- Companies
- Plumbers and heating engineers
- Sidcup
- J & K Plumbing & Heating Ltd
J & K Plumbing & Heating Ltd
- Company number
- 05488738
- Incorporated
- 23 Jun 200521 years trading
- Registered office
- 33 Braundton Avenue, Sidcup, DA15 8EN
- Nature of business
- Plumbing, heat and air-conditioning installation
J & K Plumbing & Heating Ltd is a 21-year-old private limited company registered in Sidcup, company number 05488738, one of 101 plumbing and heating companies in Sidcup. 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.
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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 £6,942 (+66.9%) on the year before, to -£3,437.
- Net assets rose in 4 of 9 year-on-year comparisons on record.
- Current assets of £14K against £21K owed within a year: 0.6 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 10 years, 2015 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Jun 2024 | -£3,437 | £587 | £14K | £21K | 1 |
| 30 Jun 2023 | -£10K | £784 | £7,544 | £26K | 1 |
| 30 Jun 2022 | -£23K | £1,254 | £16K | £38K | 1 |
| 30 Jun 2021 | -£21K | £14K | £20K | £43K | 1 |
| 30 Jun 2020 | -£9,205 | £15K | £19K | £40K | 1 |
| 30 Jun 2019 | £48 | £2,978 | £13K | £34K | 1 |
| 30 Jun 2018 | £273 | £12K | £22K | £40K | 2 |
| 30 Jun 2017 | £5 | £1,488 | £14K | £14K | 1 |
| 30 Jun 2016 | -£13K | £814 | £11K | ||
| 30 Jun 2015 | £4,999 | £517 | £10K |
Where J & K Plumbing & Heating Ltd is registered
The registered office is in Sidcup (DA15), in the Bexley local authority area, London. Show DA15 8EN on a map.
Other trade companies in DA15
- Petrichor Gardens LtdLandscapers and gardeners
- J Kennor Plumbing LimitedPlumbers and heating engineers
- Buckson Property Maintenance LtdElectricians
- MN Cooper UK LtdMotor traders
- Husband at Home LtdInstallers
- First Choice Cars LDN LtdMotor traders
- TSLM Electrical Contractors LtdElectricians
- Airhaus LtdPlumbers and heating engineers
What happens if J & K Plumbing & Heating 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
- 05488738
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 23 June 2005 (21 years ago)
- Registered office
- 33 Braundton Avenue, Sidcup, DA15 8EN
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 June 2025
- Last confirmation statement
- 23 June 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 Sidcup
Other active plumbing and heating companies registered in Sidcup.
- J D M Plumbing Services Limited2025
- J Kennor Plumbing Limited2026
- J. R. Bilke & Sons Limited2003
- James & Sons Plumbing and Heating Limited2009
- James Wright Heating Services Ltd2022
- JJS Air Conditioning Limited2015
- JM Plumbing (London) Limited2018
- Julian Grant Limited1983
All plumbing and heating companies in Sidcup · All trades in Sidcup · Plumbers and heating engineers across the UK
Frequently asked questions
When are J & K Plumbing & Heating Ltd's accounts due?
J & K Plumbing & Heating Ltd's next accounts are due at Companies House by 31 December 2026 (in 78 days), covering the period to 31 March 2026.
When is J & K Plumbing & Heating 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 J & K Plumbing & Heating Ltd still trading?
J & K Plumbing & Heating 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 J & K Plumbing & Heating Ltd do?
J & K Plumbing & Heating Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is J & K Plumbing & Heating Ltd?
J & K Plumbing & Heating Ltd was incorporated on 23 June 2005, 21 years ago.
What is the penalty if J & K Plumbing & Heating 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 J & K Plumbing & Heating 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.