- Companies
- Plumbers and heating engineers
- Liverpool
- Mersey Mechanical Ltd
Mersey Mechanical Ltd
- Company number
- 12939428
- Incorporated
- 8 Oct 20206 years trading
- Registered office
- 38 Farriers Way, Bootle, Liverpool, Merseyside, L30 4XL
- Nature of business
- Plumbing, heat and air-conditioning installation
Mersey Mechanical Ltd is a 6-year-old private limited company registered in Liverpool, company number 12939428, one of 377 plumbing and heating companies in Liverpool. Its next accounts are due at Companies House on 31 July 2027, and the CT600 for the period to 31 October 2026 is due at HMRC on 31 October 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 down £8,079 (-44.7%) on the year before, to £10K.
- Net assets rose in 1 of 4 year-on-year comparisons on record.
- Current assets of £2,000 against £12K owed within a year: 0.2 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 5 years, 2021 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Oct 2025 | £10K | £2,000 | £12K | 1 | |
| 31 Oct 2024 | £18K | £3,001 | £15K | 1 | |
| 31 Oct 2023 | £23K | £10K | £19K | 1 | |
| 31 Oct 2022 | £100 | ||||
| 31 Oct 2021 | £100 |
Where Mersey Mechanical Ltd is registered
The registered office is in Liverpool (L30), in the Sefton local authority area, North West. Show L30 4XL on a map.
Other trade companies in L30
- Le Telecoms LtdInstallers
- Freonairconditioning LtdPlumbers and heating engineers
- Arkane Refinishing LtdMechanics and garages
- Djcarroll Decorators LtdPainters and decorators
- Thompson Exterior Cleans LtdCleaning companies
- Bluegate Electrical LtdElectricians
- Restore Roofing and Facilities Maintenance LimitedProperty developers
- T Power Civils LtdSpecialist contractors
Also registered at this address
2 other companies use the same registered office as Mersey Mechanical Ltd.
- CBC Maintenance LtdPlumbers and heating engineers
- Green Green Energy LtdPlumbers and heating engineers
What happens if Mersey Mechanical 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 July 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Aug 2027 to 31 Aug 2027 | £150 |
| 1 to 3 months late | 1 Sep 2027 to 31 Oct 2027 | £375 |
| 3 to 6 months late | 1 Nov 2027 to 31 Jan 2028 | £750 |
| More than 6 months late | From 1 Feb 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Nov 2027 | £200 |
| 3 months late | 31 Jan 2028 | another £200 |
| 6 months late | 30 Apr 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Oct 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
- 12939428
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 8 October 2020 (6 years ago)
- Registered office
- 38 Farriers Way, Bootle, Liverpool, Merseyside, L30 4XL
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 October (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 October 2025
- Last confirmation statement
- 21 November 2025
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 Liverpool
Other active plumbing and heating companies registered in Liverpool.
- Mersey Prime Ltd2020
- Merseyfix Plumbing & Heating Ltd2025
- Merseyflush Ltd2024
- Merseyside Air Conditioning Ltd2025
- Merseyside Central Heating Limited1989
- Merseyside Central Heating Renewables Limited2013
- Merseyside Heating & Plumbing Limited1985
- MH Gas Service Ltd2023
All plumbing and heating companies in Liverpool · All trades in Liverpool · Plumbers and heating engineers across the UK
Frequently asked questions
When are Mersey Mechanical Ltd's accounts due?
Mersey Mechanical Ltd's next accounts are due at Companies House by 31 July 2027 (in 291 days), covering the period to 31 October 2026.
When is Mersey Mechanical Ltd's CT600 due?
The CT600 for the period to 31 October 2026 is due at HMRC by 31 October 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 August 2027.
Is Mersey Mechanical Ltd still trading?
Mersey Mechanical 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 Mersey Mechanical Ltd do?
Mersey Mechanical Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Mersey Mechanical Ltd?
Mersey Mechanical Ltd was incorporated on 8 October 2020, 6 years ago.
What is the penalty if Mersey Mechanical 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 Mersey Mechanical 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.