- Companies
- Plumbers and heating engineers
- London
- Thy Plumber Ltd
Thy Plumber Ltd
- Company number
- 15938154
- Incorporated
- 5 Sep 20242 years trading
- Registered office
- Flat 2, 8 Arnham Place, London, NW7 1RR
- Nature of business
- Plumbing, heat and air-conditioning installation
Thy Plumber Ltd is a 2-year-old private limited company registered in London, company number 15938154, one of 2,972 plumbing and heating companies in London. Its next accounts are due at Companies House on 30 June 2027, and the CT600 for the period to 30 September 2026 is due at HMRC on 30 September 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2025
From the balance sheet at 30 September 2025, as filed at Companies House.
Where Thy Plumber Ltd is registered
The registered office is in London (NW7), in the Barnet local authority area, London. Show NW7 1RR on a map.
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What happens if Thy Plumber 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 30 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jul 2027 to 31 Jul 2027 | £150 |
| 1 to 3 months late | 1 Aug 2027 to 30 Sep 2027 | £375 |
| 3 to 6 months late | 1 Oct 2027 to 31 Dec 2027 | £750 |
| More than 6 months late | From 1 Jan 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2027 | £200 |
| 3 months late | 30 Dec 2027 | another £200 |
| 6 months late | 30 Mar 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 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
- 15938154
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 5 September 2024 (2 years ago)
- Registered office
- Flat 2, 8 Arnham Place, London, NW7 1RR
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 30 September (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 September 2025
- Last confirmation statement
- 21 August 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 London
Other active plumbing and heating companies registered in London.
- Ticu Petrea Limited2026
- Tier 1 Heating Limited2015
- Tillett Plumbing & Heating Ltd2015
- Timms Property Maintenance & Management Ltd2021
- Tinersit Group Limited2026
- TJ Heating Plumbing Services Ltd2026
- TJ Vertex Ltd2026
- TJM Gas and Heating Services Ltd2023
All plumbing and heating companies in London · All trades in London · Plumbers and heating engineers across the UK
Frequently asked questions
When are Thy Plumber Ltd's accounts due?
Thy Plumber Ltd's next accounts are due at Companies House by 30 June 2027 (in 261 days), covering the period to 30 September 2026.
When is Thy Plumber Ltd's CT600 due?
The CT600 for the period to 30 September 2026 is due at HMRC by 30 September 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 July 2027.
Is Thy Plumber Ltd still trading?
Thy Plumber 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 Thy Plumber Ltd do?
Thy Plumber Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Thy Plumber Ltd?
Thy Plumber Ltd was incorporated on 5 September 2024, 2 years ago.
What is the penalty if Thy Plumber 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 Thy Plumber 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.