- Companies
- Installers
- Southampton
- Security Southampton Limited
Security Southampton Limited
- Company number
- 13357125
- Incorporated
- 26 Apr 20215 years trading
- Registered office
- 4 Valentine Avenue, Sholing, Southampton, Hampshire, SO19 0ER
- Nature of business
- Other construction installation
Security Southampton Limited is a 5-year-old private limited company registered in Southampton, company number 13357125, one of 132 installation companies (insulation, lifts, shutters and similar) in Southampton. 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 up £25K (+281.2%) on the year before, to £16K.
- Net assets rose in 1 of 3 year-on-year comparisons on record.
- Current assets of £49K against £37K owed within a year: 1.3 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 4 years, 2022 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Apr 2025 | £16K | £49K | £37K | 0 | |
| 30 Apr 2024 | -£8,915 | £91 | £13K | 2 | |
| 30 Apr 2023 | £139 | £14K | £19K | 2 | |
| 30 Apr 2022 | £7,124 | £12K | £8,755 | 2 |
Where Security Southampton Limited is registered
The registered office is in Southampton (SO19), in the Southampton local authority area, South East. Show SO19 0ER on a map.
Other trade companies in SO19
- 4LK Cleaning Company LtdCleaning companies
- Nest Path Properties LimitedBuilders
- Dautaj Groundworks LtdBuilders
- Craftline Carpentry Services LtdJoiners and carpenters
- Agape-Wise LimitedCleaning companies
- Cool Enterprises LtdPlumbers and heating engineers
- Jmac Carpentry & Building LtdPlasterers
- Auto Motive Dismantling - Amd LtdMotor traders
What happens if Security Southampton 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 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
- 13357125
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 26 April 2021 (5 years ago)
- Registered office
- 4 Valentine Avenue, Sholing, Southampton, Hampshire, SO19 0ER
- Nature of business
- Other construction installation (SIC 43290)
- Year end
- 30 April (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 April 2025
- Last confirmation statement
- 25 April 2026
Filing notes for installation companies (insulation, lifts, shutters and similar)
Installation companies (insulation, lifts, shutters, solar and similar) often buy stock and equipment up front, so stock at the year end and capital allowances both affect the tax bill.
Similar companies in Southampton
Other active installation companies (insulation, lifts, shutters and similar) registered in Southampton.
- SHS Hants Ltd2013
- Solent Garage Doors Limited2024
- South Coast Ceilings and Partitions Ltd2026
- South Coast Concreting Ltd2017
- South Coast Interiors Limited2001
- Southampton Drives and Patios Ltd2020
- Stay Safe Environmental Ltd2026
- Supremacy Group Ltd2022
All installation companies (insulation, lifts, shutters and similar) in Southampton · All trades in Southampton · Installers across the UK
Frequently asked questions
When are Security Southampton Limited's accounts due?
Security Southampton Limited's next accounts are due at Companies House by 31 January 2027 (in 110 days), covering the period to 30 April 2026.
When is Security Southampton Limited'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 Security Southampton Limited still trading?
Security Southampton 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 Security Southampton Limited do?
Security Southampton Limited is registered under Other construction installation (SIC 43290).
How old is Security Southampton Limited?
Security Southampton Limited was incorporated on 26 April 2021, 5 years ago.
What is the penalty if Security Southampton 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 Security Southampton 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.