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- Civil engineering
- Luton
- Thianet Ltd
Company profile · Civil engineering
Thianet Ltd
Thianet Ltd is a 1-year-old private limited company registered in Luton, company number 16578775, one of 164 civil engineering contractors in Luton. Its next accounts are due at Companies House on 14 April 2027, and its first CT600 is due at HMRC on 13 July 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 Thianet Ltd is registered
The registered office is in Luton (LU1), in the Luton local authority area, East of England. Show LU1 1SH on a map.
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- Vertex Home Improvements LtdRoofers
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- Avram Cleaning LtdCleaning companies
Shared registered office
56 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 Thianet 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 14 April 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 15 Apr 2027 to 14 May 2027 | £150 |
| 1 to 3 months late | 15 May 2027 to 14 Jul 2027 | £375 |
| 3 to 6 months late | 15 Jul 2027 to 14 Oct 2027 | £750 |
| More than 6 months late | From 15 Oct 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2027 | £200 |
| 3 months late | 31 Oct 2027 | another £200 |
| 6 months late | 31 Jan 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jul 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
- 16578775
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 14 July 2025 (1 year ago)
- Registered office
- 58 New Bedford Road, Luton, Bedfordshire, LU1 1SH
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
Wired telecommunications activities (SIC 61100)
Other telecommunications activities (SIC 61900)
Other engineering activities (SIC 71129) - Year end
- 31 July (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 13 July 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 Luton
Other active civil engineering contractors registered in Luton.
- Tormaa Ltd2026
- Traac Ltd2024
- Tru Automation Ltd2021
- Val Utilities Limited2018
- Vehicle Restraint Systems Ltd2022
- Vic & Bro Ltd2018
- Viraj Construction Limited2021
- Vma Network Ltd2023
All civil engineering contractors in Luton · All trades in Luton · Civil engineering across the UK
Frequently asked questions
When are Thianet Ltd's accounts due?
Thianet Ltd's next accounts are due at Companies House by 14 April 2027 (in 184 days), covering the period to 31 July 2026.
When is Thianet 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 13 July 2026, due by 13 July 2027, and one for the period to 31 July 2026, due by 31 July 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Thianet Ltd still trading?
Thianet 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 Thianet Ltd do?
Thianet Ltd is registered under Construction of other civil engineering projects n.e.c. (SIC 42990); Wired telecommunications activities (SIC 61100); Other telecommunications activities (SIC 61900); Other engineering activities (SIC 71129).
How old is Thianet Ltd?
Thianet Ltd was incorporated on 14 July 2025, 1 year ago.
What is the penalty if Thianet 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 Thianet 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.