- Companies
- Plumbers and heating engineers
- On Line Plumbing & Heating Ltd
On Line Plumbing & Heating Ltd
- Company number
- 04244704
- Incorporated
- 2 Jul 200125 years trading
- Registered office
- 28 Quarry Road, London, SW18 2QJ
- Nature of business
- Plumbing, heat and air-conditioning installation
On Line Plumbing & Heating Ltd is a 25-year-old private limited company, company number 04244704, one of the UK's plumbing and heating companies. Its next accounts are due at Companies House on 31 December 2027, and the CT600 for the period to 31 March 2027 is due at HMRC on 31 March 2028.
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 £22K (+7.9%) on the year before, to £294K.
- Net assets rose in 7 of 7 year-on-year comparisons on record.
- Current assets of £318K against £27K owed within a year: more than 10 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 8 years, 2019 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2026 | £294K | £318K | £27K | 2 | |
| 31 Mar 2025 | £273K | £296K | £27K | 2 | |
| 31 Mar 2024 | £251K | £271K | £24K | 2 | |
| 31 Mar 2023 | £236K | £259K | £28K | 2 | |
| 31 Mar 2022 | £205K | £224K | £26K | 2 | |
| 31 Mar 2021 | £173K | £187K | £24K | 2 | |
| 31 Mar 2020 | £155K | £166K | £24K | 2 | |
| 31 Mar 2019 | £128K | £152K | £26K | 2 |
Where On Line Plumbing & Heating Ltd is registered
The registered office is in the SW18 postcode district, in the Wandsworth local authority area, London. Show SW18 2QJ on a map.
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- Straightedge Builders LtdProperty developers
- Parsons Green Re Design & Build LimitedProperty developers
- Home Appliances Repair LimitedRepair services
- 34 & 34A Lambrook Terrace Freehold LtdProperty developers
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- Fircroft Group LimitedProperty developers
What happens if On Line 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 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2028 to 31 Jan 2028 | £150 |
| 1 to 3 months late | 1 Feb 2028 to 31 Mar 2028 | £375 |
| 3 to 6 months late | 1 Apr 2028 to 30 Jun 2028 | £750 |
| More than 6 months late | From 1 Jul 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2028 | £200 |
| 3 months late | 30 Jun 2028 | another £200 |
| 6 months late | 30 Sep 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 2029 | 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
- 04244704
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 2 July 2001 (25 years ago)
- Registered office
- 28 Quarry Road, London, SW18 2QJ
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2026
- Last confirmation statement
- 2 July 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
Other active plumbing and heating companies.
Frequently asked questions
When are On Line Plumbing & Heating Ltd's accounts due?
On Line Plumbing & Heating Ltd's next accounts are due at Companies House by 31 December 2027 (in 444 days), covering the period to 31 March 2027.
When is On Line Plumbing & Heating Ltd's CT600 due?
The CT600 for the period to 31 March 2027 is due at HMRC by 31 March 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2028.
Is On Line Plumbing & Heating Ltd still trading?
On Line 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 On Line Plumbing & Heating Ltd do?
On Line Plumbing & Heating Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is On Line Plumbing & Heating Ltd?
On Line Plumbing & Heating Ltd was incorporated on 2 July 2001, 25 years ago.
What is the penalty if On Line 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 On Line 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.