- Companies
- Plumbers and heating engineers
- Mitcham
- Kmarsh Plumbing & Heating Ltd
Kmarsh Plumbing & Heating Ltd
- Company number
- 11720019
- Incorporated
- 10 Dec 20187 years trading
- Registered office
- 36 Berkshire Way, Mitcham, CR4 1QT
- Nature of business
- Plumbing, heat and air-conditioning installation
Kmarsh Plumbing & Heating Ltd is a 7-year-old private limited company registered in Mitcham, company number 11720019, one of 50 plumbing and heating companies in Mitcham. Its next accounts are due at Companies House on 31 December 2026, and its first CT600 is due at HMRC on 31 December 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 up £11K (+22.8%) on the year before, to £58K.
- Net assets rose in 5 of 5 year-on-year comparisons on record.
- 5 employees on average during the year.
- Balance sheets on record for 6 years, 2019 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2024 | £58K | £51K | 5 | ||
| 31 Dec 2023 | £47K | £34K | £0 | 5 | |
| 31 Dec 2022 | £22K | £28K | 5 | ||
| 31 Dec 2021 | £9,221 | £24K | 4 | ||
| 31 Dec 2020 | £7,734 | £34K | 7 | ||
| 31 Dec 2019 | £2,015 | £10K | £7,985 | 5 |
Where Kmarsh Plumbing & Heating Ltd is registered
The registered office is in Mitcham (CR4), in the Merton local authority area, London. Show CR4 1QT on a map.
Other trade companies in CR4
- Mendevo LimitedFloor and wall tilers
- Az Auto Body Repair LtdMechanics and garages
- Welcome Maintenance LimitedPainters and decorators
- Fixmot LtdMechanics and garages
- MPB Property Care LtdFinishing trades
- Aoo Building Services LtdBuilders
- LDN Plumbing Heating and Cooling LimitedPlumbers and heating engineers
- Dgha Construction LtdBuilders
What happens if Kmarsh Plumbing & Heating 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 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
- 11720019
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 10 December 2018 (7 years ago)
- Registered office
- 36 Berkshire Way, Mitcham, CR4 1QT
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 30 December (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 December 2024
- Last confirmation statement
- 9 December 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 Mitcham
Other active plumbing and heating companies registered in Mitcham.
- KS Pipework Ltd2026
- KS Plumbing Ltd2019
- Lalux Operations Ltd2020
- Lalux Plumbing Services Ltd2024
- LDN Plumbing Heating and Cooling Limited2026
- Materialistic Limited2024
- Mekkmaster Heating Ltd2018
- Mep Plumbing Ltd2025
All plumbing and heating companies in Mitcham · All trades in Mitcham · Plumbers and heating engineers across the UK
Frequently asked questions
When are Kmarsh Plumbing & Heating Ltd's accounts due?
Kmarsh Plumbing & Heating Ltd's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is Kmarsh Plumbing & Heating Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 31 December 2025, due by 31 December 2026, and one for the period to 31 March 2026, due by 31 March 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Kmarsh Plumbing & Heating Ltd still trading?
Kmarsh Plumbing & Heating 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 Kmarsh Plumbing & Heating Ltd do?
Kmarsh Plumbing & Heating Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Kmarsh Plumbing & Heating Ltd?
Kmarsh Plumbing & Heating Ltd was incorporated on 10 December 2018, 7 years ago.
What is the penalty if Kmarsh Plumbing & Heating 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 Kmarsh Plumbing & Heating 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.