- Companies
- Plumbers and heating engineers
- Runcorn
- MC Leak Detection Limited
MC Leak Detection Limited
- Company number
- 15559768
- Incorporated
- 13 Mar 20242 years trading
- Registered office
- 45 Latham Avenue, Runcorn, WA7 5DT
- Nature of business
- Plumbing, heat and air-conditioning installation
MC Leak Detection Limited is a 2-year-old private limited company registered in Runcorn, company number 15559768, one of 26 plumbing and heating companies in Runcorn. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2025
From the balance sheet at 31 March 2025, as filed at Companies House.
Where MC Leak Detection Limited is registered
The registered office is in Runcorn (WA7), in the Halton local authority area, North West. Show WA7 5DT on a map.
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- Bridgebrook Property Management LtdProperty developers
What happens if MC Leak Detection 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 31 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 15559768
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 13 March 2024 (2 years ago)
- Registered office
- 45 Latham Avenue, Runcorn, WA7 5DT
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 12 March 2026
Filing notes for plumbing and heating companies
Plumbing and heating companies frequently work under CIS for main contractors and also directly for homeowners, so turnover can mix CIS and non-CIS income.
Similar companies in Runcorn
Other active plumbing and heating companies registered in Runcorn.
- Meac Limited2026
- MG Gas Ltd2023
- Norton Plumbing & Heating Solutions Ltd2025
- Safeway Gas Services Ltd2020
- Talk Heating and Plumbing Services Limited2016
- The Gas Store Home Services Ltd2011
- Titan Energy Ltd2025
- Webster Plumbing Ltd2022
All plumbing and heating companies in Runcorn · All trades in Runcorn · Plumbers and heating engineers across the UK
Frequently asked questions
When are MC Leak Detection Limited's accounts due?
MC Leak Detection Limited's next accounts are due at Companies House by 31 December 2026 (in 80 days), covering the period to 31 March 2026.
When is MC Leak Detection Limited's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is MC Leak Detection Limited still trading?
MC Leak Detection 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 MC Leak Detection Limited do?
MC Leak Detection Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is MC Leak Detection Limited?
MC Leak Detection Limited was incorporated on 13 March 2024, 2 years ago.
What is the penalty if MC Leak Detection 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 MC Leak Detection 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.