- Companies
- Plumbers and heating engineers
- Northwood Hills
- Avidity Air Conditioning Ltd
Avidity Air Conditioning Ltd
- Company number
- 17392993
- Incorporated
- 11 Aug 2026
- Registered office
- Suite 1B1, Argyle House (Northside), Joel Street, Northwood Hills, HA6 1NW
- Nature of business
- Plumbing, heat and air-conditioning installation
Avidity Air Conditioning Ltd is a newly incorporated private limited company registered in Northwood Hills, company number 17392993, one of the UK's plumbing and heating companies. Its next accounts are due at Companies House on 11 May 2028, and its first CT600 is due at HMRC on 10 August 2028.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
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Where Avidity Air Conditioning Ltd is registered
The registered office is in Northwood Hills (HA6), in the Hillingdon local authority area, London. Show HA6 1NW on a map.
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Shared registered office
30 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 Avidity Air Conditioning Ltd 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 11 May 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 12 May 2028 to 11 Jun 2028 | £150 |
| 1 to 3 months late | 12 Jun 2028 to 11 Aug 2028 | £375 |
| 3 to 6 months late | 12 Aug 2028 to 11 Nov 2028 | £750 |
| More than 6 months late | From 12 Nov 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2028 | £200 |
| 3 months late | 30 Nov 2028 | another £200 |
| 6 months late | 28 Feb 2029 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 2029 | 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
- 17392993
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 11 August 2026
- Registered office
- Suite 1B1, Argyle House (Northside), Joel Street, Northwood Hills, HA6 1NW
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 August (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 13 August 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 Northwood Hills
Other active plumbing and heating companies registered in Northwood Hills.
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Frequently asked questions
When are Avidity Air Conditioning Ltd's accounts due?
Avidity Air Conditioning Ltd's next accounts are due at Companies House by 11 May 2028 (in 576 days), covering the period to 31 August 2027.
When is Avidity Air Conditioning Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 10 August 2027, due by 10 August 2028, and one for the period to 31 August 2027, due by 31 August 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Avidity Air Conditioning Ltd still trading?
Avidity Air Conditioning Ltd 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 Avidity Air Conditioning Ltd do?
Avidity Air Conditioning Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Avidity Air Conditioning Ltd?
Avidity Air Conditioning Ltd was incorporated on 11 August 2026, less than a year ago.
What is the penalty if Avidity Air Conditioning Ltd 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 Avidity Air Conditioning Ltd 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.