- Companies
- Plumbers and heating engineers
- Westerham
- Coolburn Air Conditioning Limited
Coolburn Air Conditioning Limited
- Company number
- 02030131
- Incorporated
- 20 Jun 198640 years trading
- Registered office
- Betsoms, The Avenue, Westerham, Kent, TN16 2EE
- Nature of business
- Plumbing, heat and air-conditioning installation
Coolburn Air Conditioning Limited is a 40-year-old private limited company registered in Westerham, company number 02030131, one of 41 plumbing and heating companies in Westerham. Its next accounts are due at Companies House on 30 April 2027, and the CT600 for the period to 31 July 2026 is due at HMRC on 31 July 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 £212 (+7.5%) on the year before, to £3,037.
- Net assets rose in 8 of 9 year-on-year comparisons on record.
- Current assets of £236K against £146K owed within a year: 1.6 times cover.
- 4 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 Jul 2025 | £3,037 | £100 | £236K | £146K | 4 |
| 31 Jul 2024 | £2,825 | £17 | £233K | £148K | 4 |
| 31 Jul 2023 | £242 | £100 | £206K | £109K | 4 |
| 31 Jul 2022 | £24K | £518 | £176K | £90K | 5 |
| 31 Jan 2021 | £22K | £1,920 | £145K | £134K | 5 |
| 31 Jan 2020 | £19K | £234 | £192K | £145K | 5 |
| 31 Jan 2019 | £15K | £2,475 | £142K | £105K | 5 |
| 31 Jan 2018 | £13K | £243 | £133K | £105K | 5 |
| 31 Jan 2017 | £12K | £152 | £131K | £115K | 5 |
| 31 Jan 2016 | £4,136 | £158K | £139K |
Public contracts won
Coolburn Air Conditioning Limited has one public sector contract award on record (2016). Source: Contracts Finder and Find a Tender award notices. These were matched by the company's exact name because the notice gave no company number.
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| Tonbridge & Malling Borough Council | Ventilation System | 23 Nov 2016 |
Where Coolburn Air Conditioning Limited is registered
The registered office is in Westerham (TN16), in the Sevenoaks local authority area, South East. Show TN16 2EE on a map.
Other trade companies in TN16
- Fuller & Sons Carpentry LtdProperty developers
- Protech Air Solutions LtdPlumbers and heating engineers
- DW Construction (South) LimitedCivil engineering
- Danvic Facilities & Refurbishment LimitedSpecialist contractors
- The Plumbing Brothers LtdFinishing trades
- Beckenham Driveways and Patios LtdInstallers
- Christmas Tree Farm Outdoors Services LtdLandscapers and gardeners
- Jak Rolling LimitedPainters and decorators
What happens if Coolburn 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 April 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 May 2027 to 31 May 2027 | £150 |
| 1 to 3 months late | 1 Jun 2027 to 31 Jul 2027 | £375 |
| 3 to 6 months late | 1 Aug 2027 to 31 Oct 2027 | £750 |
| More than 6 months late | From 1 Nov 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2027 | £200 |
| 3 months late | 31 Oct 2027 | another £200 |
| 6 months late | 31 Jan 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jul 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
- 02030131
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 20 June 1986 (40 years ago)
- Registered office
- Betsoms, The Avenue, Westerham, Kent, TN16 2EE
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 July (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 July 2025
- Last confirmation statement
- 28 January 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 Westerham
Other active plumbing and heating companies registered in Westerham.
- Cooling and Heating Technology Ltd2015
- Ecoclimate Global Solutions Ltd2025
- Emerge Mechanical Services Ltd2023
- F&O Installations Ltd2023
- Fluester Plumbing and Heating Ltd2023
- Gas Mark 10 Ltd2026
- Gentry Heating Limited2011
- HJL Building Services Ltd2019
All plumbing and heating companies in Westerham · All trades in Westerham · Plumbers and heating engineers across the UK
Frequently asked questions
When are Coolburn Air Conditioning Limited's accounts due?
Coolburn Air Conditioning Limited's next accounts are due at Companies House by 30 April 2027 (in 199 days), covering the period to 31 July 2026.
When is Coolburn Air Conditioning Limited's CT600 due?
The CT600 for the period to 31 July 2026 is due at HMRC by 31 July 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 May 2027.
Is Coolburn Air Conditioning Limited still trading?
Coolburn 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 Coolburn Air Conditioning Limited do?
Coolburn Air Conditioning Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Coolburn Air Conditioning Limited?
Coolburn Air Conditioning Limited was incorporated on 20 June 1986, 40 years ago.
Has Coolburn Air Conditioning Limited won public sector contracts?
Yes. Coolburn Air Conditioning Limited has one contract award from public bodies on Contracts Finder and Find a Tender, most recently from Tonbridge & Malling Borough Council.
What is the penalty if Coolburn 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 Coolburn 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.