- Companies
- Plumbers and heating engineers
- Portsmouth
- J H Ventilation Services Ltd
J H Ventilation Services Ltd
- Company number
- 07647801
- Incorporated
- 25 May 201115 years trading
- Registered office
- 24 Parkstone Avenue, Southsea, Portsmouth, PO4 0QZ
- Nature of business
- Plumbing, heat and air-conditioning installation
J H Ventilation Services Ltd is a 15-year-old private limited company registered in Portsmouth, company number 07647801, one of 141 plumbing and heating companies in Portsmouth. Its next accounts are due at Companies House on 28 February 2027, and the CT600 for the period to 31 May 2026 is due at HMRC on 31 May 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 up £433 (+7.5%) on the year before, to £6,230.
- Net assets rose in 7 of 9 year-on-year comparisons on record.
- 1 employee on average during the year.
- 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 |
|---|---|---|---|---|---|
| 31 May 2025 | £6,230 | £8,161 | 1 | ||
| 31 May 2024 | £5,797 | £4,844 | 1 | ||
| 31 May 2023 | £741 | £15K | 1 | ||
| 31 May 2022 | £113 | £13K | 1 | ||
| 31 May 2021 | £397 | £14K | 1 | ||
| 31 May 2020 | £7,996 | £7,794 | 1 | ||
| 31 May 2019 | £5,010 | £3,977 | |||
| 31 May 2018 | £4,691 | £3,804 | |||
| 31 May 2017 | £530 | £7,149 | |||
| 31 May 2016 | -£1,166 | £15K | £15K |
Where J H Ventilation Services Ltd is registered
The registered office is in Portsmouth (PO4), in the Portsmouth local authority area, South East. Show PO4 0QZ on a map.
Other trade companies in PO4
- Prestiige LtdMechanics and garages
- Portsea Homes LimitedProperty developers
- Elite Building Services (Portsmouth) LtdBuilders
- G Form Drylining LimitedPlasterers
- Solent Sales Haulage & Storage LtdMotor traders
- Koko Construction LtdBuilders
- Chase RCS LtdCivil engineering
- Proper Job Handyman LtdFinishing trades
What happens if J H Ventilation Services 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 28 February 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Mar 2027 to 31 Mar 2027 | £150 |
| 1 to 3 months late | 1 Apr 2027 to 31 May 2027 | £375 |
| 3 to 6 months late | 1 Jun 2027 to 31 Aug 2027 | £750 |
| More than 6 months late | From 1 Sep 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jun 2027 | £200 |
| 3 months late | 31 Aug 2027 | another £200 |
| 6 months late | 30 Nov 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 May 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
- 07647801
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 25 May 2011 (15 years ago)
- Registered office
- 24 Parkstone Avenue, Southsea, Portsmouth, PO4 0QZ
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 May (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 May 2025
- Last confirmation statement
- 25 May 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 Portsmouth
Other active plumbing and heating companies registered in Portsmouth.
- J P West Plumbing & Heating Ltd2019
- J&T Contracting Ltd2025
- J.L.H Mechanical Limited2018
- Jba Plumbing & Heating Limited2011
- JC Direct Plumbing and Heating Ltd2018
- JLM Mechanical Ltd2023
- JM Plumbing and Gas Limited2025
- JPH Plumbing and Heating Limited2022
All plumbing and heating companies in Portsmouth · All trades in Portsmouth · Plumbers and heating engineers across the UK
Frequently asked questions
When are J H Ventilation Services Ltd's accounts due?
J H Ventilation Services Ltd's next accounts are due at Companies House by 28 February 2027 (in 139 days), covering the period to 31 May 2026.
When is J H Ventilation Services Ltd's CT600 due?
The CT600 for the period to 31 May 2026 is due at HMRC by 31 May 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 March 2027.
Is J H Ventilation Services Ltd still trading?
J H Ventilation Services 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 J H Ventilation Services Ltd do?
J H Ventilation Services Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is J H Ventilation Services Ltd?
J H Ventilation Services Ltd was incorporated on 25 May 2011, 15 years ago.
What is the penalty if J H Ventilation Services 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 J H Ventilation Services 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.