construction Ltd?
21ST Century Construction Ltd was incorporated on 12 August 2025, 1 year ago.
What is the penalty if 21ST Century Construction 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 21ST Century Construction 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.