- Companies
- Machinery repair and installation
- Upminster
- Thames Slipways Ltd
Thames Slipways Ltd
- Company number
- 15830165
- Incorporated
- 10 Jul 20242 years trading
- Registered office
- 142 Avon Court, Avon Road, Upminster, RM14 1RU
- Nature of business
- Repair and maintenance of ships and boats
Thames Slipways Ltd is a 2-year-old private limited company registered in Upminster, company number 15830165, one of 13 machinery repair and installation companies in Upminster. Companies House shows its accounts as overdue: they were due on 10 April 2026.
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 Slipways Ltd is registered
The registered office is in Upminster (RM14), in the Havering local authority area, London. Show RM14 1RU on a map.
Other trade companies in RM14
- Bobofresh LtdCleaning companies
- HTS Construction LtdBuilders
- We Fix Energy LtdCivil engineering
- ZH Services LtdBuilders
- Ragasan LimitedBuilders
- Your Serve LtdCleaning companies
- LC Engineering LtdMachinery repair and installation
- Caat Interiors LtdInstallers
What happens if Thames Slipways Ltd files late
If the accounts reach Companies House today, the late filing penalty is £1,500 (£3,000 if last year's accounts were also late). It rises at each step below.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 11 Apr 2026 to 10 May 2026 | £150 |
| 1 to 3 months late | 11 May 2026 to 10 Jul 2026 | £375 |
| 3 to 6 months late | 11 Jul 2026 to 10 Oct 2026 | £750 |
| More than 6 months late | From 11 Oct 2026 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2026 | £200 |
| 3 months late | 31 Oct 2026 | another £200 |
| 6 months late | 31 Jan 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jul 2027 | 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
- 15830165
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 10 July 2024 (2 years ago)
- Registered office
- 142 Avon Court, Avon Road, Upminster, RM14 1RU
- Nature of business
- Repair and maintenance of ships and boats (SIC 33150)
- Year end
- 31 July (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 9 July 2025
Filing notes for machinery repair and installation companies
Machinery repair and installation companies often carry parts stock and specialist tools, and many work on contracts that span the year end.
Similar companies in Upminster
Other active machinery repair and installation companies registered in Upminster.
- Window and Lock Doctor Essex Limited2022
- Ah Electrical Compliance Ltd2025
- Apatite Service Solutions Ltd2022
- Cam Security Limited2011
- Fleetheat UK Ltd2011
- John Trailer Services Limited2008
- Jude Power Ltd2023
- LC Engineering Ltd2026
All machinery repair and installation companies in Upminster · All trades in Upminster · Machinery repair and installation across the UK
Frequently asked questions
When are Thames Slipways Ltd's accounts due?
Thames Slipways Ltd's accounts were due at Companies House on 10 April 2026 and the register shows them as overdue.
When is Thames Slipways Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 9 July 2025, due by 9 July 2026, and one for the period to 31 July 2025, due by 31 July 2026. Corporation tax is payable 9 months and 1 day after the end of each.
Is Thames Slipways Ltd still trading?
Thames Slipways Ltd is listed as active on the Companies House register (checked 12 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 Slipways Ltd do?
Thames Slipways Ltd is registered under Repair and maintenance of ships and boats (SIC 33150).
How old is Thames Slipways Ltd?
Thames Slipways Ltd was incorporated on 10 July 2024, 2 years ago.
What is the penalty if Thames Slipways 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 Thames Slipways Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 12 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.