- Companies
- Plumbers and heating engineers
- Benfleet
- Thames Side Mechanical Limited
Thames Side Mechanical Limited
- Company number
- 17114640
- Incorporated
- 25 Mar 2026
- Registered office
- 70A Church Road, Benfleet, SS7 4EU
- Nature of business
- Plumbing, heat and air-conditioning installation
Thames Side Mechanical Limited is a newly incorporated private limited company registered in Benfleet, company number 17114640, one of 72 plumbing and heating companies in Benfleet. Its next accounts are due at Companies House on 25 December 2027, and its first CT600 is due at HMRC on 24 March 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 Thames Side Mechanical Limited is registered
The registered office is in Benfleet (SS7), in the Castle Point local authority area, East of England. Show SS7 4EU on a map.
Other trade companies in SS7
- Byways Property Maintenance LtdFinishing trades
- Flowtech Drainage and Groundwork Solutions LimitedCivil engineering
- NMP Property Investors LtdProperty developers
- Apex Engineering PSV Specialist LimitedMechanics and garages
- Maher Heights Scaffolding LtdScaffolders
- Prime & Plaster LtdPlasterers
- Estuary Electrical Solutions LtdElectricians
- DS Garden Maintenance LtdLandscapers and gardeners
What happens if Thames Side 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 25 December 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 26 Dec 2027 to 25 Jan 2028 | £150 |
| 1 to 3 months late | 26 Jan 2028 to 25 Mar 2028 | £375 |
| 3 to 6 months late | 26 Mar 2028 to 25 Jun 2028 | £750 |
| More than 6 months late | From 26 Jun 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2028 | £200 |
| 3 months late | 30 Jun 2028 | another £200 |
| 6 months late | 30 Sep 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 17114640
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 25 March 2026
- Registered office
- 70A Church Road, Benfleet, SS7 4EU
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 March (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 Benfleet
Other active plumbing and heating companies registered in Benfleet.
- Warmth Plumbing and Heating Limited2014
- We Fix Plumbing,Heating & Gas Limited2025
- Webb Heating & Plumbing Limited2002
- Yalehome Limited2004
- 1ST Boilers Limited2015
- Abigas Engineering Services Limited2015
- Advanced Mechanical Solutions Limited2015
- Aldens Plumbing & Heating Ltd2024
All plumbing and heating companies in Benfleet · All trades in Benfleet · Plumbers and heating engineers across the UK
Frequently asked questions
When are Thames Side Mechanical Limited's accounts due?
Thames Side Mechanical Limited's next accounts are due at Companies House by 25 December 2027 (in 438 days), covering the period to 31 March 2027.
When is Thames Side 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 24 March 2027, due by 24 March 2028, and one for the period to 31 March 2027, due by 31 March 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Thames Side Mechanical Limited still trading?
Thames Side 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 Thames Side Mechanical Limited do?
Thames Side Mechanical Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Thames Side Mechanical Limited?
Thames Side Mechanical Limited was incorporated on 25 March 2026, less than a year ago.
What is the penalty if Thames Side 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 Thames Side 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.