- Companies
- Machinery repair and installation
- Harrow
- Airtech (London) Limited
Airtech (London) Limited
- Company number
- 04082995
- Incorporated
- 3 Oct 200026 years trading
- Registered office
- 31 Sudbury Court Road, Harrow, Middlesex, HA1 3SD
- Nature of business
- Installation of industrial machinery and equipment
Airtech (London) Limited is a 26-year-old private limited company registered in Harrow, company number 04082995, one of 51 machinery repair and installation companies in Harrow. Its next accounts are due at Companies House on 31 October 2026, and the CT600 for the period to 31 January 2026 is due at HMRC on 31 January 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 £2,368 (+16.9%) on the year before, to £16K.
- Net assets rose in 6 of 9 year-on-year comparisons on record.
- Current assets of £101K against £85K owed within a year: 1.2 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 Jan 2025 | £16K | £10K | £101K | £85K | 2 |
| 31 Jan 2024 | £14K | £25K | £72K | £59K | 2 |
| 31 Jan 2023 | £13K | £2,028 | £52K | £40K | 1 |
| 31 Jan 2022 | £13K | £11K | £43K | £31K | 1 |
| 31 Jan 2021 | £13K | £1,782 | £32K | £21K | 1 |
| 31 Jan 2020 | £16K | £4,828 | £22K | £8,450 | 1 |
| 31 Jan 2019 | £18K | £22K | £26K | £9,858 | |
| 31 Jan 2018 | £17K | £59K | £65K | £51K | |
| 31 Jan 2017 | £3,424 | £11K | £31K | £31K | |
| 31 Jan 2016 | £710 | £30K | £52K | £55K |
Where Airtech (London) Limited is registered
The registered office is in Harrow (HA1), in the Brent local authority area, London. Show HA1 3SD on a map.
Other trade companies in HA1
- Cabos Electrical LimitedElectricians
- Mia Maria Services LtdCleaning companies
- Ac Operations LtdScaffolders
- Verde Masters LtdLandscapers and gardeners
- Omega Works Group LtdLandscapers and gardeners
- Call 'Em LimitedPlumbers and heating engineers
- Swan Roofing Services LimitedRoofers
- DRV Property Solutions LtdPainters and decorators
What happens if Airtech (London) 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 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2026 to 30 Nov 2026 | £150 |
| 1 to 3 months late | 1 Dec 2026 to 31 Jan 2027 | £375 |
| 3 to 6 months late | 1 Feb 2027 to 30 Apr 2027 | £750 |
| More than 6 months late | From 1 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2027 | £200 |
| 3 months late | 30 Apr 2027 | another £200 |
| 6 months late | 31 Jul 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 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
- 04082995
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 3 October 2000 (26 years ago)
- Registered office
- 31 Sudbury Court Road, Harrow, Middlesex, HA1 3SD
- Nature of business
- Installation of industrial machinery and equipment (SIC 33200)
- Year end
- 31 January (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 January 2025
- Last confirmation statement
- 4 December 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 Harrow
Other active machinery repair and installation companies registered in Harrow.
- Arimo Motor Ltd2009
- Arts & Crafts Maintenance Company Ltd2022
- Avitech Building Services Ltd2025
- Avkotech Limited2023
- Bes Marine Welding Ltd2024
- Catering Tech Ltd2025
- CDM Building Services Ltd2024
- CHC Maintenance Services Ltd2015
All machinery repair and installation companies in Harrow · All trades in Harrow · Machinery repair and installation across the UK
Frequently asked questions
When are Airtech (London) Limited's accounts due?
Airtech (London) Limited's next accounts are due at Companies House by 31 October 2026 (in 18 days), covering the period to 31 January 2026.
When is Airtech (London) Limited's CT600 due?
The CT600 for the period to 31 January 2026 is due at HMRC by 31 January 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 November 2026.
Is Airtech (London) Limited still trading?
Airtech (London) 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 Airtech (London) Limited do?
Airtech (London) Limited is registered under Installation of industrial machinery and equipment (SIC 33200).
How old is Airtech (London) Limited?
Airtech (London) Limited was incorporated on 3 October 2000, 26 years ago.
What is the penalty if Airtech (London) 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 Airtech (London) 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.