- Companies
- Plumbers and heating engineers
- Harrow
- Solidfix Ltd
Solidfix Ltd
- Company number
- 15929722
- Incorporated
- 2 Sep 20242 years trading
- Registered office
- 183 Roxeth Green Avenue, Harrow, HA2 0QQ
- Nature of business
- Plumbing, heat and air-conditioning installation
Solidfix Ltd is a 2-year-old private limited company registered in Harrow, company number 15929722, one of 154 plumbing and heating companies in Harrow. 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.
Who runs and owns Solidfix Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| S*** S*** | Director | Sep 2024 |
Person with significant control
Where Solidfix Ltd is registered
The registered office is in Harrow (HA2), in the Harrow local authority area, London. Show HA2 0QQ on a map.
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- Grandwellautos LtdMotor traders
- Multisteel Powdercoating LtdPainters and decorators
- Neon Systems LtdElectricians
- Firstclass Facilities LtdCleaning companies
- PMD Construct LtdBuilders
What happens if Solidfix 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
- 15929722
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 2 September 2024 (2 years ago)
- Registered office
- 183 Roxeth Green Avenue, Harrow, HA2 0QQ
- 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
- 1 September 2025
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 Harrow
Other active plumbing and heating companies registered in Harrow.
- T&D Plumbing & Heating Services Ltd2025
- Tailor Made Plumbing Limited2025
- The Chalfonts Plumbing & Heating Company Limited2024
- Thermal Glow Limited2020
- True North Mechanical Ltd.2016
- TVP Fire Ltd2022
- UK Drainage Solutions Limited2020
- UK Gas & Plumbing Limited2011
All plumbing and heating companies in Harrow · All trades in Harrow · Plumbers and heating engineers across the UK
Frequently asked questions
When are Solidfix Ltd's accounts due?
Solidfix 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 Solidfix 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 Solidfix Ltd still trading?
Solidfix 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 Solidfix Ltd do?
Solidfix Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Solidfix Ltd?
Solidfix Ltd was incorporated on 2 September 2024, 2 years ago.
Who runs Solidfix Ltd?
Solidfix Ltd has 1 active director, the longest-serving appointed in Sep 2024. Their names and service addresses are on the Companies House register.
Who owns Solidfix Ltd?
One person or company has significant control of Solidfix Ltd: an individual (owns 75% or more of the shares).
What is the penalty if Solidfix 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 Solidfix 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.