- Companies
- Installers
- Chelmsford
- Kaizen Si Limited
Kaizen Si Limited
- Company number
- 15651553
- Incorporated
- 16 Apr 20242 years trading
- Registered office
- 1 Mearns Place, Chelmsford, CM2 6TT
- Nature of business
- Other construction installation; Regulation of and contribution to more efficient operation of businesses
Kaizen Si Limited is a 2-year-old private limited company registered in Chelmsford, company number 15651553, one of 89 installation companies (insulation, lifts, shutters and similar) in Chelmsford. Its next accounts are due at Companies House on 31 January 2027, and the CT600 for the period to 30 April 2026 is due at HMRC on 30 April 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 April 2025, as filed at Companies House. Negative net assets mean the company owed more than it owned at that date.
Where Kaizen Si Limited is registered
The registered office is in Chelmsford (CM2), in the Chelmsford local authority area, East of England. Show CM2 6TT on a map.
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What happens if Kaizen Si 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 31 January 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Feb 2027 to 28 Feb 2027 | £150 |
| 1 to 3 months late | 1 Mar 2027 to 30 Apr 2027 | £375 |
| 3 to 6 months late | 1 May 2027 to 31 Jul 2027 | £750 |
| More than 6 months late | From 1 Aug 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 May 2027 | £200 |
| 3 months late | 30 Jul 2027 | another £200 |
| 6 months late | 30 Oct 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Apr 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
- 15651553
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 16 April 2024 (2 years ago)
- Registered office
- 1 Mearns Place, Chelmsford, CM2 6TT
- Nature of business
- Other construction installation (SIC 43290)
Regulation of and contribution to more efficient operation of businesses (SIC 84130) - Year end
- 30 April (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 April 2025
- Last confirmation statement
- 8 April 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 Chelmsford
Other active installation companies (insulation, lifts, shutters and similar) registered in Chelmsford.
- Karmel Builders Limited2014
- KDK Fire Protection Ltd2019
- Kestrel Maintenance Limited2009
- KT&Mja Solar Ltd2023
- LCM Modular Limited2012
- London Washrooms Limited2023
- Lorise Trading Limited2025
- LR Interiors Essex Limited2023
All installation companies (insulation, lifts, shutters and similar) in Chelmsford · All trades in Chelmsford · Installers across the UK
Frequently asked questions
When are Kaizen Si Limited's accounts due?
Kaizen Si Limited's next accounts are due at Companies House by 31 January 2027 (in 111 days), covering the period to 30 April 2026.
When is Kaizen Si Limited's CT600 due?
The CT600 for the period to 30 April 2026 is due at HMRC by 30 April 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 February 2027.
Is Kaizen Si Limited still trading?
Kaizen Si 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 Kaizen Si Limited do?
Kaizen Si Limited is registered under Other construction installation (SIC 43290); Regulation of and contribution to more efficient operation of businesses (SIC 84130).
How old is Kaizen Si Limited?
Kaizen Si Limited was incorporated on 16 April 2024, 2 years ago.
What is the penalty if Kaizen Si 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 Kaizen Si 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.