- Companies
- Civil engineering
- London
- Gasentec UK Limited
Gasentec UK Limited
- Company number
- 16624857
- Incorporated
- 4 Aug 20251 year trading
- Registered office
- Lynton House, 7-12 Tavistock Square, London, WC1H 9BQ
- Nature of business
- Construction of other civil engineering projects n.e.c.; Other engineering activities; Other professional, scientific and technical activities n.e.c.
Gasentec UK Limited is a 1-year-old private limited company registered in London, company number 16624857, one of 1,853 civil engineering contractors in London. Its next accounts are due at Companies House on 4 May 2027, and its first CT600 is due at HMRC on 3 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 Gasentec UK Limited is registered
The registered office is in London (WC1H), in the Camden local authority area, London. Show WC1H 9BQ on a map.
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Shared registered office
73 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 Gasentec UK 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 4 May 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 5 May 2027 to 4 Jun 2027 | £150 |
| 1 to 3 months late | 5 Jun 2027 to 4 Aug 2027 | £375 |
| 3 to 6 months late | 5 Aug 2027 to 4 Nov 2027 | £750 |
| More than 6 months late | From 5 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
- 16624857
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 4 August 2025 (1 year ago)
- Registered office
- Lynton House, 7-12 Tavistock Square, London, WC1H 9BQ
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
Other engineering activities (SIC 71129)
Other professional, scientific and technical activities n.e.c. (SIC 74909) - Year end
- 31 August (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 27 October 2025
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.
- Gaul Construction Limited2018
- Gavinobrienelec Ltd2024
- Gbssl Limited2020
- Gcitj Babel Limited2021
- Gea Civil Engineering & Surveys Ltd2017
- Gej Project Services Limited2012
- Gel Construction Limited2014
- Genosu Limited2016
All civil engineering contractors in London · All trades in London · Civil engineering across the UK
Frequently asked questions
When are Gasentec UK Limited's accounts due?
Gasentec UK Limited's next accounts are due at Companies House by 4 May 2027 (in 203 days), covering the period to 31 August 2026.
When is Gasentec UK Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 3 August 2026, due by 3 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 Gasentec UK Limited still trading?
Gasentec UK 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 Gasentec UK Limited do?
Gasentec UK Limited is registered under Construction of other civil engineering projects n.e.c. (SIC 42990); Other engineering activities (SIC 71129); Other professional, scientific and technical activities n.e.c. (SIC 74909).
How old is Gasentec UK Limited?
Gasentec UK Limited was incorporated on 4 August 2025, 1 year ago.
What is the penalty if Gasentec UK 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 Gasentec UK 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.