- Companies
- Plumbers and heating engineers
- Worthing
- Clarke Mechanical Limited
Clarke Mechanical Limited
- Company number
- 17151873
- Incorporated
- 11 Apr 2026
- Registered office
- Wiston House, 1 Wiston Avenue, Worthing, West Sussex, BN14 7QL
- Nature of business
- Plumbing, heat and air-conditioning installation
Clarke Mechanical Limited is a newly incorporated private limited company registered in Worthing, company number 17151873, one of 94 plumbing and heating companies in Worthing. Its next accounts are due at Companies House on 11 January 2028, and its first CT600 is due at HMRC on 10 April 2028.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
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Where Clarke Mechanical Limited is registered
The registered office is in Worthing (BN14), in the Worthing local authority area, South East. Show BN14 7QL on a map.
Other trade companies in BN14
- Vision Saunas LtdBuilders
- Southern Roof Repairs LtdRoofers
- Onspot Plumbing & Heating LtdPlumbers and heating engineers
- The Chisnall Group LtdBuilders
- GB Steeplejacks LtdSpecialist contractors
- Ty Cleaning Solutions LtdCleaning companies
- Boldbakers LimitedCleaning companies
- Our Property UK Solutions LtdProperty developers
Shared registered office
56 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if Clarke Mechanical 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 11 January 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 12 Jan 2028 to 11 Feb 2028 | £150 |
| 1 to 3 months late | 12 Feb 2028 to 11 Apr 2028 | £375 |
| 3 to 6 months late | 12 Apr 2028 to 11 Jul 2028 | £750 |
| More than 6 months late | From 12 Jul 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 May 2028 | £200 |
| 3 months late | 30 Jul 2028 | another £200 |
| 6 months late | 30 Oct 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Apr 2029 | 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
- 17151873
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 11 April 2026
- Registered office
- Wiston House, 1 Wiston Avenue, Worthing, West Sussex, BN14 7QL
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 30 April (accounting reference date)
- Accounts type
- No accounts filed yet
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 Worthing
Other active plumbing and heating companies registered in Worthing.
- CNM Plumbing Solutions Limited2024
- Coastal Gastech Limited2019
- Copper Works Plumbing and Heating Limited2023
- Creative Heating Ltd2006
- D C Heating Solutions Ltd2017
- David N Prosser Plumbing & Heating Ltd2009
- Dawson Heating Ltd2009
- DMC Heating and Plumbing Solutions Ltd2022
All plumbing and heating companies in Worthing · All trades in Worthing · Plumbers and heating engineers across the UK
Frequently asked questions
When are Clarke Mechanical Limited's accounts due?
Clarke Mechanical Limited's next accounts are due at Companies House by 11 January 2028 (in 455 days), covering the period to 30 April 2027.
When is Clarke Mechanical Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 10 April 2027, due by 10 April 2028, and one for the period to 30 April 2027, due by 30 April 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Clarke Mechanical Limited still trading?
Clarke Mechanical 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 Clarke Mechanical Limited do?
Clarke Mechanical Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Clarke Mechanical Limited?
Clarke Mechanical Limited was incorporated on 11 April 2026, less than a year ago.
What is the penalty if Clarke Mechanical 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 Clarke Mechanical 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.