- Companies
- Plumbers and heating engineers
- London
- Paulmark Ventilation Limited
Paulmark Ventilation Limited
- Company number
- 02786248
- Incorporated
- 3 Feb 199333 years trading
- Registered office
- Thomas Harris 1929 Shop Merton Abbey Mills, 18 Watermill Way, London, SW19 2RD
- Nature of business
- Plumbing, heat and air-conditioning installation
Paulmark Ventilation Limited is a 33-year-old private limited company registered in London, company number 02786248, one of 2,972 plumbing and heating companies in London. Its next accounts are due at Companies House on 30 June 2027, and the CT600 for the period to 30 September 2026 is due at HMRC on 30 September 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 £91K (-9%) on the year before, to £924K.
- Net assets rose in 6 of 9 year-on-year comparisons on record.
- Current assets of £886K against £229K owed within a year: 3.9 times cover.
- 16 employees on average, up from 13 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 |
|---|---|---|---|---|---|
| 30 Sep 2025 | £924K | £539K | £886K | £229K | 16 |
| 30 Sep 2024 | £1M | £743K | £1.2M | £251K | 13 |
| 30 Sep 2023 | £1M | £1.2M | £315K | 13 | |
| 30 Sep 2022 | £941K | £1.2M | £324K | 2 | |
| 30 Sep 2021 | £664K | £813K | £191K | 2 | |
| 30 Sep 2020 | £463K | £629K | £191K | 2 | |
| 30 Sep 2019 | £164K | £276K | £117K | 2 | |
| 30 Sep 2018 | £125K | £233K | £109K | 8 | |
| 30 Sep 2017 | £78K | £142K | £85K | 8 | |
| 30 Sep 2016 | £85K | £18K | £177K | £102K |
Who runs and owns Paulmark Ventilation Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| A*** S*** | Director | Jun 2014 |
5 former officers
| Name | Role | Appointed | Left |
|---|---|---|---|
| R*** S*** | Secretary | Feb 1993 | May 2017 |
| London Law Secretarial Limited | Corporate Nominee Secretary | Feb 1993 | Feb 1993 |
| R*** S*** | Director | Feb 1993 | May 2017 |
| T*** W*** | Director | Feb 1993 | Oct 2010 |
| London Law Services Limited | Nominee director (company) | Feb 1993 | Feb 1993 |
Person with significant control
Charges (secured borrowing)
All 1 registered charge has been satisfied. A charge is security a lender takes over a company's assets, typically for a loan, mortgage or asset finance.
| Lender | Status | Registered |
|---|---|---|
| First National Bank PLC | Satisfied May 2024 | Jan 1997 |
Where Paulmark Ventilation Limited is registered
The registered office is in London (SW19), in the Merton local authority area, London. Show SW19 2RD on a map.
Other trade companies in SW19
- Firstfixlondon Ltd.Builders
- Rainbow One Construction UK LtdSpecialist contractors
- Base Bloc LimitedBuilders
- Concealed Climate LimitedPlumbers and heating engineers
- Morningside LtdProperty developers
- Cupi-Building LtdBuilders
- Crown Infra London LtdBuilders
- Aj & Co One LtdProperty developers
Shared registered office
38 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if Paulmark Ventilation 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 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jul 2027 to 31 Jul 2027 | £150 |
| 1 to 3 months late | 1 Aug 2027 to 30 Sep 2027 | £375 |
| 3 to 6 months late | 1 Oct 2027 to 31 Dec 2027 | £750 |
| More than 6 months late | From 1 Jan 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2027 | £200 |
| 3 months late | 30 Dec 2027 | another £200 |
| 6 months late | 30 Mar 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 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
- 02786248
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 3 February 1993 (33 years ago)
- Registered office
- Thomas Harris 1929 Shop Merton Abbey Mills, 18 Watermill Way, London, SW19 2RD
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 30 September (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 September 2025
- Last confirmation statement
- 31 October 2025
- Charges (mortgages)
- 0 outstanding of 1 registered
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 London
Other active plumbing and heating companies registered in London.
- Pav Heating and Plumbing Ltd2019
- Paxton Services London Limited2000
- PB Aqua Control Ltd2015
- PB Heating Ltd2019
- PCG3 Services Ltd2020
- Pe Moran Ltd2025
- Peachy Plumb Ltd2023
- Peakflow Plumbing & Heating Ltd2026
All plumbing and heating companies in London · All trades in London · Plumbers and heating engineers across the UK
Frequently asked questions
When are Paulmark Ventilation Limited's accounts due?
Paulmark Ventilation Limited's next accounts are due at Companies House by 30 June 2027 (in 261 days), covering the period to 30 September 2026.
When is Paulmark Ventilation Limited's CT600 due?
The CT600 for the period to 30 September 2026 is due at HMRC by 30 September 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 July 2027.
Is Paulmark Ventilation Limited still trading?
Paulmark Ventilation 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 Paulmark Ventilation Limited do?
Paulmark Ventilation Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Paulmark Ventilation Limited?
Paulmark Ventilation Limited was incorporated on 3 February 1993, 33 years ago.
Who runs Paulmark Ventilation Limited?
Paulmark Ventilation Limited has 1 active director, the longest-serving appointed in Jun 2014. Their names and service addresses are on the Companies House register.
Who owns Paulmark Ventilation Limited?
One person or company has significant control of Paulmark Ventilation Limited: an individual (owns 75% or more of the shares).
What is the penalty if Paulmark Ventilation 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 Paulmark Ventilation 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.