- Companies
- Civil engineering
- Southampton
- RJ Civil Engineering Solutions Ltd
RJ Civil Engineering Solutions Ltd
- Company number
- 12390598
- Incorporated
- 7 Jan 20206 years trading
- Registered office
- Flat 1 Exchange Court, Back of the Walls, Southampton, SO14 3SB
- Nature of business
- Construction of other civil engineering projects n.e.c.
RJ Civil Engineering Solutions Ltd is a 6-year-old private limited company registered in Southampton, company number 12390598, one of 114 civil engineering contractors in Southampton. Its next accounts are due at Companies House on 31 October 2027, and the CT600 for the period to 31 January 2027 is due at HMRC on 31 January 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 £13K (+128.8%) on the year before, to £24K.
- Net assets rose in 3 of 6 year-on-year comparisons on record.
- Current assets of £65K against £41K owed within a year: 1.6 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 7 years, 2021 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jan 2026 | £24K | £1,133 | £65K | £41K | 1 |
| 31 Jan 2025 | £10K | £16K | £16K | £5,567 | 1 |
| 31 Jan 2024 | -£179 | £297 | £297 | £476 | 0 |
| 31 Jan 2023 | -£179 | £297 | £297 | £476 | 0 |
| 24 Jan 2023 | £1 | ||||
| 31 Jan 2022 | -£179 | £297 | £297 | £476 | 1 |
| 31 Jan 2021 | £8,633 | £8,632 | £8,633 | 1 |
Where RJ Civil Engineering Solutions Ltd is registered
The registered office is in Southampton (SO14), in the Southampton local authority area, South East. Show SO14 3SB on a map.
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What happens if RJ Civil Engineering Solutions 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 October 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2027 to 30 Nov 2027 | £150 |
| 1 to 3 months late | 1 Dec 2027 to 31 Jan 2028 | £375 |
| 3 to 6 months late | 1 Feb 2028 to 30 Apr 2028 | £750 |
| More than 6 months late | From 1 May 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2028 | £200 |
| 3 months late | 30 Apr 2028 | another £200 |
| 6 months late | 31 Jul 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 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
- 12390598
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 7 January 2020 (6 years ago)
- Registered office
- Flat 1 Exchange Court, Back of the Walls, Southampton, SO14 3SB
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
- Year end
- 31 January (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 January 2026
- Last confirmation statement
- 5 January 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.
- RJS Subsea Ltd2020
- Rly Construction Ltd2018
- RMJ Geo-Engineering Services Limited2025
- Roofing Cladding & Building Limited1994
- Rosice Gas Services Ltd2025
- Royle Hobbs Construction Limited1997
- RP Windows & Building Services Limited2004
- RSR Contractors Limited2014
All civil engineering contractors in Southampton · All trades in Southampton · Civil engineering across the UK
Frequently asked questions
When are RJ Civil Engineering Solutions Ltd's accounts due?
RJ Civil Engineering Solutions Ltd's next accounts are due at Companies House by 31 October 2027 (in 383 days), covering the period to 31 January 2027.
When is RJ Civil Engineering Solutions Ltd's CT600 due?
The CT600 for the period to 31 January 2027 is due at HMRC by 31 January 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 November 2027.
Is RJ Civil Engineering Solutions Ltd still trading?
RJ Civil Engineering Solutions 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 RJ Civil Engineering Solutions Ltd do?
RJ Civil Engineering Solutions Ltd is registered under Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is RJ Civil Engineering Solutions Ltd?
RJ Civil Engineering Solutions Ltd was incorporated on 7 January 2020, 6 years ago.
What is the penalty if RJ Civil Engineering Solutions 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 RJ Civil Engineering Solutions 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.