- Companies
- Installers
- Redruth
- Southwest Insulating Limited
Southwest Insulating Limited
- Company number
- 15856518
- Incorporated
- 24 Jul 20242 years trading
- Registered office
- 3 Treruffe Terrace, Redruth, TR15 2PY
- Nature of business
- Other construction installation
Southwest Insulating Limited is a 2-year-old private limited company registered in Redruth, company number 15856518, one of 7 installation companies (insulation, lifts, shutters and similar) in Redruth. Its next accounts are due at Companies House on 30 April 2027, and the CT600 for the period to 31 July 2026 is due at HMRC on 31 July 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 31 July 2025, as filed at Companies House.
Who runs and owns Southwest Insulating Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| A*** H*** | Director | Jul 2024 |
3 former officers
| Name | Role | Appointed | Left |
|---|---|---|---|
| A*** H*** | Director | Jul 2024 | Nov 2024 |
| P*** P*** | Director | Jan 2026 | Jul 2026 |
| L*** R*** | Director | Nov 2024 | Aug 2025 |
Person with significant control
Where Southwest Insulating Limited is registered
The registered office is in Redruth (TR15), in the Cornwall local authority area, South West. Show TR15 2PY on a map.
Other trade companies in TR15
- Tech Device Clinic LtdRepair services
- James Developments (SW) LtdProperty developers
- Drakes Small Repairs LtdRepair services
- Millennium Mechanics LtdMechanics and garages
- Barrett Builds LtdBuilders
- Aen Developments LimitedBuilders
- DN Manship Construction LimitedSpecialist contractors
- Home Ease Bathrooms LtdInstallers
What happens if Southwest Insulating 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 30 April 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 May 2027 to 31 May 2027 | £150 |
| 1 to 3 months late | 1 Jun 2027 to 31 Jul 2027 | £375 |
| 3 to 6 months late | 1 Aug 2027 to 31 Oct 2027 | £750 |
| More than 6 months late | From 1 Nov 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2027 | £200 |
| 3 months late | 31 Oct 2027 | another £200 |
| 6 months late | 31 Jan 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jul 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
- 15856518
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 24 July 2024 (2 years ago)
- Registered office
- 3 Treruffe Terrace, Redruth, TR15 2PY
- Nature of business
- Other construction installation (SIC 43290)
- Year end
- 31 July (accounting reference date)
- Accounts type
- Unaudited abridged
- Last accounts made up to
- 31 July 2025
- Last confirmation statement
- 23 July 2026
Filing notes for installation companies (insulation, lifts, shutters and similar)
Installation companies (insulation, lifts, shutters, solar and similar) often buy stock and equipment up front, so stock at the year end and capital allowances both affect the tax bill.
Similar companies in Redruth
Other active installation companies (insulation, lifts, shutters and similar) registered in Redruth.
- Sunshine Landscape Construction Ltd2020
- Varcurn Marble Limited2004
- 5 Star Maintenance (South West) Limited2005
- Abl Plastics Limited2012
- Home Ease Bathrooms Ltd2026
- Pyrocheck Ltd2019
All installation companies (insulation, lifts, shutters and similar) in Redruth · All trades in Redruth · Installers across the UK
Frequently asked questions
When are Southwest Insulating Limited's accounts due?
Southwest Insulating Limited's next accounts are due at Companies House by 30 April 2027 (in 199 days), covering the period to 31 July 2026.
When is Southwest Insulating Limited's CT600 due?
The CT600 for the period to 31 July 2026 is due at HMRC by 31 July 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 May 2027.
Is Southwest Insulating Limited still trading?
Southwest Insulating 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 Southwest Insulating Limited do?
Southwest Insulating Limited is registered under Other construction installation (SIC 43290).
How old is Southwest Insulating Limited?
Southwest Insulating Limited was incorporated on 24 July 2024, 2 years ago.
Who runs Southwest Insulating Limited?
Southwest Insulating Limited has 1 active director, the longest-serving appointed in Jul 2024. Their names and service addresses are on the Companies House register.
Who owns Southwest Insulating Limited?
One person or company has significant control of Southwest Insulating Limited: an individual (owns 75% or more of the shares).
What is the penalty if Southwest Insulating 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 Southwest Insulating 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.