- Companies
- Electricians
- Bournemouth
- Isg Ventilation Ltd
Isg Ventilation Ltd
- Company number
- 10721781
- Incorporated
- 12 Apr 20179 years trading
- Registered office
- Flat 30A Richmond Chambers, Richmond Hill, Bournemouth, BH2 6EE
- Nature of business
- Electrical installation; Plumbing, heat and air-conditioning installation; Other specialised construction activities n.e.c.
Isg Ventilation Ltd is a 9-year-old private limited company registered in Bournemouth, company number 10721781, one of 157 electrical contractors in Bournemouth. Its next accounts are due at Companies House on 31 January 2027, and the CT600 for the period to 30 April 2026 is due at HMRC on 30 April 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 unchanged on the year before, at -£5,632.
- Net assets rose in 2 of 7 year-on-year comparisons on record.
- Current assets of £511 against £4,742 owed within a year: 0.1 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 8 years, 2018 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Apr 2025 | -£5,632 | £0 | £511 | £4,742 | 0 |
| 30 Apr 2024 | -£5,632 | £5,955 | £6,466 | £9,176 | 0 |
| 30 Apr 2023 | -£5,514 | £5,955 | £6,466 | £7,737 | 0 |
| 30 Apr 2022 | -£4,740 | £5,995 | £6,506 | £5,515 | 2 |
| 30 Apr 2021 | -£541 | £6,112 | £6,623 | £164 | 2 |
| 30 Apr 2020 | -£1,239 | £57 | £3,669 | £4,908 | 2 |
| 30 Apr 2019 | £3,146 | £12 | £5,156 | £2,010 | |
| 30 Apr 2018 | £1,923 | £157 | £3,933 | £2,010 |
Where Isg Ventilation Ltd is registered
The registered office is in Bournemouth (BH2), in the Bournemouth, Christchurch and Poole local authority area, South West. Show BH2 6EE on a map.
Other trade companies in BH2
- The Spotless Guys Cleaning LtdCleaning companies
- Ampair HVAC LimitedPlumbers and heating engineers
- Signature Bathrooms and Kitchens LtdProperty developers
- Timilehinadewoye LimitedPlumbers and heating engineers
- Solis Vesta Developments LtdProperty developers
- Magic Blade Repair LimitedMachinery repair and installation
- Phoneboss Bournemouth LtdMachinery repair and installation
- Nationwide Foam Removals and Insulation LtdRoofers
What happens if Isg Ventilation 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 January 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Feb 2027 to 28 Feb 2027 | £150 |
| 1 to 3 months late | 1 Mar 2027 to 30 Apr 2027 | £375 |
| 3 to 6 months late | 1 May 2027 to 31 Jul 2027 | £750 |
| More than 6 months late | From 1 Aug 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 May 2027 | £200 |
| 3 months late | 30 Jul 2027 | another £200 |
| 6 months late | 30 Oct 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Apr 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
- 10721781
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 12 April 2017 (9 years ago)
- Registered office
- Flat 30A Richmond Chambers, Richmond Hill, Bournemouth, BH2 6EE
- Nature of business
- Electrical installation (SIC 43210)
Plumbing, heat and air-conditioning installation (SIC 43220)
Other specialised construction activities n.e.c. (SIC 43999) - Year end
- 30 April (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 April 2025
- Last confirmation statement
- 25 September 2025
Filing notes for electrical contractors
Electrical contracting companies are often a director plus a van and tools. Most fall within the micro-entity rules, so the accounts filed at Companies House are short, and the CT600 carries the tax detail.
Similar companies in Bournemouth
Other active electrical contractors registered in Bournemouth.
- Iswitch Electrical Services Ltd2021
- JBH Electrical Services Ltd2020
- JBT Electrical Services Ltd2025
- JD Electrical Bournemouth Ltd2015
- Jezelec Limited2016
- Jme Energy Ltd2023
- JMW Electrical Services (Bournemouth) Limited2013
- JNM Electrical Limited2018
All electrical contractors in Bournemouth · All trades in Bournemouth · Electricians across the UK
Frequently asked questions
When are Isg Ventilation Ltd's accounts due?
Isg Ventilation Ltd's next accounts are due at Companies House by 31 January 2027 (in 111 days), covering the period to 30 April 2026.
When is Isg Ventilation Ltd's CT600 due?
The CT600 for the period to 30 April 2026 is due at HMRC by 30 April 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 February 2027.
Is Isg Ventilation Ltd still trading?
Isg Ventilation Ltd is listed as active on the Companies House register (checked 12 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 Isg Ventilation Ltd do?
Isg Ventilation Ltd is registered under Electrical installation (SIC 43210); Plumbing, heat and air-conditioning installation (SIC 43220); Other specialised construction activities n.e.c. (SIC 43999).
How old is Isg Ventilation Ltd?
Isg Ventilation Ltd was incorporated on 12 April 2017, 9 years ago.
What is the penalty if Isg Ventilation 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 Isg Ventilation Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 12 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.