- Companies
- Plumbers and heating engineers
- Isleworth
- Advanced Air Conditioning Limited
Advanced Air Conditioning Limited
- Company number
- 06263353
- Incorporated
- 30 May 200719 years trading
- Registered office
- 37 Northumberland Avenue, Isleworth, Middlesex, TW7 5HZ
- Nature of business
- Plumbing, heat and air-conditioning installation
Advanced Air Conditioning Limited is a 19-year-old private limited company registered in Isleworth, company number 06263353, one of 29 plumbing and heating companies in Isleworth. 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 £9,220 (-91.1%) on the year before, to £906.
- Current assets of £53K against £54K owed within a year: 1.0 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 2 years, 2024 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Jun 2025 | £906 | £53K | £54K | 2 | |
| 30 Jun 2024 | £10K | £87K | £59K | 2 |
Where Advanced Air Conditioning Limited is registered
The registered office is in Isleworth (TW7), in the Hounslow local authority area, London. Show TW7 5HZ on a map.
Other trade companies in TW7
- Pracom LtdMachinery repair and installation
- V&R Construction Group LtdBuilders
- Gio Construction LimitedBuilders
- S & H Bodywork LtdMechanics and garages
- KS Garage Isleworth LtdMotor traders
- C Wiseman Services LtdCleaning companies
- Avenida Developments LtdProperty developers
- Courtesy Cars Group UK LtdMotor traders
What happens if Advanced Air Conditioning 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 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
- 06263353
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 30 May 2007 (19 years ago)
- Registered office
- 37 Northumberland Avenue, Isleworth, Middlesex, TW7 5HZ
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 30 June (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 June 2025
- Last confirmation statement
- 30 May 2026
Filing notes for plumbing and heating companies
Plumbing and heating companies frequently work under CIS for main contractors and also directly for homeowners, so turnover can mix CIS and non-CIS income.
Similar companies in Isleworth
Other active plumbing and heating companies registered in Isleworth.
- Art Plumbing Limited2022
- Atlas Gas Ltd2021
- Cadeso Ltd1997
- CRM Plumbing Services Ltd2020
- Elite Plumbing & Heating Suppliers Ltd2026
- Elite UK Heating and Plumbing Ltd2016
- Fire Skilled Ltd2018
- Fixer Fox Ltd2026
All plumbing and heating companies in Isleworth · All trades in Isleworth · Plumbers and heating engineers across the UK
Frequently asked questions
When are Advanced Air Conditioning Limited's accounts due?
Advanced Air Conditioning Limited's next accounts are due at Companies House by 31 March 2027 (in 170 days), covering the period to 30 June 2026.
When is Advanced Air Conditioning Limited'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 Advanced Air Conditioning Limited still trading?
Advanced Air Conditioning 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 Advanced Air Conditioning Limited do?
Advanced Air Conditioning Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Advanced Air Conditioning Limited?
Advanced Air Conditioning Limited was incorporated on 30 May 2007, 19 years ago.
What is the penalty if Advanced Air Conditioning 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 Advanced Air Conditioning 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.