- Companies
- Civil engineering
- Southsea
- Gravitas Power Ltd
Gravitas Power Ltd
- Company number
- 16340824
- Incorporated
- 25 Mar 20251 year trading
- Registered office
- 1 Delamere Road, Southsea, PO4 0JA
- Nature of business
- Construction of utility projects for electricity and telecommunications
Gravitas Power Ltd is a 1-year-old private limited company registered in Southsea, company number 16340824, one of 11 civil engineering contractors in Southsea. Its next accounts are due at Companies House on 25 December 2026, and its first CT600 is due at HMRC on 24 March 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 Gravitas Power Ltd is registered
The registered office is in Southsea (PO4), in the Portsmouth local authority area, South East. Show PO4 0JA on a map.
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What happens if Gravitas Power 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 25 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 26 Dec 2026 to 25 Jan 2027 | £150 |
| 1 to 3 months late | 26 Jan 2027 to 25 Mar 2027 | £375 |
| 3 to 6 months late | 26 Mar 2027 to 25 Jun 2027 | £750 |
| More than 6 months late | From 26 Jun 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 16340824
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 25 March 2025 (1 year ago)
- Registered office
- 1 Delamere Road, Southsea, PO4 0JA
- Nature of business
- Construction of utility projects for electricity and telecommunications (SIC 42220)
- Year end
- 31 March (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 24 March 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 Southsea
Other active civil engineering contractors registered in Southsea.
- Line Crew Construction Ltd2015
- Maeb Limited2010
- Malborne Limited2003
- Southsea Services Limited2022
- Streetworks Solutions Ltd2025
- Tawson Limited2022
- Utility Connection Experts Ltd2025
- Chase RCS Ltd2026
All civil engineering contractors in Southsea · All trades in Southsea · Civil engineering across the UK
Frequently asked questions
When are Gravitas Power Ltd's accounts due?
Gravitas Power Ltd's next accounts are due at Companies House by 25 December 2026 (in 73 days), covering the period to 31 March 2026.
When is Gravitas Power 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 24 March 2026, due by 24 March 2027, and one for the period to 31 March 2026, due by 31 March 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Gravitas Power Ltd still trading?
Gravitas Power 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 Gravitas Power Ltd do?
Gravitas Power Ltd is registered under Construction of utility projects for electricity and telecommunications (SIC 42220).
How old is Gravitas Power Ltd?
Gravitas Power Ltd was incorporated on 25 March 2025, 1 year ago.
What is the penalty if Gravitas Power 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 Gravitas Power 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.