- Companies
- Plumbers and heating engineers
- London
- 1ST Class Heating and Air Conditioning Limited
1ST Class Heating and Air Conditioning Limited
- Company number
- 15735424
- Incorporated
- 22 May 20242 years trading
- Registered office
- 5 Chigwell Road, London, E18 1LR
- Nature of business
- Plumbing, heat and air-conditioning installation
1ST Class Heating and Air Conditioning Limited is a 2-year-old private limited company registered in London, company number 15735424, one of 2,972 plumbing and heating companies in London. Its next accounts are due at Companies House on 28 February 2027, and the CT600 for the period to 31 May 2026 is due at HMRC on 31 May 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Who runs and owns 1ST Class Heating and Air Conditioning Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| C*** V*** | Director | May 2024 |
Person with significant control
Where 1ST Class Heating and Air Conditioning Limited is registered
The registered office is in London (E18), in the Redbridge local authority area, London. Show E18 1LR on a map.
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Shared registered office
46 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 1ST Class Heating and 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 28 February 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Mar 2027 to 31 Mar 2027 | £150 |
| 1 to 3 months late | 1 Apr 2027 to 31 May 2027 | £375 |
| 3 to 6 months late | 1 Jun 2027 to 31 Aug 2027 | £750 |
| More than 6 months late | From 1 Sep 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jun 2027 | £200 |
| 3 months late | 31 Aug 2027 | another £200 |
| 6 months late | 30 Nov 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 May 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
- 15735424
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 22 May 2024 (2 years ago)
- Registered office
- 5 Chigwell Road, London, E18 1LR
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 May (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 May 2025
- Last confirmation statement
- 21 May 2026
- Previous names
- 1ST Class Heating Ltd (until 8 Jun 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 London
Other active plumbing and heating companies registered in London.
- 1ST Plumbers Ltd2023
- 1ST Solution Gas and Plumbing Ltd2026
- 237 Gas Limited2024
- 24 Carat Interiors Ltd2026
- 24 Fix Ltd2024
- 24-7 Emergency Plumbing and Heating Ltd2026
- 24-7 Emergency Plumbing Limited2021
- 24/7 City Plumbing Limited2026
All plumbing and heating companies in London · All trades in London · Plumbers and heating engineers across the UK
Frequently asked questions
When are 1ST Class Heating and Air Conditioning Limited's accounts due?
1ST Class Heating and Air Conditioning Limited's next accounts are due at Companies House by 28 February 2027 (in 138 days), covering the period to 31 May 2026.
When is 1ST Class Heating and Air Conditioning Limited's CT600 due?
The CT600 for the period to 31 May 2026 is due at HMRC by 31 May 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 March 2027.
Is 1ST Class Heating and Air Conditioning Limited still trading?
1ST Class Heating and 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 1ST Class Heating and Air Conditioning Limited do?
1ST Class Heating and Air Conditioning Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is 1ST Class Heating and Air Conditioning Limited?
1ST Class Heating and Air Conditioning Limited was incorporated on 22 May 2024, 2 years ago.
Who runs 1ST Class Heating and Air Conditioning Limited?
1ST Class Heating and Air Conditioning Limited has 1 active director, the longest-serving appointed in May 2024. Their names and service addresses are on the Companies House register.
Who owns 1ST Class Heating and Air Conditioning Limited?
One person or company has significant control of 1ST Class Heating and Air Conditioning Limited: an individual (owns 75% or more of the shares).
What is the penalty if 1ST Class Heating and 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 1ST Class Heating and 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.