- Companies
- Plumbers and heating engineers
- Slough
- K J Cool Services Ltd
K J Cool Services Ltd
- Company number
- 13269040
- Incorporated
- 16 Mar 20215 years trading
- Registered office
- 27 Lincoln Way, Slough, Berkshire, SL1 5RF
- Nature of business
- Plumbing, heat and air-conditioning installation; Repair of household appliances and home and garden equipment
K J Cool Services Ltd is a 5-year-old private limited company registered in Slough, company number 13269040, one of 128 plumbing and heating companies in Slough. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
Is this your company?
File the accounts to Companies House and the CT600 to HMRC yourself with A.X.E.L Filing. One set of questions, both filings, £49 flat. No accountant, no subscription.
File for K J Cool Services LtdOr get a reminder before each deadline
Free. We email you 60, 30, 14, 7 and 1 days before the accounts, CT600 and confirmation statement are due. Unsubscribe in one click.
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 £141 (+11.4%) on the year before, to £1,383.
- Net assets rose in 2 of 3 year-on-year comparisons on record.
- Current assets of £239K against £57K owed within a year: 4.2 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 4 years, 2022 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £1,383 | £95K | £239K | £57K | 2 |
| 31 Mar 2024 | £1,242 | £199K | £9,592 | 2 | |
| 31 Mar 2023 | £4,023 | £101K | £115K | 2 | |
| 31 Mar 2022 | £146 | £35K | £58K | 2 |
Where K J Cool Services Ltd is registered
The registered office is in Slough (SL1), in the Slough local authority area, South East. Show SL1 5RF on a map.
Other trade companies in SL1
- Yanky Construction LtdBuilders
- Westside Automotive LtdMotor traders
- Shadeworks LtdInstallers
- Yad Building Services LimitedBuilders
- Slough Vehicle Repair Centre LtdMechanics and garages
- Hadi Automotive LtdMotor traders
- Imperial Berkshire Motors LtdMotor traders
- MDN General LtdBuilders
What happens if K J Cool Services 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 31 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 13269040
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 16 March 2021 (5 years ago)
- Registered office
- 27 Lincoln Way, Slough, Berkshire, SL1 5RF
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
Repair of household appliances and home and garden equipment (SIC 95220) - Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 18 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 Slough
Other active plumbing and heating companies registered in Slough.
- Kahma Home Improvements Limited2025
- Kals Heating and Plumbing Services Ltd2025
- KCG Heating Specialists Limited2022
- KH Mechanical Services Limited2013
- London Gas Engineers Ltd2012
- London Heating and Gas Services Limited2024
- M&M Building Services Ltd2022
- Mac Plumbing and Heating Ltd2021
All plumbing and heating companies in Slough · All trades in Slough · Plumbers and heating engineers across the UK
Frequently asked questions
When are K J Cool Services Ltd's accounts due?
K J Cool Services Ltd's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is K J Cool Services Ltd's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is K J Cool Services Ltd still trading?
K J Cool Services 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 K J Cool Services Ltd do?
K J Cool Services Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220); Repair of household appliances and home and garden equipment (SIC 95220).
How old is K J Cool Services Ltd?
K J Cool Services Ltd was incorporated on 16 March 2021, 5 years ago.
What is the penalty if K J Cool Services 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 K J Cool Services 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.