- Companies
- Machinery repair and installation
- Southampton
- Code Zero Limited
Code Zero Limited
- Company number
- 05270998
- Incorporated
- 27 Oct 200421 years trading
- Registered office
- 16 River Green, Hamble, Southampton, SO31 4JA
- Nature of business
- Repair of other equipment; Wholesale of computers, computer peripheral equipment and software; Other professional, scientific and technical activities n.e.c.
Code Zero Limited is a 21-year-old private limited company registered in Southampton, company number 05270998, one of 224 machinery repair and installation companies in Southampton. Its next accounts are due at Companies House on 30 September 2027, and the CT600 for the period to 31 December 2026 is due at HMRC on 31 December 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 £149K (+280.1%) on the year before, to £203K.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- Current assets of £448K against £247K owed within a year: 1.8 times cover.
- 2 employees 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 Dec 2025 | £203K | £226K | £448K | £247K | 2 |
| 31 Dec 2024 | £53K | £99K | £291K | £240K | 2 |
| 31 Dec 2023 | £73K | £206K | £296K | £227K | 2 |
| 31 Dec 2022 | £75K | £138K | £176K | £106K | 2 |
| 31 Dec 2021 | £138K | £161K | £233K | £101K | 2 |
| 31 Dec 2020 | £111K | £106K | £244K | £97K | 2 |
| 31 Dec 2019 | £119K | £106K | £175K | £64K | 2 |
| 31 Dec 2018 | £72K | £74K | £121K | £59K | 2 |
| 31 Dec 2017 | £43K | £37K | £92K | £60K | 2 |
| 31 Dec 2016 | £28K | £18K | £71K | £58K | 2 |
Where Code Zero Limited is registered
The registered office is in Southampton (SO31), in the Eastleigh local authority area, South East. Show SO31 4JA 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
Also registered at this address
1 other company uses the same registered office as Code Zero Limited.
- Afloat Marine Services LtdMachinery repair and installation
What happens if Code Zero 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 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2027 to 31 Oct 2027 | £150 |
| 1 to 3 months late | 1 Nov 2027 to 31 Dec 2027 | £375 |
| 3 to 6 months late | 1 Jan 2028 to 31 Mar 2028 | £750 |
| More than 6 months late | From 1 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2028 | £200 |
| 3 months late | 31 Mar 2028 | another £200 |
| 6 months late | 30 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 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
- 05270998
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 27 October 2004 (21 years ago)
- Registered office
- 16 River Green, Hamble, Southampton, SO31 4JA
- Nature of business
- Repair of other equipment (SIC 33190)
Wholesale of computers, computer peripheral equipment and software (SIC 46510)
Other professional, scientific and technical activities n.e.c. (SIC 74909) - Year end
- 31 December (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 26 October 2025
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.
- Collicutt Limited2019
- Commercial Laundry & Electrical Services Limited2021
- Container Services (Solent) Limited1999
- Curran Dental Engineers Limited2005
- D.E.S.S. Limited2003
- D7 Marine Ltd2016
- Danston Ltd2008
- David James Fabrications & Welding Ltd2013
All machinery repair and installation companies in Southampton · All trades in Southampton · Machinery repair and installation across the UK
Frequently asked questions
When are Code Zero Limited's accounts due?
Code Zero Limited's next accounts are due at Companies House by 30 September 2027 (in 353 days), covering the period to 31 December 2026.
When is Code Zero Limited's CT600 due?
The CT600 for the period to 31 December 2026 is due at HMRC by 31 December 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2027.
Is Code Zero Limited still trading?
Code Zero 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 Code Zero Limited do?
Code Zero Limited is registered under Repair of other equipment (SIC 33190); Wholesale of computers, computer peripheral equipment and software (SIC 46510); Other professional, scientific and technical activities n.e.c. (SIC 74909).
How old is Code Zero Limited?
Code Zero Limited was incorporated on 27 October 2004, 21 years ago.
What is the penalty if Code Zero 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 Code Zero 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.