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Company profile · Installers
Insideout Improvements Ltd
Insideout Improvements Ltd is a 2-year-old private limited company registered in Swindon, company number 15910987, one of 72 installation companies (insulation, lifts, shutters and similar) in Swindon. Its next accounts are due at Companies House on 31 May 2027, and the CT600 for the period to 31 August 2026 is due at HMRC on 31 August 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 August 2025, as filed at Companies House.
Where Insideout Improvements Ltd is registered
The registered office is in Swindon (SN25), in the Swindon local authority area, South West. Show SN25 4ZP on a map.
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What happens if Insideout Improvements 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 31 May 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jun 2027 to 30 Jun 2027 | £150 |
| 1 to 3 months late | 1 Jul 2027 to 31 Aug 2027 | £375 |
| 3 to 6 months late | 1 Sep 2027 to 30 Nov 2027 | £750 |
| More than 6 months late | From 1 Dec 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2027 | £200 |
| 3 months late | 30 Nov 2027 | another £200 |
| 6 months late | 29 Feb 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 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
- 15910987
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 21 August 2024 (2 years ago)
- Registered office
- 32 Wynwards Road, Swindon, SN25 4ZP
- Nature of business
- Other construction installation (SIC 43290)
Glazing (SIC 43342) - Year end
- 31 August (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 August 2025
- Last confirmation statement
- 20 August 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 Swindon
Other active installation companies (insulation, lifts, shutters and similar) registered in Swindon.
- J S Concepts Limited2019
- JD UK Group Limited2017
- K.J. Crawford Limited2010
- KG Carpentry & Joinery Ltd2022
- LB Ducting Services Limited2012
- Linroc Limited2014
- Lukas 2 Lukas Limited2018
- Maxdany Ltd2020
All installation companies (insulation, lifts, shutters and similar) in Swindon · All trades in Swindon · Installers across the UK
Frequently asked questions
When are Insideout Improvements Ltd's accounts due?
Insideout Improvements Ltd's next accounts are due at Companies House by 31 May 2027 (in 231 days), covering the period to 31 August 2026.
When is Insideout Improvements Ltd's CT600 due?
The CT600 for the period to 31 August 2026 is due at HMRC by 31 August 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 June 2027.
Is Insideout Improvements Ltd still trading?
Insideout Improvements 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 Insideout Improvements Ltd do?
Insideout Improvements Ltd is registered under Other construction installation (SIC 43290); Glazing (SIC 43342).
How old is Insideout Improvements Ltd?
Insideout Improvements Ltd was incorporated on 21 August 2024, 2 years ago.
What is the penalty if Insideout Improvements 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 Insideout Improvements 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.