- Companies
- Civil engineering
- London
- Karolis Solutions Limited
Karolis Solutions Limited
- Company number
- 12172477
- Incorporated
- 23 Aug 20197 years trading
- Registered office
- 24A Wilton Road, London, SE2 9RH
- Nature of business
- Construction of railways and underground railways
Karolis Solutions Limited is a 7-year-old private limited company registered in London, company number 12172477, one of 1,853 civil engineering contractors in London. Companies House shows its accounts as overdue: they were due on 31 May 2026.
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 down £2,362 (-90.3%) on the year before, to £254.
- Net assets rose in 2 of 4 year-on-year comparisons on record.
- Current assets of £11K against £309 owed within a year: more than 10 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 5 years, 2020 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Aug 2024 | £254 | £686 | £11K | £309 | 1 |
| 31 Aug 2023 | £2,616 | £676 | £17K | £2,981 | 1 |
| 31 Aug 2022 | £3,931 | £2,035 | £21K | £3,957 | 1 |
| 31 Aug 2021 | £676 | £4,469 | £20K | £4,379 | 1 |
| 31 Aug 2020 | £499 | £33K | £46K | £5,952 | 1 |
Where Karolis Solutions Limited is registered
The registered office is in London (SE2), in the Bexley local authority area, London. Show SE2 9RH on a map.
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What happens if Karolis Solutions Limited files late
If the accounts reach Companies House today, the late filing penalty is £750 (£1,500 if last year's accounts were also late). It rises at each step below.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jun 2026 to 30 Jun 2026 | £150 |
| 1 to 3 months late | 1 Jul 2026 to 31 Aug 2026 | £375 |
| 3 to 6 months late | 1 Sep 2026 to 30 Nov 2026 | £750 |
| More than 6 months late | From 1 Dec 2026 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2026 | £200 |
| 3 months late | 30 Nov 2026 | another £200 |
| 6 months late | 28 Feb 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 2027 | 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
- 12172477
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 23 August 2019 (7 years ago)
- Registered office
- 24A Wilton Road, London, SE2 9RH
- Nature of business
- Construction of railways and underground railways (SIC 42120)
- Year end
- 31 August (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 August 2024
- Last confirmation statement
- 22 August 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.
- Kasab Limited2024
- Katardino Monten for General Contracting and Supplies Ltd2026
- Kaur Civils Limited2026
- Kay Environment Limited2025
- Kaydson Ltd2024
- Kcea Limited2016
- KCR Engineering Ltd2025
- KDL Civil Solutions Ltd2026
All civil engineering contractors in London · All trades in London · Civil engineering across the UK
Frequently asked questions
When are Karolis Solutions Limited's accounts due?
Karolis Solutions Limited's accounts were due at Companies House on 31 May 2026 and the register shows them as overdue.
When is Karolis Solutions Limited's CT600 due?
The CT600 for the period to 31 August 2025 is due at HMRC by 31 August 2026, 12 months after the period end. The corporation tax itself is payable earlier, by 1 June 2026.
Is Karolis Solutions Limited still trading?
Karolis Solutions Limited is listed as active on the Companies House register (checked 12 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 Karolis Solutions Limited do?
Karolis Solutions Limited is registered under Construction of railways and underground railways (SIC 42120).
How old is Karolis Solutions Limited?
Karolis Solutions Limited was incorporated on 23 August 2019, 7 years ago.
What is the penalty if Karolis Solutions 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 Karolis Solutions Limited on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 12 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.