- Companies
- Plumbers and heating engineers
- Rochester
- J Clarkson Ltd
J Clarkson Ltd
- Company number
- 10097454
- Incorporated
- 1 Apr 201610 years trading
- Registered office
- 14 Rochester Road, Halling, Rochester, Kent, ME2 1AH
- Nature of business
- Plumbing, heat and air-conditioning installation
J Clarkson Ltd is a 10-year-old private limited company registered in Rochester, company number 10097454, one of 95 plumbing and heating companies in Rochester. Its next accounts are due at Companies House on 31 January 2027, and the CT600 for the period to 30 April 2026 is due at HMRC on 30 April 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 down £18K (-41%) on the year before, to £25K.
- Net assets rose in 5 of 8 year-on-year comparisons on record.
- Current assets of £39K against £20K owed within a year: 2.0 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 9 years, 2017 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Apr 2025 | £25K | £25K | £39K | £20K | 1 |
| 30 Apr 2024 | £43K | £17K | £45K | £7,838 | 1 |
| 30 Apr 2023 | £71K | £110K | £113K | £32K | 1 |
| 30 Apr 2022 | £68K | £74K | £88K | £11K | 1 |
| 30 Apr 2021 | £35K | £82K | £61K | 2 | |
| 30 Apr 2020 | £23K | £15K | £9,865 | 3 | |
| 30 Apr 2019 | £28K | £32K | £27K | ||
| 30 Apr 2018 | £21K | £15K | £24K | ||
| 30 Apr 2017 | £14K | £17K |
Who runs and owns J Clarkson Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| J*** C*** | Director | Apr 2016 |
Person with significant control
Where J Clarkson Ltd is registered
The registered office is in Rochester (ME2), in the Medway local authority area, South East. Show ME2 1AH on a map.
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Also registered at this address
1 other company uses the same registered office as J Clarkson Ltd.
- J R C Plumbing Services LtdPlumbers and heating engineers
What happens if J Clarkson 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 January 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Feb 2027 to 28 Feb 2027 | £150 |
| 1 to 3 months late | 1 Mar 2027 to 30 Apr 2027 | £375 |
| 3 to 6 months late | 1 May 2027 to 31 Jul 2027 | £750 |
| More than 6 months late | From 1 Aug 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 May 2027 | £200 |
| 3 months late | 30 Jul 2027 | another £200 |
| 6 months late | 30 Oct 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Apr 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
- 10097454
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 1 April 2016 (10 years ago)
- Registered office
- 14 Rochester Road, Halling, Rochester, Kent, ME2 1AH
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 30 April (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 April 2025
- Last confirmation statement
- 6 March 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 Rochester
Other active plumbing and heating companies registered in Rochester.
- J J Smith Plumbing & Heating Limited2007
- J R C Plumbing Services Ltd2019
- J-Mech Plumbing and Heating Services Ltd2005
- Jack Frost Ac Limited2019
- Jarrett Plumbing Services Ltd2022
- JJS Gas and Heating Limited2020
- JK Cooling Solutions Ltd2025
- JLG Heating & Plumbing Ltd2021
All plumbing and heating companies in Rochester · All trades in Rochester · Plumbers and heating engineers across the UK
Frequently asked questions
When are J Clarkson Ltd's accounts due?
J Clarkson Ltd's next accounts are due at Companies House by 31 January 2027 (in 111 days), covering the period to 30 April 2026.
When is J Clarkson Ltd's CT600 due?
The CT600 for the period to 30 April 2026 is due at HMRC by 30 April 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 February 2027.
Is J Clarkson Ltd still trading?
J Clarkson 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 Clarkson Ltd do?
J Clarkson Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is J Clarkson Ltd?
J Clarkson Ltd was incorporated on 1 April 2016, 10 years ago.
Who runs J Clarkson Ltd?
J Clarkson Ltd has 1 active director, the longest-serving appointed in Apr 2016. Their names and service addresses are on the Companies House register.
Who owns J Clarkson Ltd?
One person or company has significant control of J Clarkson Ltd: an individual (owns 75% or more of the shares).
What is the penalty if J Clarkson 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 Clarkson 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.