- Companies
- Plumbers and heating engineers
- Derby
- Kool-Fix Limited
Kool-Fix Limited
- Company number
- 08168360
- Incorporated
- 6 Aug 201214 years trading
- Registered office
- 18 Kingsmuir Road, Mickleover, Derby, DE3 0PY
- Nature of business
- Plumbing, heat and air-conditioning installation
Kool-Fix Limited is a 14-year-old private limited company registered in Derby, company number 08168360, one of 176 plumbing and heating companies in Derby. Its next accounts are due at Companies House on 31 May 2027, and the CT600 for the period to 31 August 2026 is due at HMRC on 31 August 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 £22K (+15%) on the year before, to £167K.
- Net assets rose in 9 of 9 year-on-year comparisons on record.
- Current assets of £190K against £31K owed within a year: 6.0 times cover.
- 2 employees on average, up from -2 the year before.
- 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 Aug 2025 | £167K | £160K | £190K | £31K | 2 |
| 31 Aug 2024 | £145K | £131K | £157K | £23K | -2 |
| 31 Aug 2023 | £115K | £100K | £128K | £28K | -2 |
| 31 Aug 2022 | £93K | £59K | £92K | £16K | 2 |
| 31 Aug 2021 | £88K | £74K | £111K | £29K | 2 |
| 31 Aug 2020 | £74K | £86K | £116K | £24K | 2 |
| 31 Aug 2019 | £60K | £53K | £65K | £13K | 2 |
| 31 Aug 2018 | £44K | £36K | £46K | £11K | 2 |
| 31 Aug 2017 | £26K | £27K | £35K | £12K | 1 |
| 31 Aug 2016 | £15K | £29K | £37K | £27K |
Where Kool-Fix Limited is registered
The registered office is in Derby (DE3), in the Derby local authority area, East Midlands. Show DE3 0PY on a map.
Other trade companies in DE3
- Welora Homes LtdProperty developers
- MB Electrical Projects LtdElectricians
- H. Bourne Group LtdPlumbers and heating engineers
- Sufloria Cleaners LimitedCleaning companies
- Kark UK 2027 LtdMotor traders
- Edward Orme Engineering Solutions LtdCivil engineering
- Bail3Y Rail LimitedMachinery repair and installation
- Blyth Car Sales LtdMotor traders
What happens if Kool-Fix 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 May 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jun 2027 to 30 Jun 2027 | £150 |
| 1 to 3 months late | 1 Jul 2027 to 31 Aug 2027 | £375 |
| 3 to 6 months late | 1 Sep 2027 to 30 Nov 2027 | £750 |
| More than 6 months late | From 1 Dec 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2027 | £200 |
| 3 months late | 30 Nov 2027 | another £200 |
| 6 months late | 29 Feb 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 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
- 08168360
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 6 August 2012 (14 years ago)
- Registered office
- 18 Kingsmuir Road, Mickleover, Derby, DE3 0PY
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 August (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 August 2025
- Last confirmation statement
- 6 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 Derby
Other active plumbing and heating companies registered in Derby.
- KSG Heating & Plumbing Ltd2022
- Kular Gas & Heating Limited2017
- Leakys Event Water Solutions Ltd2023
- Lennies Plumbing & Heating Services Limited2026
- Low Climate Control Ltd2020
- LSW Mechanical Services Limited2016
- Lulu Mechanical Limited2018
- M H Plumbing Derby Ltd2026
All plumbing and heating companies in Derby · All trades in Derby · Plumbers and heating engineers across the UK
Frequently asked questions
When are Kool-Fix Limited's accounts due?
Kool-Fix Limited's next accounts are due at Companies House by 31 May 2027 (in 231 days), covering the period to 31 August 2026.
When is Kool-Fix Limited's CT600 due?
The CT600 for the period to 31 August 2026 is due at HMRC by 31 August 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 June 2027.
Is Kool-Fix Limited still trading?
Kool-Fix 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 Kool-Fix Limited do?
Kool-Fix Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Kool-Fix Limited?
Kool-Fix Limited was incorporated on 6 August 2012, 14 years ago.
What is the penalty if Kool-Fix 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 Kool-Fix 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.