- Companies
- Plumbers and heating engineers
- London
- JKC Ductwork Services Ltd
JKC Ductwork Services Ltd
- Company number
- 13879084
- Incorporated
- 28 Jan 20224 years trading
- Registered office
- 53 Ceres Road, London, SE18 1HR
- Nature of business
- Plumbing, heat and air-conditioning installation; Other specialised construction activities n.e.c.
JKC Ductwork Services Ltd is a 4-year-old private limited company registered in London, company number 13879084, one of 2,972 plumbing and heating companies in London. Its next accounts are due at Companies House on 31 October 2026, and the CT600 for the period to 31 January 2026 is due at HMRC on 31 January 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 £10K (+171.4%) on the year before, to £17K.
- Current assets of £69K against £54K owed within a year: 1.3 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 3 years, 2023 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jan 2025 | £17K | £69K | £54K | 2 | |
| 31 Jan 2024 | £6,102 | £15K | £9,183 | 2 | |
| 31 Jan 2023 | £8,448 | £35K | £26K | 2 |
Where JKC Ductwork Services Ltd is registered
The registered office is in London (SE18), in the Greenwich local authority area, London. Show SE18 1HR on a map.
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- Hma Building Services LimitedFinishing trades
- JWJ Road Services LtdCleaning companies
- MK Construction Work LtdBuilders
- Armandopro LimitedBuilders
- Flynn Afghanistan Construction LtdBuilders
- Cleo Clean LtdCleaning companies
- Lutah Electrical LtdElectricians
What happens if JKC Ductwork 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 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2026 to 30 Nov 2026 | £150 |
| 1 to 3 months late | 1 Dec 2026 to 31 Jan 2027 | £375 |
| 3 to 6 months late | 1 Feb 2027 to 30 Apr 2027 | £750 |
| More than 6 months late | From 1 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2027 | £200 |
| 3 months late | 30 Apr 2027 | another £200 |
| 6 months late | 31 Jul 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 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
- 13879084
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 28 January 2022 (4 years ago)
- Registered office
- 53 Ceres Road, London, SE18 1HR
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
Other specialised construction activities n.e.c. (SIC 43999) - Year end
- 31 January (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 January 2025
- Last confirmation statement
- 13 October 2025
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 London
Other active plumbing and heating companies registered in London.
- JLF Plumbing & Heating Ltd2024
- JLS Plumbing Ltd2023
- JM Domestic Services Ltd2020
- JM Heating and Plumbing Services Ltd2025
- JMB Ventilations Limited2021
- JNW Plumbing and Heating Limited2019
- Joe the Plumber Limited2025
- John D Linton Plumbing & Heating Ltd2025
All plumbing and heating companies in London · All trades in London · Plumbers and heating engineers across the UK
Frequently asked questions
When are JKC Ductwork Services Ltd's accounts due?
JKC Ductwork Services Ltd's next accounts are due at Companies House by 31 October 2026 (in 19 days), covering the period to 31 January 2026.
When is JKC Ductwork Services Ltd's CT600 due?
The CT600 for the period to 31 January 2026 is due at HMRC by 31 January 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 November 2026.
Is JKC Ductwork Services Ltd still trading?
JKC Ductwork 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 JKC Ductwork Services Ltd do?
JKC Ductwork Services Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220); Other specialised construction activities n.e.c. (SIC 43999).
How old is JKC Ductwork Services Ltd?
JKC Ductwork Services Ltd was incorporated on 28 January 2022, 4 years ago.
What is the penalty if JKC Ductwork 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 JKC Ductwork 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.