- Companies
- Civil engineering
- St Helens
- C-Probe Systems Limited
C-Probe Systems Limited
- Company number
- 04824597
- Incorporated
- 8 Jul 200323 years trading
- Registered office
- Unit 2 Sherdley Road Industrial Estate, Wharton Street, St Helens, Lancashire, WA9 5AA
- Nature of business
- Construction of utility projects for fluids
C-Probe Systems Limited is a 23-year-old private limited company registered in St Helens, company number 04824597, one of 12 civil engineering contractors in St Helens. Its next accounts are due at Companies House on 30 September 2027, and the CT600 for the period to 31 December 2026 is due at HMRC on 31 December 2027.
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 £166K (+80%) on the year before, to -£42K.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- Current assets of £1.2M against £1.3M owed within a year: 1.0 times cover.
- 5 employees on average, up from 4 the year before.
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2025 | -£42K | £39 | £1.2M | £1.3M | 5 |
| 31 Dec 2024 | -£208K | £41 | £980K | £1.2M | 4 |
| 31 Dec 2023 | -£261K | £55 | £851K | £1.1M | 5 |
| 31 Dec 2022 | £285K | £2,959 | £1.4M | £1.1M | 5 |
| 31 Dec 2021 | -£105K | £203 | £659K | £649K | 6 |
| 31 Dec 2020 | -£75K | £13K | £592K | £502K | 6 |
| 31 Dec 2019 | -£191K | £1,322 | £381K | £497K | 5 |
| 31 Dec 2018 | -£319K | £117 | £292K | £565K | 5 |
| 31 Dec 2017 | -£137K | £5,869 | £363K | £385K | 5 |
| 31 Dec 2016 | £5,083 | £349 | £343K | £283K | 5 |
Public contracts won
C-Probe Systems Limited has one public sector contract award on record; the ones with their own published value total £123K (2025). Source: Contracts Finder and Find a Tender award notices. These were matched by the company's exact name because the notice gave no company number.
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| West Lothian Council | Monitoring of Cathodic Protection Systems | £123K | 12 Sep 2025 |
Where C-Probe Systems Limited is registered
The registered office is in St Helens (WA9), in the St. Helens local authority area, North West. Show WA9 5AA on a map.
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What happens if C-Probe Systems Limited 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 30 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2027 to 31 Oct 2027 | £150 |
| 1 to 3 months late | 1 Nov 2027 to 31 Dec 2027 | £375 |
| 3 to 6 months late | 1 Jan 2028 to 31 Mar 2028 | £750 |
| More than 6 months late | From 1 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2028 | £200 |
| 3 months late | 31 Mar 2028 | another £200 |
| 6 months late | 30 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 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
- 04824597
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 8 July 2003 (23 years ago)
- Registered office
- Unit 2 Sherdley Road Industrial Estate, Wharton Street, St Helens, Lancashire, WA9 5AA
- Nature of business
- Construction of utility projects for fluids (SIC 42210)
- Year end
- 31 December (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 8 July 2026
- Charges (mortgages)
- 1 outstanding of 6 registered
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 St Helens
Other active civil engineering contractors registered in St Helens.
- D G Rebar Ltd2015
- Electrification Services (UK) Limited2022
- Elliot Stocks Ltd2024
- Gibbs Surfacing (Northern) Limited2022
- Heeney Civils Limited2005
- Heneghan UK Limited2014
- N Clarke Limited2003
- PT Civils Limited2023
All civil engineering contractors in St Helens · All trades in St Helens · Civil engineering across the UK
Frequently asked questions
When are C-Probe Systems Limited's accounts due?
C-Probe Systems Limited's next accounts are due at Companies House by 30 September 2027 (in 353 days), covering the period to 31 December 2026.
When is C-Probe Systems Limited's CT600 due?
The CT600 for the period to 31 December 2026 is due at HMRC by 31 December 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2027.
Is C-Probe Systems Limited still trading?
C-Probe Systems Limited 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 C-Probe Systems Limited do?
C-Probe Systems Limited is registered under Construction of utility projects for fluids (SIC 42210).
How old is C-Probe Systems Limited?
C-Probe Systems Limited was incorporated on 8 July 2003, 23 years ago.
Has C-Probe Systems Limited won public sector contracts?
Yes. C-Probe Systems Limited has one contract award from public bodies on Contracts Finder and Find a Tender (those with their own published value total £123K), most recently from West Lothian Council.
What is the penalty if C-Probe Systems 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 C-Probe Systems Limited 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.