- Companies
- Civil engineering
- Sandwich
- Tetra Engineering Limited
Tetra Engineering Limited
- Company number
- 01511018
- Incorporated
- 5 Aug 198046 years trading
- Registered office
- 9 New Street, Sandwich, Kent, CT13 9AB
- Nature of business
- Construction of other civil engineering projects n.e.c.; Other professional, scientific and technical activities n.e.c.
Tetra Engineering Limited is a 46-year-old private limited company registered in Sandwich, company number 01511018, one of 6 civil engineering contractors in Sandwich. Its next accounts are due at Companies House on 31 December 2027, and the CT600 for the period to 31 March 2027 is due at HMRC on 31 March 2028.
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 down £4,205 (-10.4%) on the year before, to -£45K.
- Net assets rose in 3 of 9 year-on-year comparisons on record.
- Current assets of £20K against £65K owed within a year: 0.3 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 10 years, 2017 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2026 | -£45K | £20K | £20K | £65K | 2 |
| 31 Mar 2025 | -£41K | £23K | £23K | £65K | 2 |
| 31 Mar 2024 | £36K | £33K | £69K | 0 | |
| 31 Mar 2023 | -£33K | £40K | £74K | 0 | |
| 31 Mar 2022 | -£29K | £44K | £74K | 0 | |
| 31 Mar 2021 | -£29K | £43K | £73K | 0 | |
| 31 Mar 2020 | -£34K | £37K | £73K | 1 | |
| 31 Mar 2019 | -£28K | £44K | £73K | 1 | |
| 31 Mar 2018 | -£14K | £53K | £54K | £69K | |
| 31 Mar 2017 | -£50K | £99K | £100K | £152K | 2 |
Who runs and owns Tetra Engineering Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (2)
| Name | Role | Appointed |
|---|---|---|
| U*** N*** | Director | before May 1991 |
| B*** N*** | Secretary | before May 1991 |
1 former officer
| Name | Role | Appointed | Left |
|---|---|---|---|
| B*** N*** | Director | May 2026 |
Person with significant control
Where Tetra Engineering Limited is registered
The registered office is in Sandwich (CT13), in the Dover local authority area, South East. Show CT13 9AB on a map.
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What happens if Tetra Engineering 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 31 December 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2028 to 31 Jan 2028 | £150 |
| 1 to 3 months late | 1 Feb 2028 to 31 Mar 2028 | £375 |
| 3 to 6 months late | 1 Apr 2028 to 30 Jun 2028 | £750 |
| More than 6 months late | From 1 Jul 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2028 | £200 |
| 3 months late | 30 Jun 2028 | another £200 |
| 6 months late | 30 Sep 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 2029 | 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
- 01511018
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 5 August 1980 (46 years ago)
- Registered office
- 9 New Street, Sandwich, Kent, CT13 9AB
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
Other professional, scientific and technical activities n.e.c. (SIC 74909) - Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2026
- Last confirmation statement
- 23 May 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 Sandwich
Other active civil engineering contractors registered in Sandwich.
- BW Groundworks Ltd2019
- DCD Project Services Limited2019
- DLW Wind and Solar Energy (Pty) Ltd2025
- Matkirst Limited2007
- P and C Utilities Limited2017
All civil engineering contractors in Sandwich · All trades in Sandwich · Civil engineering across the UK
Frequently asked questions
When are Tetra Engineering Limited's accounts due?
Tetra Engineering Limited's next accounts are due at Companies House by 31 December 2027 (in 444 days), covering the period to 31 March 2027.
When is Tetra Engineering Limited's CT600 due?
The CT600 for the period to 31 March 2027 is due at HMRC by 31 March 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2028.
Is Tetra Engineering Limited still trading?
Tetra Engineering 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 Tetra Engineering Limited do?
Tetra Engineering Limited is registered under Construction of other civil engineering projects n.e.c. (SIC 42990); Other professional, scientific and technical activities n.e.c. (SIC 74909).
How old is Tetra Engineering Limited?
Tetra Engineering Limited was incorporated on 5 August 1980, 46 years ago.
Who runs Tetra Engineering Limited?
Tetra Engineering Limited has 1 active director. Their names and service addresses are on the Companies House register.
Who owns Tetra Engineering Limited?
One person or company has significant control of Tetra Engineering Limited: an individual (has significant influence or control).
What is the penalty if Tetra Engineering 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 Tetra Engineering 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.