- Companies
- Machinery repair and installation
- Southampton
- Zener Marine Electrical Services Ltd
Zener Marine Electrical Services Ltd
- Company number
- 12068716
- Incorporated
- 25 Jun 20197 years trading
- Registered office
- 3 Denzil Avenue, Netley Abbey, Southampton, Hampshire, SO31 5AZ
- Nature of business
- Repair of electrical equipment; Repair and maintenance of ships and boats; Engineering related scientific and technical consulting activities
Zener Marine Electrical Services Ltd is a 7-year-old private limited company registered in Southampton, company number 12068716, one of 224 machinery repair and installation companies in Southampton. Its next accounts are due at Companies House on 31 March 2027, and the CT600 for the period to 30 June 2026 is due at HMRC on 30 June 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 £19K (-104.5%) on the year before, to -£814.
- Net assets rose in 1 of 5 year-on-year comparisons on record.
- Current assets of £10K against £13K owed within a year: 0.8 times cover.
- 5 employees on average during the year.
- Balance sheets on record for 6 years, 2020 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Jun 2025 | -£814 | £2,642 | £10K | £13K | 5 |
| 30 Jun 2024 | £18K | £2,024 | £17K | £18K | 5 |
| 30 Jun 2023 | £32K | £4,532 | £24K | £9,715 | 5 |
| 30 Jun 2022 | £47K | £0 | £53K | £18K | 4 |
| 30 Jun 2021 | -£8,457 | £3,112 | £28K | £27K | 2 |
| 30 Jun 2020 | £6,870 | £16K | £19K | £14K | 2 |
Who runs and owns Zener Marine Electrical Services Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| S*** P*** | Director | Jun 2019 |
1 former officer
| Name | Role | Appointed | Left |
|---|---|---|---|
| W*** S*** | Director | Jun 2019 | Nov 2021 |
Person with significant control
Where Zener Marine Electrical Services Ltd is registered
The registered office is in Southampton (SO31), in the Eastleigh local authority area, South East. Show SO31 5AZ on a map.
Other trade companies in SO31
- MNC Cleaning LtdCleaning companies
- Mars Eng. LtdMachinery repair and installation
- Amc Plumbing and Heating LtdPlumbers and heating engineers
- Pride & Bloom LtdLandscapers and gardeners
- Hampshire Heating and Cooling LtdPlumbers and heating engineers
- Kelpie Landscape & Build LtdFinishing trades
- FSC Facilities Services LtdInstallers
- Fitton & Redding Services LimitedMechanics and garages
What happens if Zener Marine Electrical 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 31 March 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Apr 2027 to 30 Apr 2027 | £150 |
| 1 to 3 months late | 1 May 2027 to 30 Jun 2027 | £375 |
| 3 to 6 months late | 1 Jul 2027 to 30 Sep 2027 | £750 |
| More than 6 months late | From 1 Oct 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jul 2027 | £200 |
| 3 months late | 30 Sep 2027 | another £200 |
| 6 months late | 30 Dec 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Jun 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
- 12068716
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 25 June 2019 (7 years ago)
- Registered office
- 3 Denzil Avenue, Netley Abbey, Southampton, Hampshire, SO31 5AZ
- Nature of business
- Repair of electrical equipment (SIC 33140)
Repair and maintenance of ships and boats (SIC 33150)
Engineering related scientific and technical consulting activities (SIC 71122) - Year end
- 30 June (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 June 2025
- Last confirmation statement
- 12 March 2026
Filing notes for machinery repair and installation companies
Machinery repair and installation companies often carry parts stock and specialist tools, and many work on contracts that span the year end.
Similar companies in Southampton
Other active machinery repair and installation companies registered in Southampton.
- 360 Plant Services Limited2015
- 4Tek Electronics Limited2024
- A P Tools Limited2002
- A Watts Marine Electrical Limited2025
- A1 Marine Electronics Limited2020
- Aaron Cooper Racing Ltd2023
- Ab Welding Services Ltd2020
- Ace Marine Services & Solutions Ltd2010
All machinery repair and installation companies in Southampton · All trades in Southampton · Machinery repair and installation across the UK
Frequently asked questions
When are Zener Marine Electrical Services Ltd's accounts due?
Zener Marine Electrical Services Ltd's next accounts are due at Companies House by 31 March 2027 (in 169 days), covering the period to 30 June 2026.
When is Zener Marine Electrical Services Ltd's CT600 due?
The CT600 for the period to 30 June 2026 is due at HMRC by 30 June 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 April 2027.
Is Zener Marine Electrical Services Ltd still trading?
Zener Marine Electrical 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 Zener Marine Electrical Services Ltd do?
Zener Marine Electrical Services Ltd is registered under Repair of electrical equipment (SIC 33140); Repair and maintenance of ships and boats (SIC 33150); Engineering related scientific and technical consulting activities (SIC 71122).
How old is Zener Marine Electrical Services Ltd?
Zener Marine Electrical Services Ltd was incorporated on 25 June 2019, 7 years ago.
Who runs Zener Marine Electrical Services Ltd?
Zener Marine Electrical Services Ltd has 1 active director, the longest-serving appointed in Jun 2019. Their names and service addresses are on the Companies House register.
Who owns Zener Marine Electrical Services Ltd?
One person or company has significant control of Zener Marine Electrical Services Ltd: an individual (owns 25% to 50% of the shares).
What is the penalty if Zener Marine Electrical 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 Zener Marine Electrical 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.