- Companies
- Specialist contractors
- Larne
- Sustainable Trench Technologies Ltd
Sustainable Trench Technologies Ltd
- Company number
- NI683730
- Incorporated
- 11 Nov 20214 years trading
- Registered office
- Suite 4 Commercial Mews, 93-97 Main Street, Larne, BT40 1HJ
- Nature of business
- Other specialised construction activities n.e.c.
Sustainable Trench Technologies Ltd is a 4-year-old private limited company registered in Larne, company number NI683730, one of 8 specialist construction companies in Larne. Its next accounts are due at Companies House on 26 November 2026, and its first CT600 is due at HMRC on 30 November 2026.
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 £831 (+831%) on the year before, to £931.
- Current assets of £20K against £21K owed within a year: 1.0 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 3 years, 2022 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Nov 2024 | £931 | £20K | £21K | 2 | |
| 30 Nov 2023 | £100 | £100 | |||
| 30 Nov 2022 | £100 | £100 |
Where Sustainable Trench Technologies Ltd is registered
The registered office is in Larne (BT40), in the Mid and East Antrim local authority area, Northern Ireland. Show BT40 1HJ on a map.
Other trade companies in BT40
- GW Home Improvements and Maintenance LtdBuilders
- East Coast Contracting NI LtdBuilders
- Abbey Washing Machines LtdRepair services
- CM Fit Out & Construction LtdJoiners and carpenters
- Blackwood & Crawford LtdProperty developers
- TT Tiling LtdFloor and wall tilers
- JM Servicess LtdSpecialist contractors
- NPH Heating and Plumbing LtdPlumbers and heating engineers
Shared registered office
72 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 Sustainable Trench Technologies 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 26 November 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 27 Nov 2026 to 26 Dec 2026 | £150 |
| 1 to 3 months late | 27 Dec 2026 to 26 Feb 2027 | £375 |
| 3 to 6 months late | 27 Feb 2027 to 26 May 2027 | £750 |
| More than 6 months late | From 27 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 27 Feb 2027 | £200 |
| 3 months late | 26 May 2027 | another £200 |
| 6 months late | 26 Aug 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 26 Feb 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
- NI683730
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 11 November 2021 (4 years ago)
- Registered office
- Suite 4 Commercial Mews, 93-97 Main Street, Larne, BT40 1HJ
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 25 November (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 November 2024
- Last confirmation statement
- 10 November 2025
Filing notes for specialist construction companies
Specialist contractors often work under CIS for main contractors. Retentions held back by the customer still count towards turnover once the work is done.
Similar companies in Larne
Other active specialist construction companies registered in Larne.
- Vera Letharna Ltd2025
- Eps Plant & Safety Ltd2010
- G M Property Maintenance Limited2026
- JM Servicess Ltd2026
- Pronet Safety Limited2020
- Sherkin Enterprises Limited2015
- Supreme (N.I.) Ltd2021
All specialist construction companies in Larne · All trades in Larne · Specialist contractors across the UK
Frequently asked questions
When are Sustainable Trench Technologies Ltd's accounts due?
Sustainable Trench Technologies Ltd's next accounts are due at Companies House by 26 November 2026 (in 43 days), covering the period to 26 February 2026.
When is Sustainable Trench Technologies 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 30 November 2025, due by 30 November 2026, and one for the period to 26 February 2026, due by 26 February 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Sustainable Trench Technologies Ltd still trading?
Sustainable Trench Technologies 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 Sustainable Trench Technologies Ltd do?
Sustainable Trench Technologies Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Sustainable Trench Technologies Ltd?
Sustainable Trench Technologies Ltd was incorporated on 11 November 2021, 4 years ago.
What is the penalty if Sustainable Trench Technologies 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 Sustainable Trench Technologies 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.