- Companies
- Civil engineering
- Southampton
- Rubex Construction Ltd
Rubex Construction Ltd
- Company number
- 16425898
- Incorporated
- 2 May 20251 year trading
- Registered office
- 101 Andersons Road, Southampton, SO14 5FD
- Nature of business
- Construction of other civil engineering projects n.e.c.
Rubex Construction Ltd is a 1-year-old private limited company registered in Southampton, company number 16425898, one of 114 civil engineering contractors in Southampton. Its next accounts are due at Companies House on 2 February 2027, and its first CT600 is due at HMRC on 1 May 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 Rubex Construction Ltd is registered
The registered office is in Southampton (SO14), in the Southampton local authority area, South East. Show SO14 5FD on a map.
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What happens if Rubex Construction 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 2 February 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 3 Feb 2027 to 2 Mar 2027 | £150 |
| 1 to 3 months late | 3 Mar 2027 to 2 May 2027 | £375 |
| 3 to 6 months late | 3 May 2027 to 2 Aug 2027 | £750 |
| More than 6 months late | From 3 Aug 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jun 2027 | £200 |
| 3 months late | 31 Aug 2027 | another £200 |
| 6 months late | 30 Nov 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 May 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
- 16425898
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 2 May 2025 (1 year ago)
- Registered office
- 101 Andersons Road, Southampton, SO14 5FD
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
- Year end
- 31 May (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 1 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 Southampton
Other active civil engineering contractors registered in Southampton.
- Ryan Contracting UK Limited2006
- Safe TM Services Limited2015
- SB Surfacing Ltd2008
- Shane Dixon Limited2015
- Shewan Services Limited2013
- SKRC Integrated Infrastructure Ltd2026
- SLH Contractors Ltd2007
- SLS Construction (Southern) Ltd2008
All civil engineering contractors in Southampton · All trades in Southampton · Civil engineering across the UK
Frequently asked questions
When are Rubex Construction Ltd's accounts due?
Rubex Construction Ltd's next accounts are due at Companies House by 2 February 2027 (in 113 days), covering the period to 31 May 2026.
When is Rubex Construction 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 1 May 2026, due by 1 May 2027, and one for the period to 31 May 2026, due by 31 May 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Rubex Construction Ltd still trading?
Rubex Construction 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 Rubex Construction Ltd do?
Rubex Construction Ltd is registered under Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is Rubex Construction Ltd?
Rubex Construction Ltd was incorporated on 2 May 2025, 1 year ago.
What is the penalty if Rubex Construction 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 Rubex Construction 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.