- Companies
- Civil engineering
- Brighton
- The Sublinear Company Ltd
The Sublinear Company Ltd
- Company number
- 16337461
- Incorporated
- 24 Mar 20251 year trading
- Registered office
- 18 Beaconsfield Villas, Brighton, East Sussex, BN1 6HD
- Nature of business
- Construction of utility projects for electricity and telecommunications
The Sublinear Company Ltd is a 1-year-old private limited company registered in Brighton, company number 16337461, one of 27 civil engineering contractors in Brighton. 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 up £535 on the year before, to £535.
- Current assets of £52K against £65K owed within a year: 0.8 times cover.
- 3 employees on average, up from 0 the year before.
- Balance sheets on record for 2 years, 2025 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2026 | £535 | -£489 | £52K | £65K | 3 |
| 31 Mar 2025 | £0 | £0 | £0 | £0 | 0 |
Where The Sublinear Company Ltd is registered
The registered office is in Brighton (BN1), in the Brighton and Hove local authority area, South East. Show BN1 6HD on a map.
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What happens if The Sublinear Company 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 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
- 16337461
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 24 March 2025 (1 year ago)
- Registered office
- 18 Beaconsfield Villas, Brighton, East Sussex, BN1 6HD
- Nature of business
- Construction of utility projects for electricity and telecommunications (SIC 42220)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2026
- Last confirmation statement
- 23 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 Brighton
Other active civil engineering contractors registered in Brighton.
- TMH Contract Solutions Limited2025
- Tournay-Godfrey Ltd2015
- Ventham Construction Limited1997
- A.R.C Build Limited2026
- Adenstar Developments Limited1982
- Adenstar Projects Limited1998
- Ah Rail and Civils Limited2026
- Big Banking Limited2016
All civil engineering contractors in Brighton · All trades in Brighton · Civil engineering across the UK
Frequently asked questions
When are The Sublinear Company Ltd's accounts due?
The Sublinear Company Ltd's next accounts are due at Companies House by 31 December 2027 (in 444 days), covering the period to 31 March 2027.
When is The Sublinear Company Ltd'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 The Sublinear Company Ltd still trading?
The Sublinear Company 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 The Sublinear Company Ltd do?
The Sublinear Company Ltd is registered under Construction of utility projects for electricity and telecommunications (SIC 42220).
How old is The Sublinear Company Ltd?
The Sublinear Company Ltd was incorporated on 24 March 2025, 1 year ago.
What is the penalty if The Sublinear Company 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 The Sublinear Company 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.