- Companies
- Plumbers and heating engineers
- Wellingborough
- S&K Air Conditioning Limited
S&K Air Conditioning Limited
- Company number
- 15137492
- Incorporated
- 13 Sep 20233 years trading
- Registered office
- 8 East Langham Road, Raunds, Wellingborough, NN9 6LG
- Nature of business
- Plumbing, heat and air-conditioning installation
S&K Air Conditioning Limited is a 3-year-old private limited company registered in Wellingborough, company number 15137492, one of 60 plumbing and heating companies in Wellingborough. Its next accounts are due at Companies House on 30 June 2027, and the CT600 for the period to 30 September 2026 is due at HMRC on 30 September 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 £5,632 (+52.8%) on the year before, to £16K.
- Current assets of £80K against £28K owed within a year: 2.9 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 Sep 2025 | £16K | £80K | £28K | 2 | |
| 30 Sep 2024 | £11K | £53K | £5,882 | 2 |
Where S&K Air Conditioning Limited is registered
The registered office is in Wellingborough (NN9), in the North Northamptonshire local authority area, East Midlands. Show NN9 6LG on a map.
Other trade companies in NN9
- Tevera LtdMechanics and garages
- GWD Construction Group LtdBuilders
- Akusa LtdCleaning companies
- DCX Power Solutions LimitedElectricians
- Silva Swann Sealants LimitedRoofers
- Elitte Detailing LtdMotor traders
- CC Carpentry & Maintenance LimitedProperty developers
- Vielec International Investments LtdMachinery repair and installation
What happens if S&K 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 30 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jul 2027 to 31 Jul 2027 | £150 |
| 1 to 3 months late | 1 Aug 2027 to 30 Sep 2027 | £375 |
| 3 to 6 months late | 1 Oct 2027 to 31 Dec 2027 | £750 |
| More than 6 months late | From 1 Jan 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2027 | £200 |
| 3 months late | 30 Dec 2027 | another £200 |
| 6 months late | 30 Mar 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 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
- 15137492
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 13 September 2023 (3 years ago)
- Registered office
- 8 East Langham Road, Raunds, Wellingborough, NN9 6LG
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 30 September (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 September 2025
- Last confirmation statement
- 12 September 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 Wellingborough
Other active plumbing and heating companies registered in Wellingborough.
- Solairis Limited2026
- Steve Grant Plumbing & Heating Limited2006
- T.Mitchell Plumbing & Bathrooms Ltd2026
- Tek Mechanical Services Ltd2019
- Tno Limited2016
- W.S. Howe and Co. (Wellingborough) Limited1976
- Wellingborough Plumbing and Heating Services Limited2014
- Yuca Energy Limited2019
All plumbing and heating companies in Wellingborough · All trades in Wellingborough · Plumbers and heating engineers across the UK
Frequently asked questions
When are S&K Air Conditioning Limited's accounts due?
S&K Air Conditioning Limited's next accounts are due at Companies House by 30 June 2027 (in 260 days), covering the period to 30 September 2026.
When is S&K Air Conditioning Limited's CT600 due?
The CT600 for the period to 30 September 2026 is due at HMRC by 30 September 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 July 2027.
Is S&K Air Conditioning Limited still trading?
S&K 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 S&K Air Conditioning Limited do?
S&K Air Conditioning Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is S&K Air Conditioning Limited?
S&K Air Conditioning Limited was incorporated on 13 September 2023, 3 years ago.
What is the penalty if S&K 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 S&K 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.