- Companies
- Property developers
- Southampton
- Air Conditioning Services (South) Limited
Air Conditioning Services (South) Limited
- Company number
- 07450908
- Incorporated
- 25 Nov 201015 years trading
- Registered office
- Stag Gates House, 63/64 the Avenue, Southampton, SO17 1XS
- Nature of business
- Development of building projects; Plumbing, heat and air-conditioning installation
Air Conditioning Services (South) Limited is a 15-year-old private limited company registered in Southampton, company number 07450908, one of 399 property development companies in Southampton. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 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 £5,789 (+295.7%) on the year before, to £3,831.
- Net assets rose in 3 of 9 year-on-year comparisons on record.
- Current assets of £18K against £19K owed within a year: 0.9 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- 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 Mar 2025 | £3,831 | £18K | £19K | 0 | |
| 31 Mar 2024 | -£1,958 | £18K | £22K | 2 | |
| 31 Mar 2023 | -£5,306 | £22K | £30K | 2 | |
| 31 Mar 2022 | -£3,910 | £30K | £35K | 2 | |
| 31 Mar 2021 | -£2,598 | £27K | £31K | 2 | |
| 31 Mar 2020 | £1,532 | £30K | £36K | 2 | |
| 31 Mar 2019 | £18K | £49K | £46K | 2 | |
| 31 Mar 2018 | £271 | £14K | £37K | 2 | |
| 31 Mar 2017 | £297 | £23K | £56K | ||
| 31 Mar 2016 | £8,088 | £28K | £64K |
Who runs and owns Air Conditioning Services (South) Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (2)
| Name | Role | Appointed |
|---|---|---|
| G*** D*** | Director | Nov 2010 |
| J*** D*** | Director | Apr 2011 |
1 former officer
| Name | Role | Appointed | Left |
|---|---|---|---|
| G*** S*** | Director | Nov 2010 | Nov 2010 |
People with significant control (2)
Where Air Conditioning Services (South) Limited is registered
The registered office is in Southampton (SO17), in the Southampton local authority area, South East. Show SO17 1XS on a map.
Other trade companies in SO17
- Vip Crystal LtdFacilities management
- KTNR LimitedBuilders
- SVS Civil Engineering LtdBuilders
- Solent Auto Group LimitedMotor traders
- Portswood Car Wash LtdCleaning companies
- Ranjit Singh Constructions LimitedBuilders
- Khangura Global LimitedBuilders
- Frontline Builder LtdBuilders
Shared registered office
33 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if Air Conditioning Services (South) 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 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 07450908
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 25 November 2010 (15 years ago)
- Registered office
- Stag Gates House, 63/64 the Avenue, Southampton, SO17 1XS
- Nature of business
- Development of building projects (SIC 41100)
Plumbing, heat and air-conditioning installation (SIC 43220) - Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 25 November 2025
Filing notes for property development companies
Many property development companies are single-project vehicles. Stock of land and buildings sits on the balance sheet as work in progress until sale, and a company that has finished its project may become dormant rather than close.
Similar companies in Southampton
Other active property development companies registered in Southampton.
- Ajv Designs Ltd2014
- Ajw Building Ltd2020
- Ajw Property Management Limited2017
- Amara Sullaman Estates Ltd2026
- Amici Developments Limited2016
- Anamera Group Limited2017
- Anandpur Limited2015
- Angus Plastering and Dry Lining Limited2023
All property development companies in Southampton · All trades in Southampton · Property developers across the UK
Frequently asked questions
When are Air Conditioning Services (South) Limited's accounts due?
Air Conditioning Services (South) Limited's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is Air Conditioning Services (South) Limited's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is Air Conditioning Services (South) Limited still trading?
Air Conditioning Services (South) 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 Air Conditioning Services (South) Limited do?
Air Conditioning Services (South) Limited is registered under Development of building projects (SIC 41100); Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Air Conditioning Services (South) Limited?
Air Conditioning Services (South) Limited was incorporated on 25 November 2010, 15 years ago.
Who runs Air Conditioning Services (South) Limited?
Air Conditioning Services (South) Limited has 2 active directors, the longest-serving appointed in Nov 2010. Their names and service addresses are on the Companies House register.
Who owns Air Conditioning Services (South) Limited?
2 people or companies have significant control of Air Conditioning Services (South) Limited: an individual (owns 50% to 75% of the shares); an individual (owns 25% to 50% of the shares).
What is the penalty if Air Conditioning Services (South) 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 Air Conditioning Services (South) 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.